[RegCNET] A Question about RegCM4

[Graziano Giuliani]

On 12/26/2012 10:23 AM, Graziano Giuliani wrote:
> On 12/25/2012 05:45 AM, 164993534 wrote:
>> Dear Mr.
>>       I am a user of RegCM4 ,and I learn to use it recently. When I use this
>> model ,I have a question about it. How can i change the initial snow amount in
>> DOMAIN.INFO ? The initial snow amount in the model is 0. Can i use the Fortran
>> compiler to read the “DOMAIN.INFO”and change it ，then use the changed file to
>> run the model？IF can't ，how can i do that？ I am look forward for your
>> response ，Thank you very much！ Merry Christmas & Happy New Year！
>> Yours，
>> sincerely
>>
> [...]

Forgot the following: now the model in V 4.3.5 is also able also to use a 
previous run surface output snow field to initialize the model snow at startup.

The procedure is this:

- Do a first run for 2-5 years to build up a "good" snow coverage.
- Extract the snow field from the last timestep in the last output SRF file:

    ncks -d time,120 domname_SRF.YYYYMMDDHH.nc snow.nc
    ncrename -v snv,scv snow.nc

- Place the snow.nc file in the model running directory and run again the 
terrain program. The presence of the snow.nc file should be detected, and the 
snow coverage snowam should be read from that file. A message should be present 
in the terrain printout.

Ciao!

Graziano.

-- 
Graziano Giuliani - Earth System Physics Section
The Abdus Salam International Centre for Theoretical Physics
Strada Costiera, 11 - I - 34151 Trieste Italy