Satellite and ground-based study of optical properties of 1997 Indonesian Forest Fire aerosols

dc.contributor.authorNakajima, Teruyuki
dc.contributor.authorHigurashi, Akiko
dc.contributor.authorTakeuchi, Nobuo
dc.contributor.authorHerman, Jay
dc.description.abstractOptical properties of biomass burning aerosols in the event of Indonesian forest fires in 1997 were studied by groundbased sky radiometry and satellite remote sensing with AVHRR and TOMS radiometers. The AVHRR-derived optical thickness distribution agreed with the distribution of TOMS-derived UV-absorbing aerosol index and with the optical thickness measured by sky radiometry and sunphotometry. The single scattering albedo of aerosols was fairly constant as 0.9 in the September–October period. Relationship between Ångström turbidity factor and exponent supported the polydispersion consisted of aged small particles. This observation was consistent with the fact that the retrieved volume size distribution by sky radiometry has a distinct accumulation mode with a peak radius of 0.25 µm. Those optical properties of smoke aerosols seem to reflect the specific chemical structure of Indonesian forest fire aerosols, i.e., a mixture of carbonaceous and sulfate particles.en_US
dc.description.sponsorshipT. D. Edwards, NASA Langley Center is gratefully acknowledged for her comments on the total emission of aero- sols. The authors are grateful to A. Harashima of the National Institute for Environmental Studies and K. Furusawa of Japan Marine Biological Institute for their conducting shipborne sunphotometer measurements, and to the stuff of Centre for Remote Imaging, Sensing and Processing, National University of Singapore (NUS), especially H. Lim, S. Liew, and V. Khoo Hock Soon for their support of sky radiometer measurements in Singapore. We thank M. Yamano and H. Kimura of CCSR for data analyses and T. Takemura and S. Kuroda for supporting measurements. This research was supported by the Grant-in-Aid for Scientific Research (No. 09041197) of the Japanese Ministry of Education, Science, Sports and Cultureen_US
dc.format.extent4 pagesen_US
dc.genrejournal articlesen_US
dc.identifier.citationNakajima, Teruyuki, et al. "Satellite and ground-based study of optical properties of 1997 Indonesian Forest Fire aerosols." Geophysical Research Letters 26, no. 16 (15 August, 1999): 2421-2424.
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC GESTAR II Collection
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology (JCET)
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.titleSatellite and ground-based study of optical properties of 1997 Indonesian Forest Fire aerosolsen_US
dc.title.alternativeSatellite and ground-based study of 1997 Indonesian forest fire aerosolsen_US


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