Use USTAR read from GEOS instead of calculating from U10M and V10M

[yuanjianz]

Name and Institution (Required)

Name: Yuanjian Zhang Institution: WashU

Describe the update

Use USTAR friction velocity from meteorology instead of calculating from wind at 10m. Comment out unused codes after this update but keep them following tradition.

Expected changes

Friction velocity is estimated to increase by 3 times. Dust emission is estimated to increase by 30 times, since dust emission is proportional to cube of friction velocity. Therefore, dust scaling factor needs to be recalculated. Following Meng, J.,et al, 2021, global annual dust emission for 2016 is scaled to 2000Tg.

Scaling factor GEOS-IT: 2.6421e-05 MERRA-2: 3.8891e-05 GEOS-FP: 3.0655e-05

Related Github Issue

#278