TEMPO Aerosol Detection Product

With the launch of TEMPO (Tropospheric Emissions: Monitoring Pollution) on April 07, 2023, the hourly observation of air pollutant from space over North America becomes reality. TEMPO, a UV-visible spectrometer instrument, makes hourly measurements with a wavelength coverage from 290-490 + 540-740 nm and a spatial resolution of about 4 x 7 km. The major objective of TEMPO is to provide trace gas measurements, such as NO2, O3, H2CO, C2H2O2, SO2 etc., however, aerosols, as a compound of all the pollutants, is an important information regarding to air quality. At NOAA, we plan to generate a suite of aerosol product, including aerosol optical depth, single scattering albedo, aerosol layer height, absorbing aerosol index, and aerosol type (mainly, smoke and dust), from TEMPO observations and also synergy with ABI (Advanced Baseline Imager) observations from both GOES-East and GOES-West.In the paper, we focus on the approach of developing of aerosol detection product, including UV absorbing aerosol index (354nm/388nm), visible aerosol index (410/440 nm), smoke/dust mask. Both UV and Visible absorbing aerosol are directly derived from the observations from TEMPO. For smoke/dust mask, we applied NOAA Enterprise Aerosol detection algorithm, by synergistic combining UV-Viable observations from TEMPO with shortwave IR and IR observations from GOES-R ABI. The approaches are first demonstrated by using observations from GEMS, a sister instrument of TEMPO and AHI, a sister instrument of ABI. It shows that the synergistic approach can detect plumes from Asian dust storm and smoke/smog blobs over China. The results are validated by using the ground-based AERONET observations and CALIPOS Vertical Feature MASK product. In addition, preliminary results from TEMPO observations are also shown, including both smoke and dust events, ranging from a large scale of the transported smoke plumes to a small scale smoke plumes from the local fire events. It shows that the synergistic approach performs similarly well on the combined TEMPO with ABI observations. Disclaimer: The scientific results and conclusions, as well as any views or opinions expressed herein, are those of the author(s) and do not necessarily reflect those of NOAA or the Department of Commerce.