[FEATURE REQUEST] 2020 Volcano Emissions

[msulprizio]

@chfite wrote:

I am running GEOS-Chem simulations into 2020 and my simulation stopped because it couldn’t find volcano emissions past Jan 1, 2020. I looked on the Dalhousie and ComputeCanada sites to download those files but neither site has Volcano emissions past that date. I have not been able to get the Harvard FTP site to load for the past day or so, but I assume the 2020 emissions are not there either?

If not, is there a way to get those emissions or are there plans to soon have those available?

[msulprizio]

@christophkeller wrote:

The volcano SO2 emissions are available through May 2020 (eruptive & degassing), and persistent (i.e., degassing) emissions are assumed for all days afterwards. The updated files are here:

https://gmao.gsfc.nasa.gov/gmaoftp/geoscf/volcano_so2/

I know that Pete Colarco has more recent eruptive data but those haven’t been tested yet.

[msulprizio]

Thanks @christophkeller! We can update the volcano emissions up through May 2020 in GEOS-Chem 13.3.0.

In addition, we will be adding a climatology option soon as discussed in #500.

[christophkeller]

Sounds good! In the tar file that I shared there are daily files up to Jan 1, 2022. The data after May 2020 is just the degassing climatology, which is probably what you would want to use for a climatology? There is also an explicit climatology file (degassing only) in the tar file, named so2_volcanic_emissions_CARN_v202005.degassing_only.rc

[msulprizio]

This is now resolved by PR #921 and is currently merged into the dev branch. It will be included in GEOS-Chem 13.3.0.

NOTE: The option to use the volcano climatology (i.e. degassing emissions only) has also been included via the pull request geoschem/HEMCO#110.