Microphysical and radiative evolution of aerosol plumes over the tropical North Atlantic Ocean
[1] Over the tropical North Atlantic Ocean in the summer, plumes of aerosol extend from Saharan Africa to the Caribbean. The microphysical and radiative evolution of such plumes is studied using a Lagrangian column model and measurements obtained near the west coast of Africa (during the second Aero...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.143.4359 2023-05-15T17:30:23+02:00 Microphysical and radiative evolution of aerosol plumes over the tropical North Atlantic Ocean Timothy J. Garrett Lynn M. Russell V. Ramaswamy Steven F. Maria Barry J. Huebert The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.143.4359 http://www.gfdl.noaa.gov/reference/bibliography/2003/garrett0301.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.143.4359 http://www.gfdl.noaa.gov/reference/bibliography/2003/garrett0301.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.gfdl.noaa.gov/reference/bibliography/2003/garrett0301.pdf text ftciteseerx 2016-01-07T15:02:24Z [1] Over the tropical North Atlantic Ocean in the summer, plumes of aerosol extend from Saharan Africa to the Caribbean. The microphysical and radiative evolution of such plumes is studied using a Lagrangian column model and measurements obtained near the west coast of Africa (during the second Aerosol Characterization Experiment [ACE-2]) and the Caribbean Sea (during the Passing Efficiency of the Low Turbulence Inlet [PELTI] experiment). Mass and scattering in the plumes can be separated into two layers that overlay one another over much of the Atlantic Ocean. Mineral dust dominates in the lower free troposphere, and sea-salt aerosol dominates in the boundary layer. Carbonaceous, sulfate, and nitrate (CSN) aerosols are a minor component of mass but contribute significantly to total column optical depth. Combined, CSN aerosols and sea-salt contribute to more than half of total aerosol clear-sky shortwave forcing associated with such plumes. Satellite and model data suggest that the reduction of plume forcing between the African coastline and the Caribbean is less than 20%. The reduction is due principally to settling of large dust particles and atmospheric subsidence; however, the reduction of forcing remains small because (a) boundary layer trade winds provide a Text North Atlantic Unknown |
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description |
[1] Over the tropical North Atlantic Ocean in the summer, plumes of aerosol extend from Saharan Africa to the Caribbean. The microphysical and radiative evolution of such plumes is studied using a Lagrangian column model and measurements obtained near the west coast of Africa (during the second Aerosol Characterization Experiment [ACE-2]) and the Caribbean Sea (during the Passing Efficiency of the Low Turbulence Inlet [PELTI] experiment). Mass and scattering in the plumes can be separated into two layers that overlay one another over much of the Atlantic Ocean. Mineral dust dominates in the lower free troposphere, and sea-salt aerosol dominates in the boundary layer. Carbonaceous, sulfate, and nitrate (CSN) aerosols are a minor component of mass but contribute significantly to total column optical depth. Combined, CSN aerosols and sea-salt contribute to more than half of total aerosol clear-sky shortwave forcing associated with such plumes. Satellite and model data suggest that the reduction of plume forcing between the African coastline and the Caribbean is less than 20%. The reduction is due principally to settling of large dust particles and atmospheric subsidence; however, the reduction of forcing remains small because (a) boundary layer trade winds provide a |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Timothy J. Garrett Lynn M. Russell V. Ramaswamy Steven F. Maria Barry J. Huebert |
spellingShingle |
Timothy J. Garrett Lynn M. Russell V. Ramaswamy Steven F. Maria Barry J. Huebert Microphysical and radiative evolution of aerosol plumes over the tropical North Atlantic Ocean |
author_facet |
Timothy J. Garrett Lynn M. Russell V. Ramaswamy Steven F. Maria Barry J. Huebert |
author_sort |
Timothy J. Garrett |
title |
Microphysical and radiative evolution of aerosol plumes over the tropical North Atlantic Ocean |
title_short |
Microphysical and radiative evolution of aerosol plumes over the tropical North Atlantic Ocean |
title_full |
Microphysical and radiative evolution of aerosol plumes over the tropical North Atlantic Ocean |
title_fullStr |
Microphysical and radiative evolution of aerosol plumes over the tropical North Atlantic Ocean |
title_full_unstemmed |
Microphysical and radiative evolution of aerosol plumes over the tropical North Atlantic Ocean |
title_sort |
microphysical and radiative evolution of aerosol plumes over the tropical north atlantic ocean |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.143.4359 http://www.gfdl.noaa.gov/reference/bibliography/2003/garrett0301.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
http://www.gfdl.noaa.gov/reference/bibliography/2003/garrett0301.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.143.4359 http://www.gfdl.noaa.gov/reference/bibliography/2003/garrett0301.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766126743579525120 |