Questions about case discription and building cam5

[xianbiaokang@gmail_com]

I have two questions and am asking for some help.

First, I am not clear about the case description, I list some cases as following,

B_1850_CAM5 (B1850C5)
Description: All active components, pre-industrial, cam5 physics
B_1850-2000_CAM5 (B20TRC5)
Description: All active components, 1850 to 2000 transient, cam5 physics
E_1850_CAM5 (E1850C5)
Description: Pre-industrial fully active ice and som ocean, cam5 physics
F_AMIP_CAM5 (FAMIPC5)
Description: AMIP run for CMIP5 protocol with cam5

I have no idea of the content labeled with red color

Second, I have tried to build case B20TRC5 with resolution f02_f02, I do this on hopper with following steps
./create_newcase -case B20TRC5 -mach hopper -compset B20TRC5 -res f02_f02
./configure -case

At the configure step, I got the following error messages:

CAM build-namelist - ERROR: No default value found for ncdata
user defined attributes:
key=ic_md val=18500101
Died at /global/scratch/sd/kang/cesm1_0/models/atm/cam/bld/build-namelist line 2572.
ERROR: generate_resolved.csh error for atm template
configure error: configure generated error in attempting to created resolved scripts


I have read carefully Eaton's reply on post "Problem running CAM5 on 128x256 eul resolution", in which eaton has given two solutions to a similar problem, both solutions are based on the model has been compiled successfully and the exectable file ccsm.exe has been generated, however, in my case, the model is fv dycore and the model has not been compiled successfully, I am not sure how to continue the process.

Thanks in advance for any suggestions.

 

[eaton]

pre-industrial runs use 1850 climatological forcing data
1850-2000 transient runs use historical forcing data
AMIP runs use prescribed SST and ice fraction data

The error from ./configure -case is saying that there is no CAM5 initial file available for that resolution. This configuration will be working in the upcoming cesm1_0_3 release (in about a week from now).

 

[xianbiaokang@gmail_com]

eaton, your kind reply is very helpful, Thank you very much.

 

[yaozhixiong@foxmail_com]

Hi, eatonCan you tell me the differences between historical forcing data and prescribed data? or the differences between F_AMIP and F_1850-2000? I go to check the cam.input_data_list in AMIP (for the composet F_AMIP) and 1850-2000 (for the composet F_1850-2000). They are the same. 
Thanks.yao

 

[eaton]

Historical forcing data is one type of prescribed data.  The other main type of prescribed data is climatological.F_AMIP uses historical SST data.  So it's using the data ocean model to prescribe SST for some historical period.  AMIP refers to a specific protocol for an atmosphere model intercomparison project.  You should investigate that on the web.F_1850-2000 also uses historical SST data, but starting at 1850 rather than at the AMIP protocol start date of 1979 (or something close to that).  My guess is that the data for the AMIP simulations is included in this dataset and that's why you see the same datasets in the namelist.