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why do CLM4.5 omit some important photosynthetic output fields compared to CLM4.0?

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ncepulee@...
why do CLM4.5 omit some important photosynthetic output fields compared to CLM4.0?

Hi,all!Compared to CLM4.0, some important photosynthetic output fields (VCMAXSUN/VCMAXSHA) are disappeared in CLM4.5.  Others,like leaf boundary  conductivity or  canopy conductivity are not output by both version.Lack of a systematic tutorial  of  add new fileds to the master list of hitory output fields makes it difficult for beginner to get the personal  interested fileds. May i suggest the organizaiton provied a systematic tutorial of how to add new fileds ? Thanks ahead for anyone who contribute to this question.

oleson

With regards to adding new history fields, there is a tutorial here:

 

http://www.cesm.ucar.edu/events/tutorials/20140218/day4-practical4-levis...

 

Material from a past CLM tutorial is here:

 

https://www2.cesm.ucar.edu/events/tutorials/clm/2014/coursework

ncepulee@...

Hi,oleson. I am still confused with how to ouput a field which isn't in clmtype.F90. For example, how can i firstly export VCMAXSUN or gscan to the clmtype.F90, then export to the histFlds.F90,finally export to history field.

oleson

Since vcmxsun and vcmxsun are output in the CLM4.0 code, why don't you look there to see how you might put those variables into the CLM4.5 code?

For example, in the CLM4.0 version of clmtype:

 

   real(r8), pointer :: vcmxsun(:)    !sunlit leaf Vcmax (umolCO2/m^2/s)
   real(r8), pointer :: vcmxsha(:)    !shaded leaf Vcmax (umolCO2/m^2/s)

 

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