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How CESM3 reads the emission inventory

J

jinmuluo

Jinmu Luo
Member
What version of the code are you using?
cesm3.beta06


Have you made any changes to files in the source tree?
many changes


Describe your problem or question:
Hi,
I have a naive question on how CESM (or CAM-Chem) reads the bottom-up emission inventory.
A typical compset uses the emission inventory from: /glade/campaign/cesm/cesmdata/inputdata/atm/cam/chem/emis/CMIP6_emissions_1750_2015/emissions-cmip6_NO_anthro_surface_1750-2015_0.9x1.25_c20170608.nc

which has only emission variable " float emiss_anthro(time, lat, lon) "

If i want to replace this emission inventory with multiple sectors inventory like : /glade/campaign/acom/acom-weather/MUSICA/emissions/cams/CAMS-GLOB-ANTv4.2/orig/CAMS-GLOB-ANT_2000-2020_0.1x0.1_anthro_nox.nc

Should we rewrite the format of the above emission inventory into the same as the first one? OrCESM knows how to add all the different sectors together?

best,
 
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aswann2

aswann2

Abigail Swann
Member
Someone who works with CAM-CHEM would know most about this!

I don't know if CAM-CHEM would add together the different sectors, or if you should add them together yourself ahead of time. Is there a reason you don't want to add the sectors together?

There are separate files for other NO emission sources, but I don't know about different anthropogenic sectors.
For example emissions-cmip6_NO_other_surface_1750-2015_0.9x1.25_c20170322.nc for other surface emissions (soils).
 
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J

jinmuluo

Jinmu Luo
Member
aswann2 said:
Someone who works with CAM-CHEM would know most about this!

I don't know if CAM-CHEM would add together the different sectors, or if you should add them together yourself ahead of time. Is there a reason you don't want to add the sectors together?

There are separate files for other NO emission sources, but I don't know about different anthropogenic sectors.
For example emissions-cmip6_NO_other_surface_1750-2015_0.9x1.25_c20170322.nc for other surface emissions (soils).
Click to expand...
Hi,

Thank you, I will stack the different sectors together and name the variable the same as the original variable name. Just want to make sure does CESM supports such diverse input sectors, for example, the " float emiss_anthro(time, lat, lon) " includes many different sectors (agricultural, industry, transportation, etc), it's hard to replace only one sector (like industry) of the emission in this inventory.
 
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