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Hydrometeorolgy Data for Long Term Simulation in GSSHA

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Attached picture is from the GSSHA long-term runoff simulation summary file. Although the first rainfall event starts on 07/14/2013 at 15:00, the summary file writes Hydrometeorology (hmet) data began on 07/15/2013 at 2:00.

Is this delay normal, shouldn't both rainfall and hmet data start on same time?



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Yes, the message is normal. After each precipitation event, GSSHA prints out this message. I think the date/time given is when GSSHA begins reading the HMET data from the file since the HMET data file is used for computing evapotranspiration after a rainfall event. I am not sure whether evapotranspiration calculations are performed during a rainfall event. The GSSHA documentation is unclear on this.

The main thing to check is that you have HMET data that covers your entire long term simulation time.


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