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< section id = "forecast-model-vertical-sounding" >
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< h1 > Forecast Model Vertical Sounding< a class = "headerlink" href = "#forecast-model-vertical-sounding" title = "Permalink to this heading" > < / a > < / h1 >
2024-09-18 19:24:29 +00:00
< p > < a class = "reference external" href = "http://nbviewer.ipython.org/github/Unidata/python-awips/blob/master/examples/notebooks/Forecast_Model_Vertical_Sounding.ipynb" > Notebook< / a >
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Python-AWIPS Tutorial Notebook< / p >
< hr class = "docutils" / >
< section id = "objectives" >
< h2 > Objectives< a class = "headerlink" href = "#objectives" title = "Permalink to this heading" > < / a > < / h2 >
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< ul class = "simple" >
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< li > < p > Use python-awips to connect to an edex server< / p > < / li >
< li > < p > Request data using the < a class = "reference external" href = "http://unidata.github.io/python-awips/api/ModelSounding.html" > ModelSounding
class< / a >
in addition to using the normal < a class = "reference external" href = "http://unidata.github.io/python-awips/api/DataAccessLayer.html" > DataAccess
class< / a > < / p > < / li >
< li > < p > Create and compare vertical sounding from different AWIPS model data
with isobaric levels< / p > < / li >
< li > < p > Use < a class = "reference external" href = "https://shapely.readthedocs.io/en/stable/reference/shapely.Point.html" > Shapely Point
geometry< / a >
to define a point< / p > < / li >
< li > < p > Convert between units when necessary< / p > < / li >
< li > < p > Use MetPy to create
< a class = "reference external" href = "https://unidata.github.io/MetPy/latest/api/generated/metpy.plots.SkewT.html" > SkewT< / a >
and
< a class = "reference external" href = "https://unidata.github.io/MetPy/latest/api/generated/metpy.plots.Hodograph.html" > Hodograph< / a >
plots< / p > < / li >
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< / ul >
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< hr class = "docutils" / >
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< section id = "table-of-contents" >
< h3 > Table of Contents< a class = "headerlink" href = "#table-of-contents" title = "Permalink to this heading" > < / a > < / h3 >
< div class = "line-block" >
< div class = "line" > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html#imports" > 1
Imports< / a > < / div >
< div class = "line" > < a class = "reference external" href = "http://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html#edex-connection" > 2 EDEX
Connection< / a > < / div >
< div class = "line" > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html#define-useful-variables" > 3 Define Useful
Variables< / a > < / div >
< div class = "line" > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html#function-get-surface-data" > 4 Function:
get_surface_data()< / a > < / div >
< div class = "line" > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html#function-get-levels-data" > 5 Function:
get_levels_data()< / a > < / div >
< div class = "line" > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html#function-plot-skewt" > 6 Function:
plot_skewT()< / a > < / div >
< div class = "line" > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html#retrieve-necessary-plotting-data" > 7 Retrieve Necessary Plotting
Data< / a > < / div >
< div class = "line" > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html#skew-t-log-p" > 8
Skew-T/Log-P< / a > < / div >
< div class = "line" > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html#model-sounding-comparison" > 9 Model Sounding
Comparison< / a > < / div >
< div class = "line" > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html#see-also" > 10 See
Also< / a > < / div >
< div class = "line" > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html#related-notebooks" > 10.1 Related
Notebooks< / a > < / div >
< div class = "line" > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html#additional-documentation" > 10.2 Additional
Documentation< / a > < / div >
< / div >
< / section >
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< section id = "imports" >
< h3 > 1 Imports< a class = "headerlink" href = "#imports" title = "Permalink to this heading" > < / a > < / h3 >
< p > The imports below are used throughout the notebook. Note the first
import is coming directly from python-awips and allows us to connect to
an EDEX server. The subsequent imports are for data manipulation and
visualization.< / p >
< div class = "highlight-ipython3 notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "kn" > from< / span > < span class = "nn" > awips.dataaccess< / span > < span class = "kn" > import< / span > < span class = "n" > DataAccessLayer< / span > < span class = "p" > ,< / span > < span class = "n" > ModelSounding< / span >
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< span class = "kn" > import< / span > < span class = "nn" > matplotlib.pyplot< / span > < span class = "k" > as< / span > < span class = "nn" > plt< / span >
< span class = "kn" > import< / span > < span class = "nn" > numpy< / span > < span class = "k" > as< / span > < span class = "nn" > np< / span >
< span class = "kn" > from< / span > < span class = "nn" > metpy.plots< / span > < span class = "kn" > import< / span > < span class = "n" > SkewT< / span > < span class = "p" > ,< / span > < span class = "n" > Hodograph< / span >
< span class = "kn" > from< / span > < span class = "nn" > metpy.units< / span > < span class = "kn" > import< / span > < span class = "n" > units< / span >
< span class = "kn" > from< / span > < span class = "nn" > mpl_toolkits.axes_grid1.inset_locator< / span > < span class = "kn" > import< / span > < span class = "n" > inset_axes< / span >
< span class = "kn" > from< / span > < span class = "nn" > math< / span > < span class = "kn" > import< / span > < span class = "n" > sqrt< / span >
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< span class = "kn" > from< / span > < span class = "nn" > shapely.geometry< / span > < span class = "kn" > import< / span > < span class = "n" > Point< / span >
< / pre > < / div >
< / div >
< p > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html" > Top< / a > < / p >
< / section >
< hr class = "docutils" / >
< section id = "edex-connection" >
< h3 > 2 EDEX Connection< a class = "headerlink" href = "#edex-connection" title = "Permalink to this heading" > < / a > < / h3 >
< p > First we establish a connection to Unidata’
sets the proper server on the < strong > DataAccessLayer< / strong > , which we will use
numerous times throughout the notebook.< / p >
< div class = "highlight-ipython3 notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > server< / span > < span class = "o" > =< / span > < span class = "s1" > ' edex-cloud.unidata.ucar.edu' < / span >
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< span class = "n" > DataAccessLayer< / span > < span class = "o" > .< / span > < span class = "n" > changeEDEXHost< / span > < span class = "p" > (< / span > < span class = "n" > server< / span > < span class = "p" > )< / span >
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< / pre > < / div >
< / div >
< p > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html" > Top< / a > < / p >
< / section >
< hr class = "docutils" / >
< section id = "define-useful-variables" >
< h3 > 3 Define Useful Variables< a class = "headerlink" href = "#define-useful-variables" title = "Permalink to this heading" > < / a > < / h3 >
< p > The plotting in this notebook needs a model name, a location point
(defined by latitude and longitude), and the most recent time range with
the initial forecast run.< / p >
< div class = "highlight-ipython3 notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "c1" > # Note the order is Lon,Lat and not Lat,Lon< / span >
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< span class = "n" > point< / span > < span class = "o" > =< / span > < span class = "n" > Point< / span > < span class = "p" > (< / span > < span class = "o" > -< / span > < span class = "mf" > 104.67< / span > < span class = "p" > ,< / span > < span class = "mf" > 39.87< / span > < span class = "p" > )< / span >
