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Problem about radiation balance in spin-up simulations with CESM1.2.2

Dear CESM users,I used two configurations with CESM1.2.2 (B_1850_CN and B_1850_BGC-BPRP) to conduct spin-up simulations under pre-industrial CO2 level.These spin-up simulations has been conducted for about 500 model years, but I find that the net TOA tadiation flux (FSNT-FLNT) stabilizes at about -1W/m2 and the surface air temperature keeps decreasing during the simulation period. I can't figure out the problem about this situation. I want to gain a quasi-equilibirium state about climate. Can anyone give me some suggestions about this problem?Best,Jiu
 

hannay

Cecile Hannay
AMWG Liaison
Staff member
This is not a scientifically validated configuration for cesm1.2.2. You might be able to adjust the TOA imbalnce by changing the radiative flux. Best bet woudl be to reduce the magnitude of SWCF.  

For CESM Scientifically Validated Configurations, look at:http://www.cesm.ucar.edu/models/scientifically-supported.html 

Which resolution are you using ? 
 
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