edu.ucar.opensky::articles:15362 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T15:02:17.970005 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7n017kx Retrieval of aerosol single scattering albedo at ultraviolet wavelengths at the T1 site during MILAGRO 2009-08-12T00:00:00Z publication https://n2t.org/ark:/85065/d7n017kx https://doi.org/10.5194/acp-9-5813-2009 Corr, C. author Krotkov, N. author Madronich, Sasha author Slusser, J. author Holben, B. author Gao, W. author Flynn, J. author Lefer, B. author Kreidenweis, S. author UCAR/NCAR - Library publisher Surface measurements of direct and diffuse voltages at UV wavelengths were made at the T1 site during the MILAGRO (Megacity Initiative: Local and Global Research Observations) field campaign in March 2006, using a multifilter rotating shadowband radiometer (UV-MFRSR). We used the MFRSR data, together with measurements from a co-located CIMEL Sun photometer at the site operating as part of the AERONET network, to deduce aerosol single scattering albedo (ω) at 368 and 332 nm for four cloud-free days during the study. Our retrievals suggest that T1 aerosols with aerosol extinction optical depth τ₃₆&#8328>0.1 that are influenced by Mexico City emissions, blowing dust, and biomass burning, are characterized by low ω₃₆&#8328=0.73-0.85 and ω₃₃&#8322=0.70-0.86, with small or no spectral variation of ω between 368 and 332 nm. Our findings are consistent with other published estimates of ω for Mexico City aerosols, including those that suggest that the absorption attributable to these aerosols is enhanced at UV wavelengths relative to visible wavelengths. We also demonstrate, via sensitivity tests, the importance of accurate τ and surface albedo measurements in ω retrievals at UV wavelengths. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License None eng geoscientificInformation