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Repository for the Python Crop Simulation Environment
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Can the wofost model output ET (actual evaporation)? #63

Closed lwq-star closed 1 year ago

lwq-star commented 1 year ago

Hello, can the wofost model output ET (actual evaporation)? I would like to assimilate the ET's of the model, but I can't find the variable ET.

lwq-star commented 1 year ago

I see that the model can output TRA, can it be used as a substitute? I don't know much about the model yet and look forward to your answer.

ajwdewit commented 1 year ago

Hi, each model has a configuration file, see here: https://pcse.readthedocs.io/en/stable/reference_guide.html#engine-configuration-files You can add variables to the list with OUTPUT_VARS. If you are interested in soil evaporation, this is the variable "EVS", crop transpiration "TRA" is already in the list.

lwq-star commented 1 year ago

Thanks, I can't find the variable "EVS" in the examples or the manual (Gentle intro WOFOST-7_2_v20210518.pdf) , only "EVSMX", "EVST".

I found "ET0", which is the potential evaporation rate, so is there an actual evaporation rate?

If there is no ET (actual evaporation rate), do I have to get it from plant transpiration rate and soil evaporation rate?

lwq-star commented 1 year ago

image This is the PML_V2 0.1.7: Coupled Evapotranspiration and Gross Primary Product (GPP) in google earth engine, see here

in this data ET (actual evaporation rate) = Ec + Es, I think in the wofost model ET = TRA + EVS (if this variable is available), am I correct?

Thank you for discussing this issue with me.

ajwdewit commented 1 year ago

EVST = accumulated soil evaporation in cm. Variable EVS is the daily soil evaporation in cm/day

Allard

Op 22-07-2022 03:34 schreef lwq-star @.***>:

Thanks, I can't find the variable "EVS" in the examples https://pcse.readthedocs.io/en/stable/code.html?highlight=Engine%20configuration%20files# or the manual (Gentle intro WOFOST-7_2_v20210518.pdf) , only "EVSMX", "EVST".

I found "ET0", which is the potential evaporation rate, so is there an actual evaporation rate?

If there is no ET (actual evaporation rate), do I have to get it from plant transpiration rate and soil evaporation rate?

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lwq-star commented 1 year ago

Thank you, I have managed to export them. Sorry to disturb you on holiday. But I'm still wondering why I can't find the variable "EVS" in the description or the manual, it's only in the source code that they exist. Is there a full description of the model variables? As far as I can see Gentle intro WOFOST-7_2_v20210518.pdf and WOFOST_system_description.pdf are also incomplete.