EFDC+ allows the export of NetCDF-CF (NetCDF- Climate and Forecast) formatted data. This allows EFDC+ output to be read and displayed on web servers.
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• Establish an interface standard that simplifies the design of new software for accessing geoscience data.
The new version of EFDC+ is able to export the native output in NetCDF-CF format for Windows and Linux. EE_Explorer, the pre-and post-processor for EFDC+ can also convert EFDC *.OUT files to netCDF .nc files, including the derived WQ parameters. EFDC+ currently exports 44 parameters to NetCDF format..
EFDC+ exports the NetCDF files at the same interval that it produces the model linkages files, which is set in the tab for Timing and Linkage | Linkage | NetCDF.
The main configuration for NetCDF output is in the EFDC_Exlporer Linkage | NetCDF tabs as shown in 240419309 Figure 1. Here the user can turn on netCDF output by checking the Output to NetCDF checkbox. The user may select the level at which the NetCDF data is compressed with the Deflate Level setting. This can range from 1, no compression, to 9 for maximum compression, but is recommended by UNIDATA to be set to 2 for the best balance between file size and speed.
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In the File Creation frame, the user is given the option of EFDC+ generating a Single File, or Multiple Daily Files.The Multiple Daily Files option provides one netCDF file for each one day (24 hours) of model output. NetCDF files (.nc files) are placed in the #output folder along with the EFDC output. The snapshots for the NetCDF files are determined by the setting for the interval for the EE linkage file and the user can change the snapshot interval by changing the EE linkage options, Note that linkage frequency should be 10 minutes or more for proper display in ArcGIS tools. After setting these options the user should save their model and run EFDC+, which will then export the NetCDF .nc files to the #output folder.
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Ocean Data View (ODV) is a software package for the interactive exploration, analysis, and visualization of oceanographic and other geo-referenced profile, time-series, trajectory, or sequence data.
ODV supports the netCDF format and lets you explore and visualize CF, COARDS, GDT, and CDC compliant netCDF datasets. This works with netCDF files on your local machine as well as with remote netCDF files served by an OPeNDAP server.
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To demonstrate the netCDF output is consistent with the data viewed in EE, a number of comparisons have been made for different models. Examples of an output from the West Lake WQ model in EE, ArcGIS, and ncWMS are shown in 240419309 Figure 3, Figure 4 and Figure 5 respectively. Note that the West Lake model may be downloaded from the EE website.
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