How to change the radiation reflected by the surface to the atmosphere

[jialiu]

Dear all,
I would like to modify the radiation reflected by the surface to the atmosphere. Where should I change the code?
Thanks very much

 

[dbailey]

What version of the code are you referring to? Each of the surface components (CLM, CICE, POP, CISM) have an albedo formulation. That is if you are talking about the shortwave. Or are you talking about the longwave radiation?

 

[jialiu]

What version of the code are you referring to? Each of the surface components (CLM, CICE, POP, CISM) have an albedo formulation. That is if you are talking about the shortwave. Or are you talking about the longwave radiation?

I want to modify shortwave radiation.

 

[dbailey]

For which component?

 

[jialiu]

For which component?

For F compset.

 

[dbailey]

This is a bit more information. However, I was asking which component ... CLM, CICE, DOCN, etc? The land model (CLM), sea ice model (CICE) each have their own computed albedos.

 

[jialiu]

This is a bit more information. However, I was asking which component ... CLM, CICE, DOCN, etc? The land model (CLM), sea ice model (CICE) each have their own computed albedos.

Sorry, I would like to know CLM component.

 

[dbailey]

Ok. I am moving this to the CLM forum as they can help you with adjusting albedos.

 

[oleson]

The albedo calculations in CLM are quite complex. Please see this chapter of the technical note:

2.3. Surface Albedos — ctsm release-clm5.0 documentation

This previous post may be helpful as well:

Using fixed snow fraction, thickness, etc. in selected regions?

Hi everyone, I am trying to run a sensitivity test with CESM 1.2.2, where I'd like to fix the albedo at certain regions, possibly with data from a previous run. From what I understand, if vegetation, and aerosol remains the same, all I have to worry about is the change of snow cover due to...

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