HR: 1340h
AN: A33A-0854    [Abstracts]
TI: Analysis of dust and marine aerosol optical depth spectral-curvature information in the UV to SWIR (Short Wave Infrared) wavelength regions.
AU: * O'Neill, N T
EM: norm.oneill@USherbrooke.ca
AF: CARTEL, Université de Sherbrooke, 2500 Boul. de l'Universite, Sherbrooke, QUE J1K2R1 Canada
AU: Smirnov, A
EM: asmirnov@aeronet.gsfc.nasa.gov
AF: Goddard Earth Sciences & Technology Center, UMBC, Code 614.4, NASA/Goddard Space Flight Center, Greenbelt, MD 20771 United States
AU: Eck, T F
EM: teck@ltpmail.gsfc.nasa.gov
AF: Goddard Earth Sciences & Technology Center, UMBC, Code 614.4, NASA/Goddard Space Flight Center, 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
AB: Traditional sunphotometry in the UV, visible and very NIR (Near Infrared) spectral regions is weighted, in terms of spectral information content, towards sub-micron (fine mode) particles. Sunphotometry in the NIR and SWIR increases the diversity and information content of spectral aerosol optical depth (AOD) measurements for supermicron (coarse mode) particles. Two data sets representing dust aerosols from the UAE (United Arab Emirates) region and marine aerosols from the northern, tropical and southern Atlantic Ocean were analyzed in terms of their spectral curvature diversity and information content. The former data set was acquired using NIR-enhanced CIMEL sunphotometers (340, 340, 380, 440, 500, 670, 870, 1020, 1640 nm) as part of the August to October, 2004 UAE2 field campaign while the latter data set was acquired using an automated Russian UV to SWIR SP-5 sunphotometer (339, 423, 438, 484, 552, 633, 677, 777, 869, 1241, 1560, 2148, 4000 nm) as part of a October/December 2004 cruise campaign in the northern, tropical and south Atlantic Ocean. A Microtops hand-held sunphotometer was also employed to acquire VIS to NIR AOD spectra during the latter field campaign. Results will be presented in terms of robust micro-physical and spectral curvature parameters which characterize super-micron aerosols and, in a more general sense, in terms of what universal/fundamental optical inferences can be drawn from the two disperse data sets.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 4801 Aerosols (0305, 4906)
DE: 4906 Aerosols (0305, 4801)
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005