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< span class = "n" > model< / span > < span class = "o" > =< / span > < span class = "s2" > " NAM40" < / span >
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< span class = "c1" > # Get latest forecast cycle run< / span >
< span class = "n" > timeReq< / span > < span class = "o" > =< / span > < span class = "n" > DataAccessLayer< / span > < span class = "o" > .< / span > < span class = "n" > newDataRequest< / span > < span class = "p" > (< / span > < span class = "s2" > " grid" < / span > < span class = "p" > )< / span >
< span class = "n" > timeReq< / span > < span class = "o" > .< / span > < span class = "n" > setLocationNames< / span > < span class = "p" > (< / span > < span class = "n" > model< / span > < span class = "p" > )< / span >
< span class = "n" > cycles< / span > < span class = "o" > =< / span > < span class = "n" > DataAccessLayer< / span > < span class = "o" > .< / span > < span class = "n" > getAvailableTimes< / span > < span class = "p" > (< / span > < span class = "n" > timeReq< / span > < span class = "p" > ,< / span > < span class = "kc" > True< / span > < span class = "p" > )< / span >
< span class = "n" > times< / span > < span class = "o" > =< / span > < span class = "n" > DataAccessLayer< / span > < span class = "o" > .< / span > < span class = "n" > getAvailableTimes< / span > < span class = "p" > (< / span > < span class = "n" > timeReq< / span > < span class = "p" > )< / span >
< span class = "n" > fcstRun< / span > < span class = "o" > =< / span > < span class = "n" > DataAccessLayer< / span > < span class = "o" > .< / span > < span class = "n" > getForecastRun< / span > < span class = "p" > (< / span > < span class = "n" > cycles< / span > < span class = "p" > [< / span > < span class = "o" > -< / span > < span class = "mi" > 2< / span > < span class = "p" > ],< / span > < span class = "n" > times< / span > < span class = "p" > )< / span >
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< span class = "n" > timeRange< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "n" > fcstRun< / span > < span class = "p" > [< / span > < span class = "mi" > 0< / span > < span class = "p" > ]]< / span >
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< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "s2" > " Using " < / span > < span class = "o" > +< / span > < span class = "n" > model< / span > < span class = "o" > +< / span > < span class = "s2" > " forecast time " < / span > < span class = "o" > +< / span > < span class = "nb" > str< / span > < span class = "p" > (< / span > < span class = "n" > timeRange< / span > < span class = "p" > ))< / span >
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< / pre > < / div >
< / div >
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< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > Using< / span > < span class = "n" > NAM40< / span > < span class = "n" > forecast< / span > < span class = "n" > time< / span > < span class = "p" > [< / span > < span class = "o" > < < / span > < span class = "n" > DataTime< / span > < span class = "n" > instance< / span > < span class = "p" > :< / span > < span class = "mi" > 2023< / span > < span class = "o" > -< / span > < span class = "mi" > 07< / span > < span class = "o" > -< / span > < span class = "mi" > 25< / span > < span class = "mi" > 12< / span > < span class = "p" > :< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 00< / span > < span class = "o" > > < / span > < span class = "p" > ]< / span >
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< / pre > < / div >
< / div >
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< p > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html" > Top< / a > < / p >
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< / section >
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< hr class = "docutils" / >
< section id = "function-get-surface-data" >
< h3 > 4 Function: get_surface_data()< a class = "headerlink" href = "#function-get-surface-data" title = "Permalink to this heading" > < / a > < / h3 >
< p > This function is used to get the initial forecast model data for surface
height. This is done separately from the rest of the heights to
determine the surface pressure. It uses the
< a class = "reference external" href = "http://unidata.github.io/python-awips/api/ModelSounding.html" > ModelSounding< / a >
data object from python-awips to retrieve all the relevant information.< / p >
< p > This function takes the model name, location, and time as attributes,
and returns arrays for pressure, temperature, dewpoint, and the u and v
wind components.< / p >
< div class = "highlight-ipython3 notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "k" > def< / span > < span class = "nf" > get_surface_data< / span > < span class = "p" > (< / span > < span class = "n" > modelName< / span > < span class = "p" > ,< / span > < span class = "n" > location< / span > < span class = "p" > ,< / span > < span class = "n" > time< / span > < span class = "p" > ):< / span >
< span class = "w" > < / span > < span class = "sd" > " " " model name, location, and timeRange desire " " " < / span >
< span class = "c1" > # request data and sort response< / span >
< span class = "n" > pressure< / span > < span class = "p" > ,< / span > < span class = "n" > temp< / span > < span class = "p" > ,< / span > < span class = "n" > dpt< / span > < span class = "p" > ,< / span > < span class = "n" > ucomp< / span > < span class = "p" > ,< / span > < span class = "n" > vcomp< / span > < span class = "o" > =< / span > < span class = "p" > [],[],[],[],[]< / span >
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< span class = "n" > use_parms< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "s1" > ' T' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' DpT' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' uW' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' vW' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' P' < / span > < span class = "p" > ]< / span >
< span class = "n" > use_level< / span > < span class = "o" > =< / span > < span class = "s2" > " 0.0FHAG" < / span >
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< span class = "n" > sndObject< / span > < span class = "o" > =< / span > < span class = "n" > ModelSounding< / span > < span class = "o" > .< / span > < span class = "n" > getSounding< / span > < span class = "p" > (< / span > < span class = "n" > modelName< / span > < span class = "p" > ,< / span > < span class = "n" > use_parms< / span > < span class = "p" > ,< / span > < span class = "p" > [< / span > < span class = "n" > use_level< / span > < span class = "p" > ],< / span > < span class = "n" > location< / span > < span class = "p" > ,< / span > < span class = "n" > time< / span > < span class = "p" > )< / span >
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< span class = "k" > if< / span > < span class = "nb" > len< / span > < span class = "p" > (< / span > < span class = "n" > sndObject< / span > < span class = "p" > )< / span > < span class = "o" > > < / span > < span class = "mi" > 0< / span > < span class = "p" > :< / span >
< span class = "k" > for< / span > < span class = "n" > time< / span > < span class = "ow" > in< / span > < span class = "n" > sndObject< / span > < span class = "o" > .< / span > < span class = "n" > _dataDict< / span > < span class = "p" > :< / span >
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< span class = "n" > pressure< / span > < span class = "o" > .< / span > < span class = "n" > append< / span > < span class = "p" > (< / span > < span class = "nb" > float< / span > < span class = "p" > (< / span > < span class = "n" > sndObject< / span > < span class = "o" > .< / span > < span class = "n" > _dataDict< / span > < span class = "p" > [< / span > < span class = "n" > time< / span > < span class = "p" > ][< / span > < span class = "n" > use_level< / span > < span class = "p" > ][< / span > < span class = "s1" > ' P' < / span > < span class = "p" > ]))< / span >
< span class = "n" > temp< / span > < span class = "o" > .< / span > < span class = "n" > append< / span > < span class = "p" > (< / span > < span class = "nb" > float< / span > < span class = "p" > (< / span > < span class = "n" > sndObject< / span > < span class = "o" > .< / span > < span class = "n" > _dataDict< / span > < span class = "p" > [< / span > < span class = "n" > time< / span > < span class = "p" > ][< / span > < span class = "n" > use_level< / span > < span class = "p" > ][< / span > < span class = "s1" > ' T' < / span > < span class = "p" > ]))< / span >
< span class = "n" > dpt< / span > < span class = "o" > .< / span > < span class = "n" > append< / span > < span class = "p" > (< / span > < span class = "nb" > float< / span > < span class = "p" > (< / span > < span class = "n" > sndObject< / span > < span class = "o" > .< / span > < span class = "n" > _dataDict< / span > < span class = "p" > [< / span > < span class = "n" > time< / span > < span class = "p" > ][< / span > < span class = "n" > use_level< / span > < span class = "p" > ][< / span > < span class = "s1" > ' DpT' < / span > < span class = "p" > ]))< / span >
< span class = "n" > ucomp< / span > < span class = "o" > .< / span > < span class = "n" > append< / span > < span class = "p" > (< / span > < span class = "nb" > float< / span > < span class = "p" > (< / span > < span class = "n" > sndObject< / span > < span class = "o" > .< / span > < span class = "n" > _dataDict< / span > < span class = "p" > [< / span > < span class = "n" > time< / span > < span class = "p" > ][< / span > < span class = "n" > use_level< / span > < span class = "p" > ][< / span > < span class = "s1" > ' uW' < / span > < span class = "p" > ]))< / span >
< span class = "n" > vcomp< / span > < span class = "o" > .< / span > < span class = "n" > append< / span > < span class = "p" > (< / span > < span class = "nb" > float< / span > < span class = "p" > (< / span > < span class = "n" > sndObject< / span > < span class = "o" > .< / span > < span class = "n" > _dataDict< / span > < span class = "p" > [< / span > < span class = "n" > time< / span > < span class = "p" > ][< / span > < span class = "n" > use_level< / span > < span class = "p" > ][< / span > < span class = "s1" > ' vW' < / span > < span class = "p" > ]))< / span >
< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "s2" > " Found surface record at " < / span > < span class = "o" > +< / span > < span class = "s2" > " < / span > < span class = "si" > %.1f< / span > < span class = "s2" > " < / span > < span class = "o" > %< / span > < span class = "n" > pressure< / span > < span class = "p" > [< / span > < span class = "mi" > 0< / span > < span class = "p" > ]< / span > < span class = "o" > +< / span > < span class = "s2" > " MB" < / span > < span class = "p" > )< / span >
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< span class = "k" > else< / span > < span class = "p" > :< / span >
< span class = "k" > raise< / span > < span class = "ne" > ValueError< / span > < span class = "p" > (< / span > < span class = "s2" > " sndObject returned empty for query [" < / span >
< span class = "o" > +< / span > < span class = "s1" > ' , ' < / span > < span class = "o" > .< / span > < span class = "n" > join< / span > < span class = "p" > (< / span > < span class = "nb" > str< / span > < span class = "p" > (< / span > < span class = "n" > x< / span > < span class = "p" > )< / span > < span class = "k" > for< / span > < span class = "n" > x< / span > < span class = "ow" > in< / span > < span class = "p" > (< / span > < span class = "n" > modelName< / span > < span class = "p" > ,< / span > < span class = "n" > use_parms< / span > < span class = "p" > ,< / span > < span class = "n" > point< / span > < span class = "p" > ,< / span > < span class = "n" > use_level< / span > < span class = "p" > ))< / span > < span class = "o" > +< / span > < span class = "s2" > " ]" < / span > < span class = "p" > )< / span >
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< span class = "c1" > # return information for plotting< / span >
< span class = "k" > return< / span > < span class = "n" > pressure< / span > < span class = "p" > ,< / span > < span class = "n" > temp< / span > < span class = "p" > ,< / span > < span class = "n" > dpt< / span > < span class = "p" > ,< / span > < span class = "n" > ucomp< / span > < span class = "p" > ,< / span > < span class = "n" > vcomp< / span >
< / pre > < / div >
< / div >
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< p > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html" > Top< / a > < / p >
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< / section >
< hr class = "docutils" / >
< section id = "function-get-levels-data" >
< h3 > 5 Function: get_levels_data()< a class = "headerlink" href = "#function-get-levels-data" title = "Permalink to this heading" > < / a > < / h3 >
< p > This function is similar to < em > get_surface_data()< / em > , except it gets data
values for presure heights above the surface. It uses the
< a class = "reference external" href = "http://unidata.github.io/python-awips/api/ModelSounding.html" > ModelSounding< / a >
data object from python-awips to retrieve all the relevant information.< / p >
< p > It takes the model name, location, and time (similar to the other
function), and also takes the instantiated pressure, temperature,
dewpoint, and wind vector arrays.< / p >
< p > It returns the fully populated pressure, temperature, dewpoint,
u-component, v-component, and computed wind arrays.< / p >
< div class = "highlight-ipython3 notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "k" > def< / span > < span class = "nf" > get_levels_data< / span > < span class = "p" > (< / span > < span class = "n" > modelName< / span > < span class = "p" > ,< / span > < span class = "n" > location< / span > < span class = "p" > ,< / span > < span class = "n" > time< / span > < span class = "p" > ,< / span > < span class = "n" > pressure< / span > < span class = "p" > ,< / span > < span class = "n" > temp< / span > < span class = "p" > ,< / span > < span class = "n" > dpt< / span > < span class = "p" > ,< / span > < span class = "n" > ucomp< / span > < span class = "p" > ,< / span > < span class = "n" > vcomp< / span > < span class = "p" > ):< / span >
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< span class = "c1" > # Get isobaric levels with our requested parameters< / span >
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< span class = "n" > parms< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "s1" > ' T' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' DpT' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' uW' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' vW' < / span > < span class = "p" > ]< / span >
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< span class = "n" > levelReq< / span > < span class = "o" > =< / span > < span class = "n" > DataAccessLayer< / span > < span class = "o" > .< / span > < span class = "n" > newDataRequest< / span > < span class = "p" > (< / span > < span class = "s2" > " grid" < / span > < span class = "p" > ,< / span > < span class = "n" > envelope< / span > < span class = "o" > =< / span > < span class = "n" > point< / span > < span class = "p" > )< / span >
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< span class = "n" > levelReq< / span > < span class = "o" > .< / span > < span class = "n" > setLocationNames< / span > < span class = "p" > (< / span > < span class = "n" > model< / span > < span class = "p" > )< / span >
< span class = "n" > levelReq< / span > < span class = "o" > .< / span > < span class = "n" > setParameters< / span > < span class = "p" > (< / span > < span class = "o" > *< / span > < span class = "p" > (< / span > < span class = "n" > parms< / span > < span class = "p" > ))< / span >
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< span class = "n" > availableLevels< / span > < span class = "o" > =< / span > < span class = "n" > DataAccessLayer< / span > < span class = "o" > .< / span > < span class = "n" > getAvailableLevels< / span > < span class = "p" > (< / span > < span class = "n" > levelReq< / span > < span class = "p" > )< / span >
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< span class = "c1" > # Clean levels list of unit string (MB, FHAG, etc.)< / span >
< span class = "n" > levels< / span > < span class = "o" > =< / span > < span class = "p" > []< / span >
< span class = "k" > for< / span > < span class = "n" > lvl< / span > < span class = "ow" > in< / span > < span class = "n" > availableLevels< / span > < span class = "p" > :< / span >
< span class = "n" > name< / span > < span class = "o" > =< / span > < span class = "nb" > str< / span > < span class = "p" > (< / span > < span class = "n" > lvl< / span > < span class = "p" > )< / span >
