213 lines
7 KiB
HTML
213 lines
7 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<title>GFESuite Documentation - Identifying ISC Discrepancies</title>
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</head>
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<body>
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<h2 class="1Heading"><a name="Discrepancies"></a>Identifying Intersite
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Discrepancies</h2>
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The following procedure and tools allow the forecaster to view
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discrepancies
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between the local forecast and those from other sites. It is important
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to note that this method is presented only as a beginning to this
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complex
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problem and is offered not as a solution, but, rather, as a way to
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begin
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the conversation between developers and forecasters about how to
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utilize
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our computer power to accomplish intersite coordination. The exercises
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will familiarize you with the procedure and tools and show you how to
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run
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them. We hope that this will serve as a launching point for feedback
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and
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brainstorming.
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<p>In order to perform these exercises, you should have familiarity
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with
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creating and running Smart Tools and Procedures. See the <a
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href="SmartTools.html">Smart
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Tools Training Guide.<!-- Leave this comment for formatting purposes -->
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</a>
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</p>
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<p>
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<a href="#Procedure">Intersite Coordination Procedure</a>
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<br>
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<a href="#Ex1">Exercise
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Discrepancy-1
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-- Examining the "Swath" Edit Area</a>
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<br>
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<a href="#Ex2">Exercise
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Discrepancy-2
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-- Running the ISC_Discrepancies Procedure</a>
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<br>
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<a href="#Tools">Intersite Coordination Tools</a>
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<br>
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<a href="#Ex3">Exercise
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Discrepancy-3
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-- Running the ISC Tools</a>
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<br>
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<a href="#ModifyingIntersiteCoordinationProcedureandTools">Modifying
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Intersite Coordination Procedure and Tools</a>
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<br>
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</p>
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<hr width="100%">
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<h3 class="2Heading"><a name="Procedure"></a>Intersite Coordination
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Procedure</h3>
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<h4 class="3Heading">
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<a name="Ex1"></a>Exercise Discrepancy-1 -- Examining the "Swath" Edit
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Area</h4>
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<div class="Body">In this exercise, we will examine the "swath" edit
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area
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set up by the server around the CWA. You can think of a "swath" as a
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doughnut-shaped
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object around the border of the CWA/Marine Zones. This is the area in
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which
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we will be checking for discrepancies.</div>
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<ol>
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<div class="Body"><li>Select Main Menu-->Edit
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Areas-->ISC-->ISC_Tool_Area.</li>
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<li>Make sure the automatically generated area is satisfactory to
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you. If
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you
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want to make minor modifications, do so, and then re-save the area
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under
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the same name, "ISC_Tool_Area."</li>
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</div>
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</ol>
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<h5 class="3Heading">
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Example of the ISC_Tool_Area Swath:</h5>
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<h4 class="3Heading">
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<img nosave="" src="images/isc5.jpg" height="366" width="600"></h4>
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<h4 class="3Heading"><a name="Ex2"></a>Exercise Discrepancy-2 --
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Running the ISC_Discrepancies
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Procedure</h4>
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<div class="Body"><a name="pgfId=1012253"></a>In this exercise, we will
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run the ISC_Discrepancies procedure to see how it works.</div>
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<ol>
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<div class="Body"><li>Select Main
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Menu-->Consistency-->ISC_Discrepancies. A
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dialog will appear
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allowing you to choose Weather Elements and a Time Range. Initially,
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simply
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select Run/Dismiss.</li>
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<li>You will see grids highlighted in red where discrepancies were
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found.
