TY - JOUR
T1 - Data assimilation of himawari-8 aerosol observations
T2 - Asian dust forecast in June 2015
AU - Sekiyama, Tsuyoshi Thomas
AU - Yumimoto, Keiya
AU - Tanaka, Taichu Y.
AU - Nagao, Takashi
AU - Kikuchi, Maki
AU - Murakami, Hiroshi
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Number 24340115, the Environment Research and Technology Development Fund (5-1502 and S-12) of the Ministry of the Environment, Japan, and the Joint Research Program of ALRC, Tottori University. The authors would like to thank the MODIS aerosol team and all of the investigators who made the bias-corrected NRL MODIS AOT data available. We would also like to thank the JMA Himawari-8 operation team and the MOE AEROS operation team. We deeply thank Dr. Sang-Woo Kim and Dr. Kazuma Aoki for their effort in establishing and maintaining Gosan, Korea and Toyama, Japan AERONET sites. We are grateful to Dr. Takemasa Miyoshi of RIKEN AICS for the use of his LETKF program code and Dr. Masamitsu Hayasaki of NIES for the use of his quality-controlled AEROS SPM data.
Publisher Copyright:
© 2016, the Meteorological Society of Japan.
PY - 2016
Y1 - 2016
N2 - Himawari-8 is a Japanese geostationary weather satellite that was launched in October 2014 and has been in operation since July 2015. Himawari-8 is equipped with an outstanding highperformance imager that has 16 spectral channels (3 for visible, 3 for near-infrared and 10 for infrared wavelengths) with a 10- minute observation interval. We retrieved aerosol optical thickness (AOT) from visible and near-infrared multispectral observations of Himawari-8 and assimilated the AOT data into a global aerosol forecast model with an ensemble Kalman filter system. The data assimilation result was validated by comparison with conventional products derived from polar-orbiting satellite aerosol observations (i.e., Moderate Resolution Imaging Spectroradiometer (MODIS) AOT) of an Asian dust storm in June 2015. The Himawari-8 AOT data assimilation successfully produced an analysis and forecast of the Asian dust that was comparable or superior to those of the MODIS AOT data assimilation. The Himawari-8 aerosol product has a much higher temporal coverage than that of polar-orbiting satellites, which is promising for aerosol data assimilation. This study is a first step in the application of geostationary satellites for aerosol research.
AB - Himawari-8 is a Japanese geostationary weather satellite that was launched in October 2014 and has been in operation since July 2015. Himawari-8 is equipped with an outstanding highperformance imager that has 16 spectral channels (3 for visible, 3 for near-infrared and 10 for infrared wavelengths) with a 10- minute observation interval. We retrieved aerosol optical thickness (AOT) from visible and near-infrared multispectral observations of Himawari-8 and assimilated the AOT data into a global aerosol forecast model with an ensemble Kalman filter system. The data assimilation result was validated by comparison with conventional products derived from polar-orbiting satellite aerosol observations (i.e., Moderate Resolution Imaging Spectroradiometer (MODIS) AOT) of an Asian dust storm in June 2015. The Himawari-8 AOT data assimilation successfully produced an analysis and forecast of the Asian dust that was comparable or superior to those of the MODIS AOT data assimilation. The Himawari-8 aerosol product has a much higher temporal coverage than that of polar-orbiting satellites, which is promising for aerosol data assimilation. This study is a first step in the application of geostationary satellites for aerosol research.
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U2 - 10.2151/sola.2016-020
DO - 10.2151/sola.2016-020
M3 - Article
AN - SCOPUS:85007575474
SN - 1349-6476
VL - 12
SP - 86
EP - 90
JO - Scientific Online Letters on the Atmosphere
JF - Scientific Online Letters on the Atmosphere
ER -