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Aerosol optical depth
Posted: Mon Nov 24, 2025 11:05 am America/New_York
by ghufran.zuhair78
I need to information about Aerosol Optical Depth (AOD) scale classification obtained from OMI above urban cities: clear, moderate, and severe weather conditions for wavelengths 354,388, and 500nm supporting with references
Re: Aerosol optical depth
Posted: Tue Nov 25, 2025 10:18 am America/New_York
by emilyz
In the OMI User Guide for OMERUVd:
https://docserver.gesdisc.eosdis.nasa.gov/repository/Mission/OMI/3.3_ScienceDataProductDocumentation/3.3.2_ProductRequirements_Designs/README.OMI_DUG.pdf
on page 30 is this information:
The level 2 product contains diagnostic information about the quality of the fit. Typical values for the retrieval error of the AOD obtained using the non-linear fitting routine are below 0.03. This error concerns the AOD retrieval for a given aerosol model and hence does not include error correlations of AOD and microphysical aerosol parameters or the aerosol height. The standard deviation of the AOD values of the aerosol models with a Root Mean Square (RMS) error lower than a given threshold is below 0.11 for 95% of the cases. The standard deviation of the Single Scattering Albedo (SSA) values of the aerosol models with an RMS lower than a given threshold is below 0.1 in 95% of the cases.
You can also try searching for publications about OMI aerosol optical depth (AOD) scale threshold above urban areas
https://scholar.google.com/scholar?hl=en&as_sdt=0%2C21&as_vis=1&q=OMI+aerosol+optical+depth+%28AOD%29+scale+threshold+above+urban+areas&btnG=
If you have further questions, please post them here.