| SUN Ling,ZHANG Jie,GUO Maohua. 2008. Influence analysis of gaseous absorption on “HY-1A” CZI data processing Simulation and correction for Rayleigh scattering. Acta Oceanologica Sinica, (6):102－114 |
| Influence analysis of gaseous absorption on “HY-1A” CZI data processing Simulation and correction for Rayleigh scattering |
| Influence analysis of gaseous absorption on “HY-1A” CZI data processing Simulation and correction for Rayleigh scattering |
| Received:April 21, 2008 Revised:June 02, 2008 |
| DOI： |
| Key words:“HY-1A”CZI gaseous absorption transmittance 6S |
| 中文关键词: “HY-1A”CZI gaseous absorption transmittance 6S |
| 基金项目:The National Natural Science Foundation of China under contralt No. 40606043, and the "863" Program under contract No. 2007AA12Z145. |
| Author Name | Affiliation | E-mail | | SUN Ling | National Satellite Meteorological Center, China Meteorological Administration, Beijing 100081, China | sunling@nsmc.cma.gov.cn | | 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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| 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 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. |
| 中文摘要: |
| 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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