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MISR Radiance Anomalies Induced by Stratospheric Volcanic Aerosols

NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20740, USA
Joint Center for Earth Systems Technology, University of Maryland, Baltimore County, MD 21250, USA
Science Systems and Applications, Inc., Lanham, MD 20706, USA
Universities Space Research Association, Columbia, MD 21046, USA
Author to whom correspondence should be addressed.
Remote Sens. 2018, 10(12), 1875;
Received: 7 October 2018 / Revised: 15 November 2018 / Accepted: 20 November 2018 / Published: 23 November 2018
(This article belongs to the Special Issue MISR)
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. View Full-Text
Keywords: radiance anisotropy; volcanic aerosol direct and indirect effects; shortwave radiation radiance anisotropy; volcanic aerosol direct and indirect effects; shortwave radiation
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MDPI and ACS Style

Wu, D.L.; Wang, T.; Várnai, T.; Limbacher, J.A.; Kahn, R.A.; Taha, G.; Lee, J.N.; Gong, J.; Yuan, T. MISR Radiance Anomalies Induced by Stratospheric Volcanic Aerosols. Remote Sens. 2018, 10, 1875.

AMA Style

Wu DL, Wang T, Várnai T, Limbacher JA, Kahn RA, Taha G, Lee JN, Gong J, Yuan T. MISR Radiance Anomalies Induced by Stratospheric Volcanic Aerosols. Remote Sensing. 2018; 10(12):1875.

Chicago/Turabian Style

Wu, Dong L., Tao Wang, Tamás Várnai, James A. Limbacher, Ralph A. Kahn, Ghassan Taha, Jae N. Lee, Jie Gong, and Tianle Yuan. 2018. "MISR Radiance Anomalies Induced by Stratospheric Volcanic Aerosols" Remote Sensing 10, no. 12: 1875.

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