< span class = "k" > if< / span > < span class = "s1" > ' MB' < / span > < span class = "ow" > in< / span > < span class = "n" > name< / span > < span class = "ow" > and< / span > < span class = "s1" > ' _' < / span > < span class = "ow" > not< / span > < span class = "ow" > in< / span > < span class = "n" > name< / span > < span class = "p" > :< / span >
< span class = "c1" > # If this level is above (less than in mb) our 0.0FHAG record< / span >
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< span class = "k" > if< / span > < span class = "nb" > float< / span > < span class = "p" > (< / span > < span class = "n" > name< / span > < span class = "o" > .< / span > < span class = "n" > replace< / span > < span class = "p" > (< / span > < span class = "s1" > ' MB' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' ' < / span > < span class = "p" > ))< / span > < span class = "o" > < < / span > < span class = "n" > pressure< / span > < span class = "p" > [< / span > < span class = "mi" > 0< / span > < span class = "p" > ]:< / span >
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< span class = "n" > levels< / span > < span class = "o" > .< / span > < span class = "n" > append< / span > < span class = "p" > (< / span > < span class = "n" > lvl< / span > < span class = "p" > )< / span >
< span class = "c1" > # Get Sounding< / span >
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< span class = "n" > sndObject< / span > < span class = "o" > =< / span > < span class = "n" > ModelSounding< / span > < span class = "o" > .< / span > < span class = "n" > getSounding< / span > < span class = "p" > (< / span > < span class = "n" > modelName< / span > < span class = "p" > ,< / span > < span class = "n" > parms< / span > < span class = "p" > ,< / span > < span class = "n" > levels< / span > < span class = "p" > ,< / span > < span class = "n" > location< / span > < span class = "p" > ,< / span > < span class = "n" > time< / span > < span class = "p" > )< / span >
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< span class = "k" > if< / span > < span class = "ow" > not< / span > < span class = "nb" > len< / span > < span class = "p" > (< / span > < span class = "n" > sndObject< / span > < span class = "p" > )< / span > < span class = "o" > > < / span > < span class = "mi" > 0< / span > < span class = "p" > :< / span >
< span class = "k" > raise< / span > < span class = "ne" > ValueError< / span > < span class = "p" > (< / span > < span class = "s2" > " sndObject returned empty for query [" < / span >
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< span class = "o" > +< / span > < span class = "s1" > ' , ' < / span > < span class = "o" > .< / span > < span class = "n" > join< / span > < span class = "p" > (< / span > < span class = "nb" > str< / span > < span class = "p" > (< / span > < span class = "n" > x< / span > < span class = "p" > )< / span > < span class = "k" > for< / span > < span class = "n" > x< / span > < span class = "ow" > in< / span > < span class = "p" > (< / span > < span class = "n" > model< / span > < span class = "p" > ,< / span > < span class = "n" > parms< / span > < span class = "p" > ,< / span > < span class = "n" > point< / span > < span class = "p" > ,< / span > < span class = "n" > levels< / span > < span class = "p" > ))< / span > < span class = "o" > +< / span > < span class = "s2" > " ]" < / span > < span class = "p" > )< / span >
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< span class = "k" > for< / span > < span class = "n" > time< / span > < span class = "ow" > in< / span > < span class = "n" > sndObject< / span > < span class = "o" > .< / span > < span class = "n" > _dataDict< / span > < span class = "p" > :< / span >
< span class = "k" > for< / span > < span class = "n" > lvl< / span > < span class = "ow" > in< / span > < span class = "n" > sndObject< / span > < span class = "o" > .< / span > < span class = "n" > _dataDict< / span > < span class = "p" > [< / span > < span class = "n" > time< / span > < span class = "p" > ]< / span > < span class = "o" > .< / span > < span class = "n" > levels< / span > < span class = "p" > ():< / span >
< span class = "k" > for< / span > < span class = "n" > parm< / span > < span class = "ow" > in< / span > < span class = "n" > sndObject< / span > < span class = "o" > .< / span > < span class = "n" > _dataDict< / span > < span class = "p" > [< / span > < span class = "n" > time< / span > < span class = "p" > ][< / span > < span class = "n" > lvl< / span > < span class = "p" > ]< / span > < span class = "o" > .< / span > < span class = "n" > parameters< / span > < span class = "p" > ():< / span >
< span class = "k" > if< / span > < span class = "n" > parm< / span > < span class = "o" > ==< / span > < span class = "s2" > " T" < / span > < span class = "p" > :< / span >
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< span class = "n" > temp< / span > < span class = "o" > .< / span > < span class = "n" > append< / span > < span class = "p" > (< / span > < span class = "nb" > float< / span > < span class = "p" > (< / span > < span class = "n" > sndObject< / span > < span class = "o" > .< / span > < span class = "n" > _dataDict< / span > < span class = "p" > [< / span > < span class = "n" > time< / span > < span class = "p" > ][< / span > < span class = "n" > lvl< / span > < span class = "p" > ][< / span > < span class = "n" > parm< / span > < span class = "p" > ]))< / span >
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< span class = "k" > elif< / span > < span class = "n" > parm< / span > < span class = "o" > ==< / span > < span class = "s2" > " DpT" < / span > < span class = "p" > :< / span >
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< span class = "n" > dpt< / span > < span class = "o" > .< / span > < span class = "n" > append< / span > < span class = "p" > (< / span > < span class = "nb" > float< / span > < span class = "p" > (< / span > < span class = "n" > sndObject< / span > < span class = "o" > .< / span > < span class = "n" > _dataDict< / span > < span class = "p" > [< / span > < span class = "n" > time< / span > < span class = "p" > ][< / span > < span class = "n" > lvl< / span > < span class = "p" > ][< / span > < span class = "n" > parm< / span > < span class = "p" > ]))< / span >
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< span class = "k" > elif< / span > < span class = "n" > parm< / span > < span class = "o" > ==< / span > < span class = "s1" > ' uW' < / span > < span class = "p" > :< / span >
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< span class = "n" > ucomp< / span > < span class = "o" > .< / span > < span class = "n" > append< / span > < span class = "p" > (< / span > < span class = "nb" > float< / span > < span class = "p" > (< / span > < span class = "n" > sndObject< / span > < span class = "o" > .< / span > < span class = "n" > _dataDict< / span > < span class = "p" > [< / span > < span class = "n" > time< / span > < span class = "p" > ][< / span > < span class = "n" > lvl< / span > < span class = "p" > ][< / span > < span class = "n" > parm< / span > < span class = "p" > ]))< / span >
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< span class = "k" > elif< / span > < span class = "n" > parm< / span > < span class = "o" > ==< / span > < span class = "s1" > ' vW' < / span > < span class = "p" > :< / span >
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< span class = "n" > vcomp< / span > < span class = "o" > .< / span > < span class = "n" > append< / span > < span class = "p" > (< / span > < span class = "nb" > float< / span > < span class = "p" > (< / span > < span class = "n" > sndObject< / span > < span class = "o" > .< / span > < span class = "n" > _dataDict< / span > < span class = "p" > [< / span > < span class = "n" > time< / span > < span class = "p" > ][< / span > < span class = "n" > lvl< / span > < span class = "p" > ][< / span > < span class = "n" > parm< / span > < span class = "p" > ]))< / span >
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< span class = "k" > else< / span > < span class = "p" > :< / span >
< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "s2" > " WHAT IS THIS" < / span > < span class = "p" > )< / span >
< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "n" > sndObject< / span > < span class = "o" > .< / span > < span class = "n" > _dataDict< / span > < span class = "p" > [< / span > < span class = "n" > time< / span > < span class = "p" > ][< / span > < span class = "n" > lvl< / span > < span class = "p" > ][< / span > < span class = "n" > parm< / span > < span class = "p" > ])< / span >
< span class = "c1" > # Pressure is our requested level rather than a returned parameter< / span >
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< span class = "n" > pressure< / span > < span class = "o" > .< / span > < span class = "n" > append< / span > < span class = "p" > (< / span > < span class = "nb" > float< / span > < span class = "p" > (< / span > < span class = "n" > lvl< / span > < span class = "o" > .< / span > < span class = "n" > replace< / span > < span class = "p" > (< / span > < span class = "s1" > ' MB' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' ' < / span > < span class = "p" > )))< / span >
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< span class = "c1" > # convert to numpy.array()< / span >
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< span class = "n" > pressure< / span > < span class = "o" > =< / span > < span class = "n" > np< / span > < span class = "o" > .< / span > < span class = "n" > array< / span > < span class = "p" > (< / span > < span class = "n" > pressure< / span > < span class = "p" > ,< / span > < span class = "n" > dtype< / span > < span class = "o" > =< / span > < span class = "nb" > float< / span > < span class = "p" > )< / span >
< span class = "n" > temp< / span > < span class = "o" > =< / span > < span class = "p" > (< / span > < span class = "n" > np< / span > < span class = "o" > .< / span > < span class = "n" > array< / span > < span class = "p" > (< / span > < span class = "n" > temp< / span > < span class = "p" > ,< / span > < span class = "n" > dtype< / span > < span class = "o" > =< / span > < span class = "nb" > float< / span > < span class = "p" > )< / span > < span class = "o" > -< / span > < span class = "mf" > 273.15< / span > < span class = "p" > )< / span > < span class = "o" > *< / span > < span class = "n" > units< / span > < span class = "o" > .< / span > < span class = "n" > degC< / span >
< span class = "n" > dpt< / span > < span class = "o" > =< / span > < span class = "p" > (< / span > < span class = "n" > np< / span > < span class = "o" > .< / span > < span class = "n" > array< / span > < span class = "p" > (< / span > < span class = "n" > dpt< / span > < span class = "p" > ,< / span > < span class = "n" > dtype< / span > < span class = "o" > =< / span > < span class = "nb" > float< / span > < span class = "p" > )< / span > < span class = "o" > -< / span > < span class = "mf" > 273.15< / span > < span class = "p" > )< / span > < span class = "o" > *< / span > < span class = "n" > units< / span > < span class = "o" > .< / span > < span class = "n" > degC< / span >
< span class = "n" > ucomp< / span > < span class = "o" > =< / span > < span class = "p" > (< / span > < span class = "n" > np< / span > < span class = "o" > .< / span > < span class = "n" > array< / span > < span class = "p" > (< / span > < span class = "n" > ucomp< / span > < span class = "p" > ,< / span > < span class = "n" > dtype< / span > < span class = "o" > =< / span > < span class = "nb" > float< / span > < span class = "p" > )< / span > < span class = "o" > *< / span > < span class = "n" > units< / span > < span class = "p" > (< / span > < span class = "s1" > ' m/s' < / span > < span class = "p" > ))< / span > < span class = "o" > .< / span > < span class = "n" > to< / span > < span class = "p" > (< / span > < span class = "s1" > ' knots' < / span > < span class = "p" > )< / span >
< span class = "n" > vcomp< / span > < span class = "o" > =< / span > < span class = "p" > (< / span > < span class = "n" > np< / span > < span class = "o" > .< / span > < span class = "n" > array< / span > < span class = "p" > (< / span > < span class = "n" > vcomp< / span > < span class = "p" > ,< / span > < span class = "n" > dtype< / span > < span class = "o" > =< / span > < span class = "nb" > float< / span > < span class = "p" > )< / span > < span class = "o" > *< / span > < span class = "n" > units< / span > < span class = "p" > (< / span > < span class = "s1" > ' m/s' < / span > < span class = "p" > ))< / span > < span class = "o" > .< / span > < span class = "n" > to< / span > < span class = "p" > (< / span > < span class = "s1" > ' knots' < / span > < span class = "p" > )< / span >
< span class = "n" > wind< / span > < span class = "o" > =< / span > < span class = "n" > np< / span > < span class = "o" > .< / span > < span class = "n" > sqrt< / span > < span class = "p" > (< / span > < span class = "n" > ucomp< / span > < span class = "o" > **< / span > < span class = "mi" > 2< / span > < span class = "o" > +< / span > < span class = "n" > vcomp< / span > < span class = "o" > **< / span > < span class = "mi" > 2< / span > < span class = "p" > )< / span >
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< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "s2" > " Using " < / span > < span class = "o" > +< / span > < span class = "nb" > str< / span > < span class = "p" > (< / span > < span class = "nb" > len< / span > < span class = "p" > (< / span > < span class = "n" > levels< / span > < span class = "p" > ))< / span > < span class = "o" > +< / span > < span class = "s2" > " levels between " < / span > < span class = "o" > +< / span >
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< span class = "nb" > str< / span > < span class = "p" > (< / span > < span class = "s2" > " < / span > < span class = "si" > %.1f< / span > < span class = "s2" > " < / span > < span class = "o" > %< / span > < span class = "nb" > max< / span > < span class = "p" > (< / span > < span class = "n" > pressure< / span > < span class = "p" > ))< / span > < span class = "o" > +< / span > < span class = "s2" > " and " < / span > < span class = "o" > +< / span > < span class = "nb" > str< / span > < span class = "p" > (< / span > < span class = "s2" > " < / span > < span class = "si" > %.1f< / span > < span class = "s2" > " < / span > < span class = "o" > %< / span > < span class = "nb" > min< / span > < span class = "p" > (< / span > < span class = "n" > pressure< / span > < span class = "p" > ))< / span > < span class = "o" > +< / span > < span class = "s2" > " MB" < / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "n" > pressure< / span > < span class = "p" > ,< / span > < span class = "n" > temp< / span > < span class = "p" > ,< / span > < span class = "n" > dpt< / span > < span class = "p" > ,< / span > < span class = "n" > ucomp< / span > < span class = "p" > ,< / span > < span class = "n" > vcomp< / span > < span class = "p" > ,< / span > < span class = "n" > wind< / span >
< / pre > < / div >
< / div >
< p > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html" > Top< / a > < / p >
< / section >
< hr class = "docutils" / >
< section id = "function-plot-skewt" >
< h3 > 6 Function: plot_skewT()< a class = "headerlink" href = "#function-plot-skewt" title = "Permalink to this heading" > < / a > < / h3 >
< p > Since we’
was used to create this function.< / p >
< p > The function takes the model name, reference time, and the pressure,
temperature, dewpoint, u-component, v-component, and wind arrays. It
plots a skewT and hodograph using metpy.< / p >
< div class = "highlight-ipython3 notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "k" > def< / span > < span class = "nf" > plot_skewT< / span > < span class = "p" > (< / span > < span class = "n" > modelName< / span > < span class = "p" > ,< / span > < span class = "n" > pressure< / span > < span class = "p" > ,< / span > < span class = "n" > temp< / span > < span class = "p" > ,< / span > < span class = "n" > dpt< / span > < span class = "p" > ,< / span > < span class = "n" > ucomp< / span > < span class = "p" > ,< / span > < span class = "n" > vcomp< / span > < span class = "p" > ,< / span > < span class = "n" > wind< / span > < span class = "p" > ,< / span > < span class = "n" > refTime< / span > < span class = "p" > ):< / span >
< span class = "n" > plt< / span > < span class = "o" > .< / span > < span class = "n" > rcParams< / span > < span class = "p" > [< / span > < span class = "s1" > ' figure.figsize' < / span > < span class = "p" > ]< / span > < span class = "o" > =< / span > < span class = "p" > (< / span > < span class = "mi" > 12< / span > < span class = "p" > ,< / span > < span class = "mi" > 14< / span > < span class = "p" > )< / span >
