Satellite remote sensing of Asian aerosols: a case study of clean, polluted, and Asian dust storm days
In East Asia, satellite observation is important because aerosols from natural and anthropogenic sources have been recognized as a major source of regional and global air pollution. However, retrieving aerosols properties from satellite observations over land can be difficult because of the surface...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2010-12-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | http://www.atmos-meas-tech.net/3/1771/2010/amt-3-1771-2010.pdf |
| _version_ | 1828919587206332416 |
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| author | K. H. Lee Y. J. Kim |
| author_facet | K. H. Lee Y. J. Kim |
| author_sort | K. H. Lee |
| collection | DOAJ |
| description | In East Asia, satellite observation is important because aerosols from natural and anthropogenic sources have been recognized as a major source of regional and global air pollution. However, retrieving aerosols properties from satellite observations over land can be difficult because of the surface reflection, complex aerosol composition, and aerosol absorption. In this study, a new aerosol retrieval method called as the Moderate Resolution Imaging Spectroradiometer (MODIS) satellite aerosol retrieval (MSTAR) was developed and applied to three different aerosol event cases over East Asia. MSTAR uses a separation technique that can distinguish aerosol reflectance from top-of-atmosphere (TOA) reflectance. The aerosol optical thickness (AOT) was determined by comparing this aerosol reflectance with pre-calculated values. Three case studies show how the methodology identifies discrepancies between measured and calculated values to retrieve more accurate AOT. The comparison between MODIS and the Aerosol Robotic Network (AERONET) showed improvement using the suggested methodology with the cluster-based look-up-tables (LUTs) (linear slope = 0.94, <i>R</i> = 0.92) than using operational MODIS collection 5 aerosol products (linear slope = 0.78, <i>R</i> = 0.87). In conclusion, the suggested methodology is shown to work well with aerosol models acquired by statistical clustering of the observation data in East Asia. |
| first_indexed | 2024-12-13T21:31:53Z |
| format | Article |
| id | doaj.art-1924984bb24c41b896c79ace49f5651d |
| institution | Directory Open Access Journal |
| issn | 1867-1381 1867-8548 |
| language | English |
| last_indexed | 2024-12-13T21:31:53Z |
| publishDate | 2010-12-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Measurement Techniques |
| spelling | doaj.art-1924984bb24c41b896c79ace49f5651d2022-12-21T23:30:48ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482010-12-01361771178410.5194/amt-3-1771-2010Satellite remote sensing of Asian aerosols: a case study of clean, polluted, and Asian dust storm daysK. H. LeeY. J. KimIn East Asia, satellite observation is important because aerosols from natural and anthropogenic sources have been recognized as a major source of regional and global air pollution. However, retrieving aerosols properties from satellite observations over land can be difficult because of the surface reflection, complex aerosol composition, and aerosol absorption. In this study, a new aerosol retrieval method called as the Moderate Resolution Imaging Spectroradiometer (MODIS) satellite aerosol retrieval (MSTAR) was developed and applied to three different aerosol event cases over East Asia. MSTAR uses a separation technique that can distinguish aerosol reflectance from top-of-atmosphere (TOA) reflectance. The aerosol optical thickness (AOT) was determined by comparing this aerosol reflectance with pre-calculated values. Three case studies show how the methodology identifies discrepancies between measured and calculated values to retrieve more accurate AOT. The comparison between MODIS and the Aerosol Robotic Network (AERONET) showed improvement using the suggested methodology with the cluster-based look-up-tables (LUTs) (linear slope = 0.94, <i>R</i> = 0.92) than using operational MODIS collection 5 aerosol products (linear slope = 0.78, <i>R</i> = 0.87). In conclusion, the suggested methodology is shown to work well with aerosol models acquired by statistical clustering of the observation data in East Asia.http://www.atmos-meas-tech.net/3/1771/2010/amt-3-1771-2010.pdf |
| spellingShingle | K. H. Lee Y. J. Kim Satellite remote sensing of Asian aerosols: a case study of clean, polluted, and Asian dust storm days Atmospheric Measurement Techniques |
| title | Satellite remote sensing of Asian aerosols: a case study of clean, polluted, and Asian dust storm days |
| title_full | Satellite remote sensing of Asian aerosols: a case study of clean, polluted, and Asian dust storm days |
| title_fullStr | Satellite remote sensing of Asian aerosols: a case study of clean, polluted, and Asian dust storm days |
| title_full_unstemmed | Satellite remote sensing of Asian aerosols: a case study of clean, polluted, and Asian dust storm days |
| title_short | Satellite remote sensing of Asian aerosols: a case study of clean, polluted, and Asian dust storm days |
| title_sort | satellite remote sensing of asian aerosols a case study of clean polluted and asian dust storm days |
| url | http://www.atmos-meas-tech.net/3/1771/2010/amt-3-1771-2010.pdf |
| work_keys_str_mv | AT khlee satelliteremotesensingofasianaerosolsacasestudyofcleanpollutedandasianduststormdays AT yjkim satelliteremotesensingofasianaerosolsacasestudyofcleanpollutedandasianduststormdays |