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Evaluation of VIIRS, GOCI, and MODIS Collection 6 AOD Retrievals Against Ground Sunphotometer Observations Over East AsiaPersistent high aerosol loadings together with extremely high population densities have raised serious air quality and public health concerns in many urban centers in East Asia. However, ground-based air quality monitoring is relatively limited in this area. Recently, satellite-retrieved Aerosol Optical Depth (AOD) at high resolution has become a powerful tool to characterize aerosol patterns in space and time. Using ground AOD observations from the Aerosol Robotic Network (AERONET) and the Distributed Regional Aerosol Gridded Observation Networks (DRAGON)-Asia Campaign, as well as from handheld sunphotometers, we evaluated emerging aerosol products from the Visible Infrared Imaging Radiometer Suite (VIIRS) aboard the Suomi National Polar-orbiting Partnership (S-NPP), the Geostationary Ocean Color Imager (GOCI) aboard the Communication, Ocean, and Meteorology Satellite (COMS), and Terra and Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) (Collection 6) in East Asia in 2012 and 2013. In the case study in Beijing, when compared with AOD observations from handheld sunphotometers, 51% of VIIRS Environmental Data Record (EDR) AOD, 37% of GOCI AOD, 33% of VIIRS Intermediate Product (IP) AOD, 26% of Terra MODIS C6 3km AOD, and 16% of Aqua MODIS C6 3km AOD fell within the reference expected error (EE) envelope (+/-0.05/+/- 0.15 AOD). Comparing against AERONET AOD over the JapanSouth Korea region, 64% of EDR, 37% of IP, 61% of GOCI, 39% of Terra MODIS, and 56% of Aqua MODIS C6 3km AOD fell within the EE. In general, satellite aerosol products performed better in tracking the day-to-day variability than tracking the spatial variability at high resolutions. The VIIRS EDR and GOCI products provided the most accurate AOD retrievals, while VIIRS IP and MODIS C6 3km products had positive biases.
Document ID
20170003284
Document Type
Reprint (Version printed in journal)
Authors
Xiao, Q.
(Emory Univ. Atlanta, GA, United States)
Zhang, H.
(I.M. Systems Group, Inc. Rockville, MD, United States)
Choi, M.
(Yonsei Univ. Seoul, Korea, Republic of)
Li, S.
(Academia Sinica Beijing, China)
Kondragunta, S.
(National Oceanic and Atmospheric Administration Greenbelt, MD, United States)
Kim, J.
(Yonsei Univ. Seoul, Korea, Republic of)
Holben, B.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Levy, R. C.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Liu, Y.
(Emory Univ. Atlanta, GA, United States)
Date Acquired
April 7, 2017
Publication Date
February 3, 2016
Publication Information
Publication: Atmospheric Chemistry and Physics
Volume: 16
Issue: 3
ISSN: 1680-7316
Subject Category
Meteorology And Climatology
Earth Resources And Remote Sensing
Report/Patent Number
GSFC-E-DAA-TN41222
GSFC-E-DAA-TN31765
Funding Number(s)
CONTRACT_GRANT: NNX11AI53G
CONTRACT_GRANT: NNX14AG01G
Distribution Limits
Public
Copyright
Other
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