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AMT | Articles | Volume 11, issue 6
Atmos. Meas. Tech., 11, 3205–3219, 2018
https://doi.org/10.5194/amt-11-3205-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Atmos. Meas. Tech., 11, 3205–3219, 2018
https://doi.org/10.5194/amt-11-3205-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 04 Jun 2018

Research article | 04 Jun 2018

Correcting for trace gas absorption when retrieving aerosol optical depth from satellite observations of reflected shortwave radiation

Falguni Patadia et al.

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Ahmad, Z., and Fraser, R. S.: An iterative radiative transfer code for ocean-atmosphere systems, J. Atmos. Sci., 39, 656–665, https://doi.org/https://doi.org/10.1175/1520-0469(1982)039<0656:AIRTCF>2.0.CO;2, 1982. 
Ahmad, Z., McClain, C., Herman, J., Franz, B., Kwiatkowska, E., Robinson, W., Bucsela, E., and Tzortziou, M.: Atmospheric correction for NO2 absorption in retrieving water-leaving reflectances from the SeaWiFS and MODIS measurements, Appl. Opt., 46, 6504–6512, 2007. 
Alvarado, M. J., Payne, V. H., Mlawer, E. J., Uymin, G., Shephard, M. W., Cady-Pereira, K. E., Delamere, J. S., and Moncet, J.-L.: Performance of the Line-By-Line Radiative Transfer Model (LBLRTM) for temperature, water vapor, and trace gas retrievals: recent updates evaluated with IASI case studies, Atmos. Chem. Phys., 13, 6687–6711, https://doi.org/10.5194/acp-13-6687-2013, 2013. 
Barnes, W. L., Pagano, T. S., and Salomonson, V. V.: Pre-launch characteristics of the Moderate Resolution Imaging Spectroradiometer (MODIS) on EOS AM-1, IEEE T. Geosci. Remote, 36, 1088–1100, 1998. 
Bevan, S. L., North, P. R. J., Los, S. O., and Grey, W. M. F.: A global dataset of atmospheric aerosol optical depth and surface reflectance from AATSR, Remote Sens. Environ., 116, 199–210, https://doi.org/10.1016/j.rse.2011.05.024, 2012. 
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Short summary
Satellite-measured radiance from an Earth scene comprises light scattered and absorbed by gases, clouds and aerosols in the atmosphere and by the Earth surface. To retrieve aerosol information, the signal from clouds, gases and the surface must be separated from the aerosol signal. This paper highlights the gas absorption correction method used by the MODIS dark-target aerosol retrieval algorithm and demonstrates that aerosol retrieval accuracy depends on accurate gas absorption correction.
Satellite-measured radiance from an Earth scene comprises light scattered and absorbed by gases,...
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