Ship-based Aerosol Optical Depth Measurements in the Atlantic Ocean, Comparison with Satellite Retrievals and GOCART Model

HR: 10:50h
AN: A22B-03 [Abstracts]
TI: Ship-based Aerosol Optical Depth Measurements in the Atlantic Ocean, Comparison with Satellite Retrievals and GOCART Model
AU: * Smirnov, A
EM: asmirnov@ltpmail.gsfc.nasa.gov
AF: Goddard Earth Sciences and Technology Center, University of Maryland -Baltimore County, 5523 Research Park Drive, Suite 320, Baltimore, MD 21228 United States
AU: * Smirnov, A
EM: asmirnov@ltpmail.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, 8600 Greenbelt Rd, Greenbelt, MD 20771 United States
AU: Holben, B N
EM: bholben@pop900.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, 8600 Greenbelt Rd, Greenbelt, MD 20771 United States
AU: Sakerin, S
EM: sms@iao.ru
AF: Institute of Atmospheric Optics, Siberian Branch of Russian Academy of Sciences, 1, Akademichesky av., Tomsk, 634055 Russian Federation
AU: Kabanov, D
EM: dkab@iao.ru
AF: Institute of Atmospheric Optics, Siberian Branch of Russian Academy of Sciences, 1, Akademichesky av., Tomsk, 634055 Russian Federation
AU: Slutsker, I
EM: ilya@ltpmail.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, 8600 Greenbelt Rd, Greenbelt, MD 20771 United States
AU: Slutsker, I
EM: ilya@ltpmail.gsfc.nasa.gov
AF: Science Systems and Applications, Inc., 10210 Greenbelt Rd, Suite 600, Lanham, MD 20706 United States
AU: Remer, L A
EM: Lorraine.A.Remer@nasa.gov
AF: NASA Goddard Space Flight Center, 8600 Greenbelt Rd, Greenbelt, MD 20771 United States
AU: Kahn, R
EM: Ralph.Kahn@jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
AU: Ignatov, A
EM: Alex.Ignatov@noaa.gov
AF: NOAA/NESDIS, Office of Research and Applications, 5200 Auth Road, Camp Springs, MD 20746 United States
AU: Chin, M
EM: mian.chin@nasa.gov
AF: NASA Goddard Space Flight Center, 8600 Greenbelt Rd, Greenbelt, MD 20771 United States
AU: Diehl, T L
EM: tld@code916.gsfc.nasa.gov
AF: Goddard Earth Sciences and Technology Center, University of Maryland -Baltimore County, 5523 Research Park Drive, Suite 320, Baltimore, MD 21228 United States
AU: Diehl, T L
EM: tld@code916.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, 8600 Greenbelt Rd, Greenbelt, MD 20771 United States
AU: Mishchenko, M
EM: crmim@giss.nasa.gov
AF: NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025 United States
AU: Liu, L
EM: lliu@giss.nasa.gov
AF: NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025 United States
AU: Liu, L
EM: lliu@giss.nasa.gov
AF: Department of Earth and Environmental Sciences, Columbia University, 2880 Broadway, New York, NY 10025 United States
AU: Kucsera, T L
EM: tlk@croc.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, 8600 Greenbelt Rd, Greenbelt, MD 20771 United States
AU: Kucsera, T L
EM: tlk@croc.gsfc.nasa.gov
AF: Science Systems and Applications, Inc., 10210 Greenbelt Rd, Suite 600, Lanham, MD 20706 United States
AU: Giles, D
EM: dgiles@ltpmail.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, 8600 Greenbelt Rd, Greenbelt, MD 20771 United States
AU: Giles, D
EM: dgiles@ltpmail.gsfc.nasa.gov
AF: Science Systems and Applications, Inc., 10210 Greenbelt Rd, Suite 600, Lanham, MD 20706 United States
AU: Eck, T F
EM: teck@ltpmail.gsfc.nasa.gov
AF: Goddard Earth Sciences and Technology Center, University of Maryland -Baltimore County, 5523 Research Park Drive, Suite 320, Baltimore, MD 21228 United States
AU: Eck, T F
EM: teck@ltpmail.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, 8600 Greenbelt Rd, Greenbelt, MD 20771 United States
AU: Torres, O
EM: torres@qhearts.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, 8600 Greenbelt Rd, Greenbelt, MD 20771 United States
AU: Torres, O
EM: torres@qhearts.gsfc.nasa.gov
AF: Joint Center for Earth System Technology, University of Maryland - Baltimore County, 5523 Research Park Drive, Suite 320, Baltimore, MD 21228 United States
AU: Kopelevich, O
EM: oleg@manta.sio.rssi.ru
AF: Institute of Oceanology, Russian Academy of Sciences, 36, Nakkhimovsky pr., Moscow, 117997 Russian Federation
AB: Aerosol optical depth measurements were made in October -December 2004 aboard of R/V Akademik Sergey Vavilov. The cruise area included the Atlantic transect from North Sea to Cape Town and then a crossing in the South Atlantic to Ushuaia, Argentina. The hand-held Microtops II sunphotometer was used to acquire 314 series of measurements spanning 38 days. The sunphotometer was pre-calibrated at the NASA Goddard Space Flight Center against a master sun/sky radiometer instrument of the Aerosol Robotic Network (AERONET). The direct sun measurements were acquired in five spectral channels: 340, 440, 675, 870 and 940 nm. To retrieve aerosol optical depths we applied AERONET processing algorithm (Version 2) to the raw data. Aerosol optical depth values were close to background oceanic conditions (0.04-0.08) in the open oceanic areas not influenced by continental sources. Spectral dependence can be described as almost neutral (Angstrom parameter was less than 0.6), especially in the Southern Atlantic. A notable latitudinal variability of optical depth was observed between 15N and 21S, which was associated with the aerosol transport from Africa. Correlations between optical depth and meteorological parameters were considered and comparison between ship-based measurements and AERONET sites along the cruise track was made. Aerosol optical depths were compared to the global transport model (GOCART) simulations and satellite retrievals from MODIS, MISR, and AVHRR.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0360 Radiation: transmission and scattering
DE: 1640 Remote sensing (1855)
DE: 4548 Ocean fog
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005