Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-2461-2019 |
Remote sensing of aerosol properties from multi-wavelength and multi-pixel information over the ocean | |
Shi, Chong1,2,3; Hashimoto, Makiko3; Nakajima, Teruyuki3 | |
2019-02-26 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:4页码:2461-2475 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Japan |
英文摘要 | In this study, we investigate the feasibility of a multi-pixel scheme in the inversion of aerosol optical properties for multispectral satellite instruments over the ocean. Different from the traditional satellite aerosol retrievals conducted pixel by pixel, we derive the aerosol optical thickness (AOT) of multiple pixels simultaneously by adding a smoothness constraint on the spatial variation of aerosols and oceanic substances, which helps the satellite retrieval, with higher consistency from pixel to pixel. Simulations are performed for two representative oceanic circumstances, open and coastal waters, as well as the land-ocean interface region. We retrieve the AOT for fine, sea spray, and dust aerosols simultaneously using synthetic spectral measurements, which are from the Greenhouse Gases Observing Satellite and Thermal and Near Infrared Sensor for Carbon Observation-Cloud and Aerosol Imager (GOSAT/TANSO-CAI), with four wavelengths ranging from the ultraviolet to shortwave infrared bands. The forward radiation calculation is performed by a coupled atmosphere-ocean radiative transfer model combined with a three-component bio-optical oceanic module, where the chlorophyll a concentration, sediment, and colored dissolved organic matter are considered. Results show that accuracies of the derived AOT and spectral remote-sensing reflectance are both improved by applying smoothness constraints on the spatial variation of aerosol and oceanic substances in homogeneous or inhomogeneous surface conditions. The multi-pixel scheme can be effective in compensating for the retrieval biases induced by measurement errors and improving the retrieval sensitivity, particularly for the fine aerosols over the coastal water. We then apply the algorithm to derive AOTs using real satellite measurements. Results indicate that the multi-pixel method helps to polish the irregular retrieved results of the satellite imagery and is potentially promising for the aerosol retrieval over highly turbid waters by benefiting from the co-incident retrieval of neighboring pixels. A comparison of retrieved AOTs from satellite measurements with those from the Aerosol Robotic Network (AERONET) also indicates that retrievals conducted by the multi-pixel scheme are more consistent with the AERONET observations. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000459731300003 |
WOS关键词 | WATER-LEAVING RADIANCE ; OPTICAL-PROPERTIES ; POLARIMETRIC MEASUREMENTS ; INVERSION ALGORITHM ; SIZE DISTRIBUTIONS ; INTEGRAL EQUATIONS ; NUMERICAL SOLUTION ; SOLAR-RADIATION ; COLOR DATA ; RETRIEVAL |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27302 |
专题 | 地球科学 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Jiangsu, Peoples R China; 2.Nanjing Univ Informat Sci & Technol, Minist Educ, Key Lab Meteorol Disaster, Nanjing, Jiangsu, Peoples R China; 3.Japan Aerosp Explorat Agcy, Earth Observat Res Ctr, Tsukuba, Ibaraki 3058505, Japan |
推荐引用方式 GB/T 7714 | Shi, Chong,Hashimoto, Makiko,Nakajima, Teruyuki. Remote sensing of aerosol properties from multi-wavelength and multi-pixel information over the ocean[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(4):2461-2475. |
APA | Shi, Chong,Hashimoto, Makiko,&Nakajima, Teruyuki.(2019).Remote sensing of aerosol properties from multi-wavelength and multi-pixel information over the ocean.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(4),2461-2475. |
MLA | Shi, Chong,et al."Remote sensing of aerosol properties from multi-wavelength and multi-pixel information over the ocean".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.4(2019):2461-2475. |
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