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28 October 2022 Two decades of ground-based multisensor AOD measurements at US continental site: wavelength extension
Evgueni I. Kassianov, Gabriel Gibler, Jennifer Comstock, Connor Flynn, Jaime Barnard
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Proceedings Volume PC12265, Remote Sensing of Clouds and the Atmosphere XXVII; PC1226502 (2022) https://doi.org/10.1117/12.2638557
Event: SPIE Remote Sensing, 2022, Berlin, Germany
Abstract
Knowledge of the spectral behavior of aerosol optical depth (AOD) over the solar spectrum is required for realistic estimates of aerosol radiative forcing. To describe this behavior over an extended period, individual AOD records provided by several co-located ground-based instruments with different design and operation characteristics need to be combined. There are three main challenges associated with such combining; these stem from differences between the instruments in terms of: (1) data quality, (2) continuity, and (3) the measurement wavelengths of each instrument . The first two challenges have been addressed successfully using our approach (Kassianov et al., 2021). Here we demonstrate how the third challenge can be addressed to generate combined AODs at different wavelengths. In particular, we consider generation of the combined AODs at five wavelengths (415, 500, 615, 673, 870 nm) for a 21-year period (1997-2018) using individual AOD records obtained from four instruments deployed at a US continental site. We also discuss wavelength-dependent uncertainties of the generated AODs and future applications of this extended approach for different sets of wavelengths and locations. Kassianov, E., Cromwell, E., Monroe, J. et al. Harmonized and high-quality datasets of aerosol optical depth at a US continental site, 1997–2018. Sci Data 8, 82 (2021). https://doi.org/10.1038/s41597-021-00866-2
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Evgueni I. Kassianov, Gabriel Gibler, Jennifer Comstock, Connor Flynn, and Jaime Barnard "Two decades of ground-based multisensor AOD measurements at US continental site: wavelength extension", Proc. SPIE PC12265, Remote Sensing of Clouds and the Atmosphere XXVII, PC1226502 (28 October 2022); https://doi.org/10.1117/12.2638557
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KEYWORDS
Aerosols
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