1. Introduction
This tutorial will provide step-by-step guidance in on how to generate time and space wind forcing data for the Katrina hurricane (August , 2005) in Florida Bay. DSI has developed a script to generate Wind Field and Pressure from storm track data as inputs of EFDC+ and then show wind field vector and pressure results in EE. Based on the format described below users can develop their own scripts.
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To generate field files, we need to prepare a storm track record file. In this case, the storm track recorded for the Katrina hurricane (August , 2005) is downloaded from Weather from the Weather Underground website (https://www.wunderground.com/hurricane/atlantic/2005/Major-Hurricane-Katrina).
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Recorded storm track data will be processed by a script to generate field files for EE. Normally, field files will be generated in a text file format (*fld.inp), but sometimes, the data size is very larrgelarge. EE allows saving field files in binary format (*fld.fld) to save memory and read files faster. Examples of code to create the binary files are provided in Appendix B - Data format B-26.
Generated field files will have a format as shown in Figure 2 below. See Appendix B - Data format B-26 for more details on the fields data format.
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After field files are generated, the user can import them as input of EFDC+ in EE. From Model Control form, expand External Forcing Data tab, go to TIme Time Varying Fields sub-tab. From Time Varying Fields menu, RMC on Pressure Field as shown in Figure 3 below.
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5. Visualize field files in EEMS
Once the field is generated, EFDC will use this field in place of the other forcings defined by the user to simulate. Users The user may review the forcing fields in 2DH View by selecting Forcing Fields from the 2DH View Option as shown in Figure 5 below.
Figure 5. 2DH View Option form.
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