run hydrology model on dssat weather file

[alee]

https://github.com/comses/ming/blob/master/dssat/USAM8031.WTH

• Take rainfall rate from DSSAT weather data linked above. This feeds into Jordan & Eric's hydrology model as the rainfall input which then calculates how much total water remains in the cell and flows into neighboring cells based on the landscape
• Only route values from the warm half of the year, ignore based on temperature or between April 15th and September 15th
• Python wrapper runs hydrology model on the dssat weather data to generate WTH files
• run dssat in parallel on all the WTH files
• Jordan: pick out characteristic storms (1mm storm etc) to generate canned accumulations?

Assumptions

• hydrology model ignores infiltration / accumulation resets every day
• dssat still calculates drainage

@cmbarton @mcflugen @chporter please feel free to adjust as necessary

[alee]

1. How will the hydrology model deal with subdividing the daily rainfall numbers from the DSSAT weather file as it's doing it's thing?

2. Is the hydrology model using a runoff curve number or similar to deal with how much water stays on a cell vs moves on to neighboring cells? Cheryl was concerned if we were disabling infiltration on the hydrology model that it would treat each cell as a parking lot. DSSAT also does infiltration / runoff calculations based on the soil data and it's possible that eventually we could run DSSAT for a single day, grab its runoff numbers and send that to the hydrology model to route so the hydrology model would only be responsible for routing. This might be the "optimal" way to couple the hydrology model and DSSAT.