CLM spin up

[Sijia Chen]

Hello everyone, I would like to ask about the variable output method in user_nl_clm when setting up spin up. Does the output method here have to be the same as the output method during formal simulation?

 

[oleson]

Generally, we setup separate cases/simulations for spinup and "formal". So you can use different history field output approaches for each.

 

[Sijia Chen]

Generally, we setup separate cases/simulations for spinup and "formal". So you can use different history field output approaches for each.

Thank you，dear Oleson,actually, I want to know if the fsurdat of the two case spinup and formal need to be same

 

[Sijia Chen]

Generally, we setup separate cases/simulations for spinup and "formal". So you can use different history field output approaches for each.

Dear Oleson, how many years could i set in a spinup case

 

[slevis]

The fsurdat of the two cases can be the same, but do not need to be the same.

If this is a BGC (biogeochemistry) spin-up using the AD (accelerated decomposition) method, then we recommend several hundred years of spin-up.

If this is a SP (satellite phenology) spin-up, then a few decades should suffice.

 

[Sijia Chen]

The fsurdat of the two cases can be the same, but do not need to be the same.

If this is a BGC (biogeochemistry) spin-up using the AD (accelerated decomposition) method, then we recommend several hundred years of spin-up.

If this is a SP (satellite phenology) spin-up, then a few decades should suffice.

Thank you very much, Dear slevis, actually, i don't know what AD means, is that means use ./xmlchange CLM_ACCELERATED_SPINUP=on?

 

[slevis]

Yes, but if you do not recognize the terminology, then I recommend first familiarizing yourself with this documentation:

Redirecting...

 

[Sijia Chen]

Yes, but if you do not recognize the terminology, then I recommend first familiarizing yourself with this documentation:

Redirecting...

OK, thank you very much,dear slevis