Nowcasting Applications of Geostationary Satellite Hourly Surface PM_2.5 Data.

ABSTRACT: The mass concentration of fine particulate matter (PM_2.5; diameters less than 2.5 μm) estimated from geostationary satellite aerosol optical depth (AOD) data can supplement the network of ground monitors with high temporal (hourly) resolution. Estimates of PM_2.5 over the United States (US) were derived from NOAA's operational geostationary satellites Advanced Baseline Imager (ABI) AOD data using a geographically weighted regression with hourly and daily temporal resolution. Validation versus ground observations shows a mean bias of -21.4% and -15.3% for hourly and daily PM_2.5 estimates, respectively, for concentrations ranging from 0 to 1000 μg/m³. Because satellites only observe AOD in the daytime, the relation between observed daytime PM_2.

SUBMITTER: Zhang H 

PROVIDER: S-EPMC10428291 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature