Dust Source Attribution (DUSA)

This experiment will investigate the impact of dust from the prominent dust source regions, and the source-receptor relationships over land and remote ocean regions. In addition to the previous AeroCom experiments which focus on the regions where dust amount is significant, this proposed study will also analyze the source-receptor relationships over more extended regions including Arctic, Antarctic, Tibetan Plateau, and oceanic areas. In addition, this multi-model experiment also tackles two areas that have not been examined before in AeroCom: the change of dust particle sizes during the long-range transport, and the dust optical depth at the thermal infrared (10 um) wavelength that is mostly sensitive to dust aerosols, which can be compare to the commonly used value at the mid-visible wavelength. Details about the proposed experiment are described here AeroCom_DUSA_proposal_20191204.pdf. The model output variables are listed here AEROCOM3_DUSA_diagnostics_20191202.xlsx, and the file of tagged region domains is provided in the netcdf file (0.5 deg) here dusrc_tagmap.x720_y360.nc.

30 June 2020
Dongchul Kim, dongchul.kim@nasa.gov