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Question on Dust Parameterization Scheme in CESM2 for CMIP6 (midHolocene vs. piControl)

Asia

Asia Borjigin
New Member
I am using CESM2 output from the CMIP6-PMIP4 experiments to study East Asian dust emissions during the Mid-Holocene (emidust_AERmon_CESM2_midHolocene_r1i1p1f1_gn_055101-060012.nc) and pre-industrial (emidust_AERmon_CESM2_piControl_r1i1p1f1_gn_110001-120012.nc) periods.

My preliminary analysis shows some regional discrepancies between the simulation and records. To better understand these differences, I'm seeking clarification on the dust parameterization scheme in CESM2.

1. Could you please specify the dust parameterization scheme employed in the CESM2 model for CMIP6 simulations? I am particularly interested in the dust emission process—for instance, whether it is based on factors such as wind speed threshold, surface vegetation cover, soil moisture, etc., and whether specific empirical formulas or physical models are applied.

2. If adjustments were made to the scheme across different experiments, are the dust parameterization schemes consistent between the midHolocene and piControl experiments? If not, what are the specific differences?

Any relevant information, reference documents, or model description papers you could share would be immensely helpful for my research.
 
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