Atmospheric Chemistry and Physics
www.atmos-chem-phys.net
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8
2
2008
10.5194/acp-8-341-2008
http://www.atmos-chem-phys.net/8/341/2008/
http://www.atmos-chem-phys.net/8/341/2008/acp-8-341-2008.html
http://www.atmos-chem-phys.net/8/341/2008/acp-8-341-2008.pdf
341
350
2008-01-28
First retrieval of tropospheric aerosol profiles using MAX-DOAS and comparison with lidar and sky radiometer measurements
H. Irie
irie@jamstec.go.jp
Y. Kanaya
H. Akimoto
H. Iwabuchi
A. Shimizu
K. Aoki
Frontier Research Center for Global Change, Japan Agency for Marine-Earth Science and Technology, 3173-25 Showa-machi, Kanazawa-ku, Yokohama, Kanagawa 236-0001, Japan
National Institute for Environmental Studies, 16-2, Onogawa, Tsukuba, Ibaraki 305-8506, Japan
Department of Earth Science, Faculty of Sciences, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
Ground-based Multi-Axis Differential Optical Absorption Spectroscopy
(MAX-DOAS) measurements were performed at Tsukuba, Japan (36.1° N,
140.1° E), in November–December 2006. By analyzing the measured spectra
of scattered sunlight with DOAS and optimal estimation methods, we first
retrieve the aerosol optical depth (τ) and the vertical profile of the
aerosol extinction coefficient (<i>k</i>) at 476 nm in the lower troposphere. These
retrieved quantities are characterized through comparisons with coincident
lidar and sky radiometer measurements. The retrieved <i>k</i> values for layers of
0–1 and 1–2 km agree with lidar data to within 30% and 60%,
respectively, for most cases, including partly cloudy conditions. Results
similar to <i>k</i> at 0–1 km are obtained for the retrieved τ values,
demonstrating that MAX-DOAS provides a new, unique aerosol dataset in the
lower troposphere.
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