MISR Radiance Anomalies Induced by Stratospheric Volcanic Aerosols
The 16-year MISR monthly radiances are analyzed in this study, showing significant enhancements of anisotropic scattering at high latitudes after several major volcanic eruptions with injection heights greater than 14 km. The anomaly of deseasonalized radiance anisotropy between MISR’s DF and DA vie...
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ftmdpi:oai:mdpi.com:/2072-4292/10/12/1875/ 2023-08-20T04:04:33+02:00 MISR Radiance Anomalies Induced by Stratospheric Volcanic Aerosols Dong Wu Tao Wang Tamás Várnai James Limbacher Ralph Kahn Ghassan Taha Jae Lee Jie Gong Tianle Yuan 2018-11-23 application/pdf https://doi.org/10.3390/rs10121875 EN eng Multidisciplinary Digital Publishing Institute Atmosphere Remote Sensing https://dx.doi.org/10.3390/rs10121875 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 10; Issue 12; Pages: 1875 radiance anisotropy volcanic aerosol direct and indirect effects shortwave radiation Text 2018 ftmdpi https://doi.org/10.3390/rs10121875 2023-07-31T21:51:44Z The 16-year MISR monthly radiances are analyzed in this study, showing significant enhancements of anisotropic scattering at high latitudes after several major volcanic eruptions with injection heights greater than 14 km. The anomaly of deseasonalized radiance anisotropy between MISR’s DF and DA views (70.5° forward and aft) is largest in the blue band with amplitudes amounting to 5–15% of the mean radiance. The anomalous radiance anisotropy is a manifestation of the stronger forward scattering of reflected sunlight due to the direct and indirect effects of stratospheric volcanic aerosols (SVAs). The perturbations of MISR radiance anisotropy from the Kasatochi (August 2008), Sarychev (June 2009), Nabro (June 2011) and Calbuco (April 2015) eruptions are consistent with the poleward transported SVAs observed by CALIOP and OMPS-LP. In a particular scene over the Arctic Ocean, the stratospheric aerosol mid-visible optical depth can reach as high as 0.2–0.5. The enhanced global forward scattering by SVAs has important implications for the shortwave radiation budget. Text Arctic Arctic Ocean MDPI Open Access Publishing Arctic Arctic Ocean Remote Sensing 10 12 1875 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
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ftmdpi |
language |
English |
topic |
radiance anisotropy volcanic aerosol direct and indirect effects shortwave radiation |
spellingShingle |
radiance anisotropy volcanic aerosol direct and indirect effects shortwave radiation Dong Wu Tao Wang Tamás Várnai James Limbacher Ralph Kahn Ghassan Taha Jae Lee Jie Gong Tianle Yuan MISR Radiance Anomalies Induced by Stratospheric Volcanic Aerosols |
topic_facet |
radiance anisotropy volcanic aerosol direct and indirect effects shortwave radiation |
description |
The 16-year MISR monthly radiances are analyzed in this study, showing significant enhancements of anisotropic scattering at high latitudes after several major volcanic eruptions with injection heights greater than 14 km. The anomaly of deseasonalized radiance anisotropy between MISR’s DF and DA views (70.5° forward and aft) is largest in the blue band with amplitudes amounting to 5–15% of the mean radiance. The anomalous radiance anisotropy is a manifestation of the stronger forward scattering of reflected sunlight due to the direct and indirect effects of stratospheric volcanic aerosols (SVAs). The perturbations of MISR radiance anisotropy from the Kasatochi (August 2008), Sarychev (June 2009), Nabro (June 2011) and Calbuco (April 2015) eruptions are consistent with the poleward transported SVAs observed by CALIOP and OMPS-LP. In a particular scene over the Arctic Ocean, the stratospheric aerosol mid-visible optical depth can reach as high as 0.2–0.5. The enhanced global forward scattering by SVAs has important implications for the shortwave radiation budget. |
format |
Text |
author |
Dong Wu Tao Wang Tamás Várnai James Limbacher Ralph Kahn Ghassan Taha Jae Lee Jie Gong Tianle Yuan |
author_facet |
Dong Wu Tao Wang Tamás Várnai James Limbacher Ralph Kahn Ghassan Taha Jae Lee Jie Gong Tianle Yuan |
author_sort |
Dong Wu |
title |
MISR Radiance Anomalies Induced by Stratospheric Volcanic Aerosols |
title_short |
MISR Radiance Anomalies Induced by Stratospheric Volcanic Aerosols |
title_full |
MISR Radiance Anomalies Induced by Stratospheric Volcanic Aerosols |
title_fullStr |
MISR Radiance Anomalies Induced by Stratospheric Volcanic Aerosols |
title_full_unstemmed |
MISR Radiance Anomalies Induced by Stratospheric Volcanic Aerosols |
title_sort |
misr radiance anomalies induced by stratospheric volcanic aerosols |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2018 |
url |
https://doi.org/10.3390/rs10121875 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_source |
Remote Sensing; Volume 10; Issue 12; Pages: 1875 |
op_relation |
Atmosphere Remote Sensing https://dx.doi.org/10.3390/rs10121875 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs10121875 |
container_title |
Remote Sensing |
container_volume |
10 |
container_issue |
12 |
container_start_page |
1875 |
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1774714933303312384 |