Is it possible evaluate canopy water?

[charlie.opazo]

Hello!

I have leaf wetness data measured with the pythos 31 sensor (PHYTOS 31 - METER Group). This sensor provides leaf wetting duration and leaf wetness level in raw counts. According to the pythos 31 manual, it is possible to estimate the water in a leaf from these measurements.

So, is it possible to compare these data with "canopy water" variable of wrf? What exactly does water canopy represent?

I would appreciate your help. Thank you!

 

[Ming Chen]

The variable "CANWAT" represents canopy water in WRF. The documents below describes in detail the physical meaning of this variable in RUC and NohMP LSM modules:

(1) Benjamin, Stanley G., Georg A. Grell, John M. Brown, and Tatiana G. Smirnova, 2004: Mesoscale weather prediction with the RUC hybrid isentropic-terrain-following coordinate model. Mon. Wea. Rev., 132, 473-494.
doi:10.1175/1520-0493(2004)132<0473:MWPWTF>2.0.CO;2

(2) The Community Noah-MP Land Surface Modeling System Technical Description Version 5.0 | OpenSky

I am not a land model expert and don't really know how to compare leaf wetting duration and leaf wetness level with CANWAT. Hope the above documents are helpful for you.