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please, i need your help,thanks!

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please, i need your help,thanks!

Dear everyone, two questions, we look forward to your reply, thanks.



        I'm glad you can see our questions. In the process of using CESM 1.2.2, we have met some problems. I sincerely hope that we can get your help.


        The questions are as follows:


         1) We created an experiment using CESM 1.2.2 on the Tianhe2 server in China, using B20TRBPRP compset and f09_g16 resolution to simulate global climate change from 1850 to 2005. We want to validate our simulation results.  Which existing simulation results that we can download from your official websites can be used to validate? For example, the website of CMIP5 or


         2)  We do not fully understand the difference between the compsets of B20TRBDRD and B20TRBPRP.  In the B20TRBDRD, the CO2 concentration can be set as constant or 1% ramp or read from a file.  But in the B20TRBPRP, the CO2 concentration compute from surface CO2 fluxes.  My question:  In B20TRBDRD, is the CO2 read from the file directly involved in the radiation calculation? Or is it first regulated by the carbon cycle and then involved in the radiation calculation?




We look forward to your reply.


You have posted in a section of the forum for WACCM. The compsets you are asking about use CAM, not WACCM. Please post your questions in a forum under the "Atmospheric Modeling with CAM" section, so that someone who works with CAM can help you:

Mike Mills
WACCM Liaison
Atmospheric Chemistry Division
NCAR Foothills Lab
Boulder, Colorado USA


OK, all right,thank U 

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