An improved method for retrieving nighttime aerosol optical thickness from the VIIRS Day/Night Band
Using Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band (DNB) data, a method, dubbed the "variance method", is developed for retrieving nighttime aerosol optical thickness (τ) values through the examination of the dispersion of radiance values above an artificial light sourc...
Published in: | Atmospheric Measurement Techniques |
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Copernicus Publications
2015
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00014710 2023-05-15T13:06:17+02:00 An improved method for retrieving nighttime aerosol optical thickness from the VIIRS Day/Night Band McHardy, T. M. Zhang, J. Reid, J. S. Miller, S. D. Hyer, E. J. Kuehn, R. E. 2015-11 electronic https://doi.org/10.5194/amt-8-4773-2015 https://noa.gwlb.de/receive/cop_mods_00014710 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014665/amt-8-4773-2015.pdf https://amt.copernicus.org/articles/8/4773/2015/amt-8-4773-2015.pdf eng eng Copernicus Publications Atmospheric Measurement Techniques -- http://www.bibliothek.uni-regensburg.de/ezeit/?2505596 -- http://www.atmospheric-measurement-techniques.net/ -- 1867-8548 https://doi.org/10.5194/amt-8-4773-2015 https://noa.gwlb.de/receive/cop_mods_00014710 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014665/amt-8-4773-2015.pdf https://amt.copernicus.org/articles/8/4773/2015/amt-8-4773-2015.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2015 ftnonlinearchiv https://doi.org/10.5194/amt-8-4773-2015 2022-02-08T22:54:57Z Using Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band (DNB) data, a method, dubbed the "variance method", is developed for retrieving nighttime aerosol optical thickness (τ) values through the examination of the dispersion of radiance values above an artificial light source. Based on the improvement of a previous algorithm, this updated method derives a semi-quantitative indicator of nighttime τ using artificial light sources. Nighttime τ retrievals from the newly developed method are inter-compared with an interpolated value from late afternoon and early morning ground observations from four AErosol RObotic NETwork (AERONET) sites as well as column-integrated τ from one High Spectral Resolution Lidar (HSRL) site at Huntsville, AL, during the NASA Studies of Emissions and Atmospheric Composition, Clouds and Climate Coupling by Regional Surveys (SEAC4RS) campaign, providing full diel coverage. Sensitivity studies are performed to examine the effects of lunar illumination on VIIRS τ retrievals made via the variance method, revealing that lunar contamination may have a smaller impact than previously thought; however, the small sample size of this study limits the conclusiveness thus far. VIIRS τ retrievals yield a coefficient of determination (r2) of 0.60 and a root-mean-squared error (RMSE) of 0.18 when compared against straddling daytime-averaged AERONET τ values. Preliminary results suggest that artificial light sources can be used for estimating regional and global nighttime aerosol distributions in the future. Article in Journal/Newspaper Aerosol Robotic Network Niedersächsisches Online-Archiv NOA Atmospheric Measurement Techniques 8 11 4773 4783 |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung McHardy, T. M. Zhang, J. Reid, J. S. Miller, S. D. Hyer, E. J. Kuehn, R. E. An improved method for retrieving nighttime aerosol optical thickness from the VIIRS Day/Night Band |
topic_facet |
article Verlagsveröffentlichung |
description |
Using Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band (DNB) data, a method, dubbed the "variance method", is developed for retrieving nighttime aerosol optical thickness (τ) values through the examination of the dispersion of radiance values above an artificial light source. Based on the improvement of a previous algorithm, this updated method derives a semi-quantitative indicator of nighttime τ using artificial light sources. Nighttime τ retrievals from the newly developed method are inter-compared with an interpolated value from late afternoon and early morning ground observations from four AErosol RObotic NETwork (AERONET) sites as well as column-integrated τ from one High Spectral Resolution Lidar (HSRL) site at Huntsville, AL, during the NASA Studies of Emissions and Atmospheric Composition, Clouds and Climate Coupling by Regional Surveys (SEAC4RS) campaign, providing full diel coverage. Sensitivity studies are performed to examine the effects of lunar illumination on VIIRS τ retrievals made via the variance method, revealing that lunar contamination may have a smaller impact than previously thought; however, the small sample size of this study limits the conclusiveness thus far. VIIRS τ retrievals yield a coefficient of determination (r2) of 0.60 and a root-mean-squared error (RMSE) of 0.18 when compared against straddling daytime-averaged AERONET τ values. Preliminary results suggest that artificial light sources can be used for estimating regional and global nighttime aerosol distributions in the future. |
format |
Article in Journal/Newspaper |
author |
McHardy, T. M. Zhang, J. Reid, J. S. Miller, S. D. Hyer, E. J. Kuehn, R. E. |
author_facet |
McHardy, T. M. Zhang, J. Reid, J. S. Miller, S. D. Hyer, E. J. Kuehn, R. E. |
author_sort |
McHardy, T. M. |
title |
An improved method for retrieving nighttime aerosol optical thickness from the VIIRS Day/Night Band |
title_short |
An improved method for retrieving nighttime aerosol optical thickness from the VIIRS Day/Night Band |
title_full |
An improved method for retrieving nighttime aerosol optical thickness from the VIIRS Day/Night Band |
title_fullStr |
An improved method for retrieving nighttime aerosol optical thickness from the VIIRS Day/Night Band |
title_full_unstemmed |
An improved method for retrieving nighttime aerosol optical thickness from the VIIRS Day/Night Band |
title_sort |
improved method for retrieving nighttime aerosol optical thickness from the viirs day/night band |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/amt-8-4773-2015 https://noa.gwlb.de/receive/cop_mods_00014710 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014665/amt-8-4773-2015.pdf https://amt.copernicus.org/articles/8/4773/2015/amt-8-4773-2015.pdf |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_relation |
Atmospheric Measurement Techniques -- http://www.bibliothek.uni-regensburg.de/ezeit/?2505596 -- http://www.atmospheric-measurement-techniques.net/ -- 1867-8548 https://doi.org/10.5194/amt-8-4773-2015 https://noa.gwlb.de/receive/cop_mods_00014710 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014665/amt-8-4773-2015.pdf https://amt.copernicus.org/articles/8/4773/2015/amt-8-4773-2015.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/amt-8-4773-2015 |
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Atmospheric Measurement Techniques |
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11 |
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4773 |
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4783 |
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