Review of the applications of Multiangle Imaging SpectroRadiometer to air quality research |
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| Authors: | Yang Liu Dan Chen Ralph A Kahn KeBin He |
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| Institution: | (1) School of Public Health, Harvard University, Boston, MA 02215, USA;(2) Department of Environmental Engineering and Sciences, Tsinghua University, Beijing, 100084, China;(3) Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA |
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| Abstract: | The Multiangle Imaging SpectroRadiometer (MISR) launched by NASA in late 1999 has a unique multiangle design, which points
nine cameras at fixed angles along the satellite flight track and collects reflected solar radiation simultaneously. This
design allows the retrieval of a rich dataset of particle abundance, shape and composition over both land and ocean. Some
of its capabilities have not been seen by any currently operating satellite aerosol sensors. Since MISR is sensitive to fine
particles, it provides a new data source to study the spatial and temporal characteristics of air quality over large geographical
regions. We first briefly introduce the MISR instrument, the retrieval and structure of MISR aerosol data, and then review
the applications of MISR aerosol data in various aspects of air quality research since its launch. These include the spatial
distributions of particle pollution events such as dust storms, wild fires, and urban pollution. Because of the high quality
of MISR aerosol data, they can be used as quantitative indicators of particle pollution levels. We review the current modeling
studies of surface level particle concentrations. Next, we introduce research results using MISR’s advanced data such as the
plume heights, and particle microphysical properties. In the discussion, we compare MISR research with current MODIS research
to the best of our ability as MODIS data have been more extensively explored by the Chinese scientific community. Finally,
we summarize the advantages and disadvantages of MISR data related to its applications to the air quality research. Given
the highly quantitative measurements and comprehensive aerosol information MISR can provide, we believe that it will provide
great values to advance our understanding of the particle air pollution in China.
Supported by Harvard-EPA Center on Particle Health Effects (Grant Nos. R-827353 and R-832416), NASA’s Climate and Radiation
Research and Analysis Program, the EOS-MISR Instrument Project and the National High Technology Research and Development Program
of China (Grant No. 2006AA06A305). |
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| Keywords: | aerosol remote sensing MISR multiangle imaging aerosol optical thickness particulate matters PM2 5 PM10 air pollution |
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