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< span class = "c1" > # Skew-T< / span >
< span class = "n" > skew< / span > < span class = "o" > =< / span > < span class = "n" > SkewT< / span > < span class = "p" > (< / span > < span class = "n" > rotation< / span > < span class = "o" > =< / span > < span class = "mi" > 45< / span > < span class = "p" > )< / span >
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< span class = "n" > skew< / span > < span class = "o" > .< / span > < span class = "n" > plot< / span > < span class = "p" > (< / span > < span class = "n" > pressure< / span > < span class = "p" > ,< / span > < span class = "n" > temp< / span > < span class = "p" > ,< / span > < span class = "s1" > ' r' < / span > < span class = "p" > ,< / span > < span class = "n" > linewidth< / span > < span class = "o" > =< / span > < span class = "mi" > 2< / span > < span class = "p" > )< / span >
< span class = "n" > skew< / span > < span class = "o" > .< / span > < span class = "n" > plot< / span > < span class = "p" > (< / span > < span class = "n" > pressure< / span > < span class = "p" > ,< / span > < span class = "n" > dpt< / span > < span class = "p" > ,< / span > < span class = "s1" > ' g' < / span > < span class = "p" > ,< / span > < span class = "n" > linewidth< / span > < span class = "o" > =< / span > < span class = "mi" > 2< / span > < span class = "p" > )< / span >
< span class = "n" > skew< / span > < span class = "o" > .< / span > < span class = "n" > plot_barbs< / span > < span class = "p" > (< / span > < span class = "n" > pressure< / span > < span class = "p" > ,< / span > < span class = "n" > ucomp< / span > < span class = "p" > ,< / span > < span class = "n" > vcomp< / span > < span class = "p" > )< / span >
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< span class = "n" > skew< / span > < span class = "o" > .< / span > < span class = "n" > plot_dry_adiabats< / span > < span class = "p" > ()< / span >
< span class = "n" > skew< / span > < span class = "o" > .< / span > < span class = "n" > plot_moist_adiabats< / span > < span class = "p" > ()< / span >
< span class = "n" > skew< / span > < span class = "o" > .< / span > < span class = "n" > plot_mixing_lines< / span > < span class = "p" > (< / span > < span class = "n" > linestyle< / span > < span class = "o" > =< / span > < span class = "s1" > ' :' < / span > < span class = "p" > )< / span >
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< span class = "n" > skew< / span > < span class = "o" > .< / span > < span class = "n" > ax< / span > < span class = "o" > .< / span > < span class = "n" > set_ylim< / span > < span class = "p" > (< / span > < span class = "mi" > 1000< / span > < span class = "p" > ,< / span > < span class = "n" > np< / span > < span class = "o" > .< / span > < span class = "n" > min< / span > < span class = "p" > (< / span > < span class = "n" > pressure< / span > < span class = "p" > ))< / span >
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< span class = "n" > skew< / span > < span class = "o" > .< / span > < span class = "n" > ax< / span > < span class = "o" > .< / span > < span class = "n" > set_xlim< / span > < span class = "p" > (< / span > < span class = "o" > -< / span > < span class = "mi" > 50< / span > < span class = "p" > ,< / span > < span class = "mi" > 40< / span > < span class = "p" > )< / span >
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< span class = "c1" > # Title< / span >
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< span class = "n" > plt< / span > < span class = "o" > .< / span > < span class = "n" > title< / span > < span class = "p" > (< / span > < span class = "n" > modelName< / span > < span class = "o" > +< / span > < span class = "s2" > " (" < / span > < span class = "o" > +< / span > < span class = "nb" > str< / span > < span class = "p" > (< / span > < span class = "n" > point< / span > < span class = "p" > )< / span > < span class = "o" > +< / span > < span class = "s2" > " ) " < / span > < span class = "o" > +< / span > < span class = "nb" > str< / span > < span class = "p" > (< / span > < span class = "n" > refTime< / span > < span class = "p" > ))< / span >
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< span class = "c1" > # Hodograph< / span >
< span class = "n" > ax_hod< / span > < span class = "o" > =< / span > < span class = "n" > inset_axes< / span > < span class = "p" > (< / span > < span class = "n" > skew< / span > < span class = "o" > .< / span > < span class = "n" > ax< / span > < span class = "p" > ,< / span > < span class = "s1" > ' 40%' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' 40%' < / span > < span class = "p" > ,< / span > < span class = "n" > loc< / span > < span class = "o" > =< / span > < span class = "mi" > 2< / span > < span class = "p" > )< / span >
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< span class = "n" > h< / span > < span class = "o" > =< / span > < span class = "n" > Hodograph< / span > < span class = "p" > (< / span > < span class = "n" > ax_hod< / span > < span class = "p" > ,< / span > < span class = "n" > component_range< / span > < span class = "o" > =< / span > < span class = "nb" > max< / span > < span class = "p" > (< / span > < span class = "n" > wind< / span > < span class = "o" > .< / span > < span class = "n" > magnitude< / span > < span class = "p" > ))< / span >
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< span class = "n" > h< / span > < span class = "o" > .< / span > < span class = "n" > add_grid< / span > < span class = "p" > (< / span > < span class = "n" > increment< / span > < span class = "o" > =< / span > < span class = "mi" > 20< / span > < span class = "p" > )< / span >
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< span class = "n" > h< / span > < span class = "o" > .< / span > < span class = "n" > plot_colormapped< / span > < span class = "p" > (< / span > < span class = "n" > ucomp< / span > < span class = "p" > ,< / span > < span class = "n" > vcomp< / span > < span class = "p" > ,< / span > < span class = "n" > wind< / span > < span class = "p" > )< / span >
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< span class = "c1" > # Dotted line at 0C isotherm< / span >
< span class = "n" > l< / span > < span class = "o" > =< / span > < span class = "n" > skew< / span > < span class = "o" > .< / span > < span class = "n" > ax< / span > < span class = "o" > .< / span > < span class = "n" > axvline< / span > < span class = "p" > (< / span > < span class = "mi" > 0< / span > < span class = "p" > ,< / span > < span class = "n" > color< / span > < span class = "o" > =< / span > < span class = "s1" > ' c' < / span > < span class = "p" > ,< / span > < span class = "n" > linestyle< / span > < span class = "o" > =< / span > < span class = "s1" > ' -' < / span > < span class = "p" > ,< / span > < span class = "n" > linewidth< / span > < span class = "o" > =< / span > < span class = "mi" > 1< / span > < span class = "p" > )< / span >
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< span class = "n" > plt< / span > < span class = "o" > .< / span > < span class = "n" > show< / span > < span class = "p" > ()< / span >
< / pre > < / div >
< / div >
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< p > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html" > Top< / a > < / p >
< / section >
< hr class = "docutils" / >
< section id = "retrieve-necessary-plotting-data" >
< h3 > 7 Retrieve Necessary Plotting Data< a class = "headerlink" href = "#retrieve-necessary-plotting-data" title = "Permalink to this heading" > < / a > < / h3 >
< p > First we get the initial data at surface level using the
get_surface_data function, and then pass those initial data arrays onto
the get_levels_data request to finish populating for additional heights
needed for Skew-T plots. We want to keep track of the pressure,
temeperature, dewpoint, u-component, v-component, and wind arrays so we
store them in variables to use later on.< / p >
