| Influence analysis of gaseous absorption on “HY-1A” CZI data processing Simulation and correction for Rayleigh scattering |
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| 作者姓名： | SUN Ling ZHANG Jie GUO Maohua |
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| 作者单位： | SUN Ling(National Satellite Meteorological Center,China Meteorological Administration,Beijing 100081,China);ZHANG Jie(First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China);GUO Maohua(National Satellite Ocean Application Service,National Marine Environmental Forecasting Center,State Oceanic Administration,Beijing 100081,China) |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划) |
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| 摘 要： | Besides ozone, oxygen and water vapour should be considered for their absorptive effects on ＂HY--1A＂ CZI data processing. First ,gaseous transmittances under various conditions are computed and analyzed for the band settings of this sensor. Second, transmittances under six standard atmospheres are approximated as functions of zenith angle, the water vapour transmittance is approximated as a function of water vapour content and zenith angle, and the ozone transmittance is approximated as a function of ozone content and zenith angle. Finally, taking Rayleigh scattering as an example, the influence of ignoring gaseous absorption when calculating TOA reflectance is analyzed, and the effect of applying the presented transmittance approximations to gaseous absorption correction for Rayleigh scattering in ＂HY--1A＂ CZI data processing is evaluated.
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| 关 键 词： | 气体吸收 瑞利散射 数据处理 吸收校正 水蒸汽透过率 模拟 A型 标准大气压 |
| 收稿时间： | 2008/4/21 0:00:00 |
| 修稿时间： | 6/2/2007 12:00:00 AM |
Influence analysis of gaseous absorption on "HY-1A" CZI data processing Simulation and correction for Rayleigh scattering |
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| SUN Ling,ZHANG Jie,GUO Maohua.Influence analysis of gaseous absorption on "HY-1A" CZI data processing Simulation and correction for Rayleigh scattering[J].Acta Oceanologica Sinica,2008,27(6):102-114. |
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| Authors: | SUN Ling ZHANG Jie and GUO Maohua |
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| Institution: | 1.National Satellite Meteorological Center, China Meteorological Administration, Beijing 100081, China2.First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China3.National Satellite Ocean Application Service, National Marine Environmental Forecasting Center, State Oceanic Administration, Beijing 100081, China |
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| Abstract: | Besides ozone,oxygen and water vapour should be considered for their absorptive effects on "HY-1A" CZI data processing.First,gaseous transmittances under various conditions are computed and analyzed for the band settings of this sensor.Second,transmittances under six standard atmospheres are approximated as functions of zenith angle,the water vapour transmittance is ap-proximated as a function of water vapour content and zenith angle,and the ozone transmittance is approximated as a function of ozone content and zenith angle.Finally,taking Rayleigh scattering as an example,the influence of ignoring gaseous absorption when calculating TOA reflectance is analyzed,and the effect of applying the presented transmittance approximations to gaseous ab-sorption correction for Rayleigh scattering in "HY-1A" CZI data processing is evaluated. |
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| Keywords: | "HY-1 A" CZI gaseous absorption transmittance 6S |
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