ANALYSIS OF AERONET EXTENDED WAVELENGTH RETRIEVALS OF AEROSOL ABSORPTION PARAMETERS INCLUDING 380 NM AND 500 NM FOR DETECTION OF BROWN CARBON IN BIOMASS BURNING AND IRON OXIDES IN DESERT DUST
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Type of Work4 pages
conference papers and proceedings
Citation of Original PublicationT. F. Eck et al., "Analysis of Aeronet Extended Wavelength Retrievals of Aerosol Absorption Parameters Including 380 nm and 500 nm for Detection of Brown Carbon in Biomass Burning and Iron Oxides in Desert Dust," 2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021, pp. 7115-7118, doi: 10.1109/IGARSS47720.2021.9553387.
RightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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To investigate near UV aerosol absorbers, such as iron in mineral dust and brown carbon from biomass burning, AERONET spectral imaginary refractive index and size distributions retrievals were performed with the input of additional wavelength data. This includes adding both measured spectral AOD and sky radiances at 380 nm and 500 nm to the four channels (440, 675, 870 and 1020 nm) that are used in the standard retrieval data product. The vector radiative transfer code in the AERONET Version 3 retrievals enabled more accurate computations in the ultraviolet region (380 nm). Calibration of the 380 nm channel radiances was done by the vicarious method since the integrating sphere radiance source that is used for all other wavelengths does not produce sufficient energy at 380 nm. Spectral single scattering albedo, imaginary refractive indices and aerosol size distributions from these six wavelength retrievals are compared to the standard four wavelength retrieval values.
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Except where otherwise noted, this item's license is described as This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.