Soil and sea salt aerosols do not appear in the first layer

Any issues with running WRF Chemistry

Soil and sea salt aerosols do not appear in the first layer

Postby georgeg » Thu Oct 12, 2017 8:42 am

Hello. I am using the RADM2/MADE-SORGAM mechanism and I noticed that soil derived (soila) and sea-salt (seas) aerosols do not appear in the first model layer. These cocnentrations look OK though at the second layer.

As a result, PM10* concentrations are very similar to PM2.5 concentrations over regions with low anthropogenic emissions at the first model layer.
* In MADE-SORGAM PM10 = PM2.5 + soila + seas + antha. Coarse mode aerosols from anthropogenic emissions (antha) are added in the first model layer as expected and can see them in the model output.

I tried to have a look at the code but everything looks OK. More specifically I am using dust_opt = 13 (GOCART dust emissions for the MADE/SORGAM mechanism in version 3.9.1) and seas_opt = 2. Both these mechanisms look to add emitted aerosols at the first model layer and not the second as I see in the model output.

Anyone has an idea why this might be happening?
George K. Georgiou
PhD Candidate
The Cyprus Institute
Nicosia, Cyprus
georgeg
 
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