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Aerosol Optical Depth Distribution in Extratropical Cyclones over the Northern Hemisphere OceansUsing Moderate Resolution Imaging Spectroradiometer and an extratropical cyclone database,the climatological distribution of aerosol optical depth (AOD) in extratropical cyclones is explored based solely on observations. Cyclone-centered composites of aerosol optical depth are constructed for the Northern Hemisphere mid-latitude ocean regions, and their seasonal variations are examined. These composites are found to be qualitatively stable when the impact of clouds and surface insolation or brightness is tested. The larger AODs occur in spring and summer and are preferentially found in the warm frontal and in the post-cold frontal regions in all seasons. The fine mode aerosols dominate the cold sector AODs, but the coarse mode aerosols display large AODs in the warm sector. These differences between the aerosol modes are related to the varying source regions of the aerosols and could potentially have different impacts on cloud and precipitation within the cyclones.
Document ID
20160012702
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Naud, Catherine M. (Columbia Univ. New York, NY, United States)
Posselt, Derek J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
van den Heever, Susan C. (Colorado State Univ. Fort Collins, CO, United States)
Date Acquired
October 27, 2016
Publication Date
October 11, 2016
Publication Information
Publication: Geophysical Research Letters
Volume: 43
Issue: 19
ISSN: 0094-8276
Subject Category
Meteorology and Climatology
Geophysics
Report/Patent Number
GSFC-E-DAA-TN36384
Funding Number(s)
CONTRACT_GRANT: NNX14AB99A
CONTRACT_GRANT: NNX13AQ33G
Distribution Limits
Public
Copyright
Other
Keywords
MODIS
extratropical cyclones
aerosol optical depth