Plot calculated variables

[Aariq]

• [x] Evapotranspiration
• [x] Plant-available water
• [x] Heat/comfortability index

Need to figure out what models/calculations to use and make the plots.

[UArizonaCampusLivingLabforGSI]

From Zentra

Plant available water (https://www.metergroup.com/en/meter-environment/measurement-insights/how-model-plant-available-water) Available water content = field capacity - plant wilting point Plant Available Water = (Volumetric Water Content - Plant Wilting Point) / Available Water Content

Evapotranspiration (https://docs.zentracloud.com/l/en/article/zlpd1t7hk2-evapotranspiration) and refenerces the Penman-Monteith equation: https://www.fao.org/3/x0490e/x0490e06.htm#chapter%202%20%20%20fao%20penman%20monteith%20equation

@MJBarrios will share example files from the output on zentra although they do not look helpful.

[Aariq]

If it's Penman-Monteith for ET, I'm pretty sure I have code laying around somewhere to calculate this and we have all the data we need. For plant available water, it seems like theres some guestimation to be done, right? I wonder what values they are using for field capacity and plant wilting point 🤔

[Aariq]

Plant available water is something @jessicaguo might be able to help with.

[Aariq]

What is the time resolution for the evapotranspiration? The penman() function in the SPEI package calculates ET using monthly averages of variables. Is that what we want? https://sbegueria.r-universe.dev/SPEI/doc/manual.html#Potential-evapotranspiration

[Aariq]

Let's use this issue to discuss what is displayed in the app. I've opened another issue in the data wrangling repo to discuss accessing the data via REST API: https://github.com/UArizonaGSICampusLivingLab/gsi-wrangling-workflow/issues/23

[Aariq]

New plan is to get RH instead of vapor pressure, so I can also change the vp/vpd plot to RH instead