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Make
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sure you are in ISC Mode by clicking the ISC Mode button on the button
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bar. Examine the highlighted grids to see if the discrepancies are
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apparent.</li>
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<li>To turn off the highlights, select Main
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Menu-->Consistency-->Clear All
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Highlights.</li>
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</div>
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</ol>
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<h5 class="2Heading">
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<font size="+0">ISC Discrepancy Dialog</font></h5>
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<div class="2Heading"><img nosave="" src="images/isc6.jpg"></div>
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<div class="2Heading">
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<p><font size="+0">After running the ISC Discrepancies Procedure, grids
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that exceed
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the
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NDFD discrepancy threshold are highlighted in red or orange in the Grid
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Manager:</font>
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<br>
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</p>
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</div>
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<div class="2Heading"><img nosave="" src="images/isc7.jpg"></div>
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<br>
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<br>
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<h3 class="2Heading"><a name="Tools"></a>Intersite Coordination Tools</h3>
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There are four tools to help identify discrepancies:
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<ol>
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<li>Show_ISC_Highlights -- highlights grids that are discrepant. This
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is
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the
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tool called by the ISC_Discrepancies Procedure.</li>
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<li>Show_ISC_Grid -- creates a discrepancy grid to be viewed from the
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Grid
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Manager.</li>
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<li>Show_ISC_Area -- creates an edit area identifying where
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discrepancies
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were
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found.</li>
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<li>Show_ISC_Info -- creates a dialog containing information about
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each segment (e.g., border) and how "discrepant" each border is.<br>
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</li>
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</ol>
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Note: These tools are baselined versions of <a href="ShowISC.html">Tim
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Barker's (BOI SOO) set
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of ISC tools</a>. <br>
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<br>
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These tools can be run as any other smart tool. In addition, they are
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automatically added to the Grid Manager popup menu and thus are easily
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accessible.<br>
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<h4 class="3Heading"><a name="Ex3"></a>Exercise Discrepancy-3 --
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Running the ISC Tools.</h4>
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<ol>
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<li>From a grid in the Grid Manager, select
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B3-->Show_ISC_Highlights. If
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discrepancies
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are found, the grid will be highlighted in red. When you have found a
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grid
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with discrepancies, run the B3-->Show_ISC_Area tool. This will
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display
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an edit area in which discrepancies were found.</li>
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<li>Run the B3-->Show_ISC_Grid tool. This will display a grid of
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the
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discrepancy
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values. The new weather element that was created is a temporary
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element.
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It will appear in the Spatial Editor legend as well as the Weather
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Element
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Browser. However, it is not saved in the server, so if you unload it or
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shut-down the GFE, it will be gone. Try unloading the temporary element
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from the legend.</li>
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<li>You can clear the highlight on the grid by selecting
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B3-->Clear
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Highlight.</li>
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<li>Run the B3-->Show_ISC_Info tool. This will display a dialog
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containing statistics about each border.<br>
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</li>
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</ol>
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<p>
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This is the ISC grid that we will examine using the ISC tools.
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Note that the BOU CWA temperatures are higher than the adjacent CYS and
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GLD temperatures:
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<br>
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<img nosave="" src="images/isc8.jpg" height="636" width="1108"><br>
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</p>
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<p>This is the discrepancy area created by the Show_ISC_Area
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tool.
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It highlights those locations in the isc swath where discrepancies were
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found:
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</p>
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<p><img nosave="" src="images/isc10.jpg" height="585" width="1109"></p>
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<p>This is the resulting discrepancy grid after running the
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Show_ISC_Grid
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tool:
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</p>
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<h4 class="3Heading"><img nosave="" src="images/isc11.jpg" height="588"
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width="1108"></h4>
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<br>
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<h3><a name="ModifyingIntersiteCoordinationProcedureandTools"></a>Modifying
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Intersite Coordination Procedure and Tools</h3>
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The Intersite Coordination Procedure and Tools are based on the
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ISC_Utility
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and the ISC_Utility_Local files which can be found in the Edit Action
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Dialog
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Utilities window. You can override the default settings in the
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ISC_Utility_Local
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file. Do not change the ISC_Utility file itself as this may be
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updated
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in future releases. For more information on Utilities, see the <a
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href="SmartTools.html#Util">Smart
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Tool Training Guide Utilities Section.</a>
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The ISC_Utility_Local file allows you to override various items within
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the ISC_Utility file. See the documentation in these files for more
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information.<br>
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<br>
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</body>
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</html>
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