< div class = "highlight-ipython3 notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > p< / span > < span class = "p" > ,< / span > < span class = "n" > t< / span > < span class = "p" > ,< / span > < span class = "n" > d< / span > < span class = "p" > ,< / span > < span class = "n" > u< / span > < span class = "p" > ,< / span > < span class = "n" > v< / span > < span class = "o" > =< / span > < span class = "n" > get_surface_data< / span > < span class = "p" > (< / span > < span class = "n" > model< / span > < span class = "p" > ,< / span > < span class = "n" > point< / span > < span class = "p" > ,< / span > < span class = "n" > timeRange< / span > < span class = "p" > )< / span >
< span class = "n" > p< / span > < span class = "p" > ,< / span > < span class = "n" > t< / span > < span class = "p" > ,< / span > < span class = "n" > d< / span > < span class = "p" > ,< / span > < span class = "n" > u< / span > < span class = "p" > ,< / span > < span class = "n" > v< / span > < span class = "p" > ,< / span > < span class = "n" > w< / span > < span class = "o" > =< / span > < span class = "n" > get_levels_data< / span > < span class = "p" > (< / span > < span class = "n" > model< / span > < span class = "p" > ,< / span > < span class = "n" > point< / span > < span class = "p" > ,< / span > < span class = "n" > timeRange< / span > < span class = "p" > ,< / span > < span class = "n" > p< / span > < span class = "p" > ,< / span > < span class = "n" > t< / span > < span class = "p" > ,< / span > < span class = "n" > d< / span > < span class = "p" > ,< / span > < span class = "n" > u< / span > < span class = "p" > ,< / span > < span class = "n" > v< / span > < span class = "p" > )< / span >
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< / pre > < / div >
< / div >
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< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > Found< / span > < span class = "n" > surface< / span > < span class = "n" > record< / span > < span class = "n" > at< / span > < span class = "mf" > 833.2< / span > < span class = "n" > MB< / span >
< span class = "n" > Using< / span > < span class = "mi" > 32< / span > < span class = "n" > levels< / span > < span class = "n" > between< / span > < span class = "mf" > 833.2< / span > < span class = "ow" > and< / span > < span class = "mf" > 50.0< / span > < span class = "n" > MB< / span >
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< / pre > < / div >
< / div >
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< p > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html" > Top< / a > < / p >
< / section >
< hr class = "docutils" / >
< section id = "skew-t-log-p" >
< h3 > 8 Skew-T/Log-P< a class = "headerlink" href = "#skew-t-log-p" title = "Permalink to this heading" > < / a > < / h3 >
< p > Here we use our plot_skewT function to generate our skewT & hodograph
charts for the data we retreived so far. This is where the pressure,
temperature, dewpoint, and wind data is needed.< / p >
< div class = "highlight-ipython3 notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > plot_skewT< / span > < span class = "p" > (< / span > < span class = "n" > model< / span > < span class = "p" > ,< / span > < span class = "n" > p< / span > < span class = "p" > ,< / span > < span class = "n" > t< / span > < span class = "p" > ,< / span > < span class = "n" > d< / span > < span class = "p" > ,< / span > < span class = "n" > u< / span > < span class = "p" > ,< / span > < span class = "n" > v< / span > < span class = "p" > ,< / span > < span class = "n" > w< / span > < span class = "p" > ,< / span > < span class = "n" > timeRange< / span > < span class = "p" > [< / span > < span class = "mi" > 0< / span > < span class = "p" > ])< / span >
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< / pre > < / div >
< / div >
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< img alt = "../../_images/Forecast_Model_Vertical_Sounding_25_0.png" src = "../../_images/Forecast_Model_Vertical_Sounding_25_0.png" / >
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< p > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html" > Top< / a > < / p >
< / section >
< hr class = "docutils" / >
< section id = "model-sounding-comparison" >
< h3 > 9 Model Sounding Comparison< a class = "headerlink" href = "#model-sounding-comparison" title = "Permalink to this heading" > < / a > < / h3 >
< p > Now that we know how to retreive and plot the data for one model, we can
run a loop to retreive data for various models and plot them for
comparison. In this example we’
compare with NAM40.< / p >
< p > This is also where our functions become so important, because we can
easily recall all that logic and keep this for-loop fairly simple.< / p >
< div class = "highlight-ipython3 notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > models< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "s2" > " RAP13" < / span > < span class = "p" > ,< / span > < span class = "s2" > " GFS20" < / span > < span class = "p" > ,< / span > < span class = "s2" > " NAM40" < / span > < span class = "p" > ]< / span >
< span class = "k" > for< / span > < span class = "n" > modelName< / span > < span class = "ow" > in< / span > < span class = "n" > models< / span > < span class = "p" > :< / span >
< span class = "n" > timeReq< / span > < span class = "o" > =< / span > < span class = "n" > DataAccessLayer< / span > < span class = "o" > .< / span > < span class = "n" > newDataRequest< / span > < span class = "p" > (< / span > < span class = "s2" > " grid" < / span > < span class = "p" > )< / span >
< span class = "n" > timeReq< / span > < span class = "o" > .< / span > < span class = "n" > setLocationNames< / span > < span class = "p" > (< / span > < span class = "n" > modelName< / span > < span class = "p" > )< / span >
< span class = "n" > cycles< / span > < span class = "o" > =< / span > < span class = "n" > DataAccessLayer< / span > < span class = "o" > .< / span > < span class = "n" > getAvailableTimes< / span > < span class = "p" > (< / span > < span class = "n" > timeReq< / span > < span class = "p" > ,< / span > < span class = "kc" > True< / span > < span class = "p" > )< / span >
< span class = "n" > times< / span > < span class = "o" > =< / span > < span class = "n" > DataAccessLayer< / span > < span class = "o" > .< / span > < span class = "n" > getAvailableTimes< / span > < span class = "p" > (< / span > < span class = "n" > timeReq< / span > < span class = "p" > )< / span >
< span class = "n" > fr< / span > < span class = "o" > =< / span > < span class = "n" > DataAccessLayer< / span > < span class = "o" > .< / span > < span class = "n" > getForecastRun< / span > < span class = "p" > (< / span > < span class = "n" > cycles< / span > < span class = "p" > [< / span > < span class = "o" > -< / span > < span class = "mi" > 1< / span > < span class = "p" > ],< / span > < span class = "n" > times< / span > < span class = "p" > )< / span >
< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "s2" > " Using " < / span > < span class = "o" > +< / span > < span class = "n" > modelName< / span > < span class = "o" > +< / span > < span class = "s2" > " forecast time " < / span > < span class = "o" > +< / span > < span class = "nb" > str< / span > < span class = "p" > (< / span > < span class = "n" > fr< / span > < span class = "p" > [< / span > < span class = "mi" > 0< / span > < span class = "p" > ]))< / span >
< span class = "n" > tr< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "n" > fr< / span > < span class = "p" > [< / span > < span class = "mi" > 0< / span > < span class = "p" > ]]< / span >
< span class = "n" > p< / span > < span class = "p" > ,< / span > < span class = "n" > t< / span > < span class = "p" > ,< / span > < span class = "n" > d< / span > < span class = "p" > ,< / span > < span class = "n" > u< / span > < span class = "p" > ,< / span > < span class = "n" > v< / span > < span class = "o" > =< / span > < span class = "n" > get_surface_data< / span > < span class = "p" > (< / span > < span class = "n" > modelName< / span > < span class = "p" > ,< / span > < span class = "n" > point< / span > < span class = "p" > ,< / span > < span class = "n" > tr< / span > < span class = "p" > )< / span >
