what is the difference bewteen "BGC CO2=prog rad CO2=prog" and "BGC CO2=diag rad CO2=diag"

[1036668667@qq_com]

what is the difference bewteen "BGC CO2=prog rad CO2=prog" and "BGC CO2=diag rad CO2=diag" . Thanks !

 

[nusbaume]

Hello,

I believe that "BGC CO2" is the CO2 that is seen by surface models and the biogeochemistry routines, whereas "rad CO2" is the CO2 that is seen by radiation.

Next, the "prog", or prognostic setting, means you are allowing the model to change the atmospheric concentration of CO2 based-off the surface fluxes and emissions, whereas the "diag", or diagnostic setting, means you are specifying the CO2 concentration in the atmosphere over time regardless of what is happening at the surface.

Finally, you can find more info about this in the CESM tutorial BGC presentation found online here:

http://www.cesm.ucar.edu/events/tutorials/2019/files/Breakout-BGC.pdf

Hope that helps, and have a great day!

Jesse

 

[1036668667@qq_com]

Thank you very much. I understand completely. Thank you again！

 

[CGL]

Hello,

I believe that "BGC CO2" is the CO2 that is seen by surface models and the biogeochemistry routines, whereas "rad CO2" is the CO2 that is seen by radiation.

Next, the "prog", or prognostic setting, means you are allowing the model to change the atmospheric concentration of CO2 based-off the surface fluxes and emissions, whereas the "diag", or diagnostic setting, means you are specifying the CO2 concentration in the atmosphere over time regardless of what is happening at the surface.

Finally, you can find more info about this in the CESM tutorial BGC presentation found online here:

http://www.cesm.ucar.edu/events/tutorials/2019/files/Breakout-BGC.pdf

Hope that helps, and have a great day!

Jesse

Hi,@Jesse! you share the link seems like discard.Where can I find the tutorials pdf from 2019 to 2020?

 

[peverley]

Hi -

Looks like the link broke when the website was updated.

Try: https://www2.cesm.ucar.edu/events/tutorials/2019/files/Breakout-BGC.pdf

Courtney

 

[CGL]

Hi -

Looks like the link broke when the website was updated.

Try: https://www2.cesm.ucar.edu/events/tutorials/2019/files/Breakout-BGC.pdf

Courtney

Thanks,Courtney! That's will be help:)