< span class = "n" > p< / span > < span class = "p" > ,< / span > < span class = "n" > t< / span > < span class = "p" > ,< / span > < span class = "n" > d< / span > < span class = "p" > ,< / span > < span class = "n" > u< / span > < span class = "p" > ,< / span > < span class = "n" > v< / span > < span class = "p" > ,< / span > < span class = "n" > w< / span > < span class = "o" > =< / span > < span class = "n" > get_levels_data< / span > < span class = "p" > (< / span > < span class = "n" > modelName< / span > < span class = "p" > ,< / span > < span class = "n" > point< / span > < span class = "p" > ,< / span > < span class = "n" > tr< / span > < span class = "p" > ,< / span > < span class = "n" > p< / span > < span class = "p" > ,< / span > < span class = "n" > t< / span > < span class = "p" > ,< / span > < span class = "n" > d< / span > < span class = "p" > ,< / span > < span class = "n" > u< / span > < span class = "p" > ,< / span > < span class = "n" > v< / span > < span class = "p" > )< / span >
< span class = "c1" > # Skew-T< / span >
< span class = "n" > plot_skewT< / span > < span class = "p" > (< / span > < span class = "n" > modelName< / span > < span class = "p" > ,< / span > < span class = "n" > p< / span > < span class = "p" > ,< / span > < span class = "n" > t< / span > < span class = "p" > ,< / span > < span class = "n" > d< / span > < span class = "p" > ,< / span > < span class = "n" > u< / span > < span class = "p" > ,< / span > < span class = "n" > v< / span > < span class = "p" > ,< / span > < span class = "n" > w< / span > < span class = "p" > ,< / span > < span class = "n" > tr< / span > < span class = "p" > [< / span > < span class = "mi" > 0< / span > < span class = "p" > ])< / span >
< / pre > < / div >
< / div >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > Using< / span > < span class = "n" > RAP13< / span > < span class = "n" > forecast< / span > < span class = "n" > time< / span > < span class = "mi" > 2023< / span > < span class = "o" > -< / span > < span class = "mi" > 07< / span > < span class = "o" > -< / span > < span class = "mi" > 25< / span > < span class = "mi" > 19< / span > < span class = "p" > :< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 00< / span >
< span class = "n" > Found< / span > < span class = "n" > surface< / span > < span class = "n" > record< / span > < span class = "n" > at< / span > < span class = "mf" > 839.4< / span > < span class = "n" > MB< / span >
< span class = "n" > Using< / span > < span class = "mi" > 32< / span > < span class = "n" > levels< / span > < span class = "n" > between< / span > < span class = "mf" > 839.4< / span > < span class = "ow" > and< / span > < span class = "mf" > 100.0< / span > < span class = "n" > MB< / span >
< / pre > < / div >
< / div >
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< img alt = "../../_images/Forecast_Model_Vertical_Sounding_28_1.png" src = "../../_images/Forecast_Model_Vertical_Sounding_28_1.png" / >
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< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > Using< / span > < span class = "n" > GFS20< / span > < span class = "n" > forecast< / span > < span class = "n" > time< / span > < span class = "mi" > 2023< / span > < span class = "o" > -< / span > < span class = "mi" > 07< / span > < span class = "o" > -< / span > < span class = "mi" > 25< / span > < span class = "mi" > 12< / span > < span class = "p" > :< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 00< / span >
< span class = "n" > Found< / span > < span class = "n" > surface< / span > < span class = "n" > record< / span > < span class = "n" > at< / span > < span class = "mf" > 842.5< / span > < span class = "n" > MB< / span >
< span class = "n" > Using< / span > < span class = "mi" > 32< / span > < span class = "n" > levels< / span > < span class = "n" > between< / span > < span class = "mf" > 842.5< / span > < span class = "ow" > and< / span > < span class = "mf" > 100.0< / span > < span class = "n" > MB< / span >
< / pre > < / div >
< / div >
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< img alt = "../../_images/Forecast_Model_Vertical_Sounding_28_3.png" src = "../../_images/Forecast_Model_Vertical_Sounding_28_3.png" / >
2023-07-25 21:32:54 +00:00
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > Using< / span > < span class = "n" > NAM40< / span > < span class = "n" > forecast< / span > < span class = "n" > time< / span > < span class = "mi" > 2023< / span > < span class = "o" > -< / span > < span class = "mi" > 07< / span > < span class = "o" > -< / span > < span class = "mi" > 25< / span > < span class = "mi" > 18< / span > < span class = "p" > :< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 00< / span >
< span class = "n" > Found< / span > < span class = "n" > surface< / span > < span class = "n" > record< / span > < span class = "n" > at< / span > < span class = "mf" > 833.8< / span > < span class = "n" > MB< / span >
< span class = "n" > Using< / span > < span class = "mi" > 32< / span > < span class = "n" > levels< / span > < span class = "n" > between< / span > < span class = "mf" > 833.8< / span > < span class = "ow" > and< / span > < span class = "mf" > 50.0< / span > < span class = "n" > MB< / span >
< / pre > < / div >
< / div >
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< img alt = "../../_images/Forecast_Model_Vertical_Sounding_28_5.png" src = "../../_images/Forecast_Model_Vertical_Sounding_28_5.png" / >
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< p > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html" > Top< / a > < / p >
< / section >
< hr class = "docutils" / >
< section id = "see-also" >
< h3 > 10 See Also< a class = "headerlink" href = "#see-also" title = "Permalink to this heading" > < / a > < / h3 >
< section id = "related-notebooks" >
< h4 > 10.1 Related Notebooks< a class = "headerlink" href = "#related-notebooks" title = "Permalink to this heading" > < / a > < / h4 >
< ul class = "simple" >
< li > < p > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Grid_Levels_and_Parameters.html" > Grid Levels and
Parameters< / a > < / p > < / li >
< li > < p > < a class = "reference external" href = "http://unidata.github.io/python-awips/examples/generated/Upper_Air_BUFR_Soundings.html" > Upper Air BUFR
Soundings< / a > < / p > < / li >
< li > < p > < a class = "reference external" href = "http://unidata.github.io/python-awips/examples/generated/Model_Sounding_Data.html" > Model Sounding
Data< / a > < / p > < / li >
< / ul >
< / section >
< section id = "additional-documentation" >
< h4 > 10.2 Additional Documentation< a class = "headerlink" href = "#additional-documentation" title = "Permalink to this heading" > < / a > < / h4 >
< p > < strong > python-awips:< / strong > < / p >
< ul class = "simple" >
< li > < p > < a class = "reference external" href = "http://unidata.github.io/python-awips/api/DataAccessLayer.html" > awips.DataAccessLayer< / a > < / p > < / li >
< li > < p > < a class = "reference external" href = "https://unidata.github.io/python-awips/api/ModelSounding.html" > awips.ModelSounding< / a > < / p > < / li >
< / ul >
< p > < strong > matplotlib:< / strong > < / p >
< ul class = "simple" >
< li > < p > < a class = "reference external" href = "https://matplotlib.org/3.3.3/api/_as_gen/matplotlib.pyplot.html" > matplotlib.pyplot< / a > < / p > < / li >
< / ul >
< p > < strong > MetPy< / strong > < / p >
< ul class = "simple" >
< li > < p > < a class = "reference external" href = "https://unidata.github.io/MetPy/latest/api/generated/metpy.calc.wind_speed.html" > metpy.wind_speed< / a > < / p > < / li >
< li > < p > < a class = "reference external" href = "https://unidata.github.io/MetPy/latest/api/generated/metpy.calc.wind_direction.html" > metpy.wind_direction< / a > < / p > < / li >
< li > < p > < a class = "reference external" href = "https://unidata.github.io/MetPy/latest/api/generated/metpy.calc.vapor_pressure.html" > metpy.vapor_pressure< / a > < / p > < / li >
< li > < p > < a class = "reference external" href = "https://unidata.github.io/MetPy/latest/api/generated/metpy.calc.dewpoint.html" > metpy.dewpoint< / a > < / p > < / li >
< li > < p > < a class = "reference external" href = "https://unidata.github.io/MetPy/latest/api/generated/metpy.plots.SkewT.html" > metpy.skewt< / a > < / p > < / li >
< li > < p > < a class = "reference external" href = "https://unidata.github.io/MetPy/latest/api/generated/metpy.plots.Hodograph.html" > metpy.hodograph< / a > < / p > < / li >
< / ul >
< p > < a class = "reference external" href = "https://unidata.github.io/python-awips/examples/generated/Forecast_Model_Vertical_Sounding.html" > Top< / a > < / p >
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