The Fengyun 3(FY-3)series is the second generation of Chinese sun-synchronous meteorological satellites.The first two,FY-3A and FY-3B,were launched successfully on 27 May 2008 and 5 November 2010,respectively.FY-3A an...The Fengyun 3(FY-3)series is the second generation of Chinese sun-synchronous meteorological satellites.The first two,FY-3A and FY-3B,were launched successfully on 27 May 2008 and 5 November 2010,respectively.FY-3A and FY-3B share the same design,equipped with 11 payloads to observe the Earth system,but FY-3A is on a monitoring-orbit and FY-3B is on an afternoon-orbit.As a satellite constellation,FY-3A and FY-3B comprehensively improved meteorological observations in spectral wavelength,spatial coverage,and temporal frequency.This paper summarizes the improvements of the FY-3A and FY-3B satellites.New features,including optical imaging capacity from kilometer to hundred-meter resolution,passive microwave imaging,atmospheric temperature and moisture sounding,atmospheric chemistry remote sensing,and Earth radiation budget measurement,are presented with demonstrations of their use.Instruments scheduled for the FY-3C and beyond are introduced as well.展开更多
FY-3 satellites are Chinese second-generation polar orbit meteorological satellite series. Ultraviolet Total Ozone Unit (TOU) is one of the main payloads on FY-3 satellite and the first instrument for daily global cov...FY-3 satellites are Chinese second-generation polar orbit meteorological satellite series. Ultraviolet Total Ozone Unit (TOU) is one of the main payloads on FY-3 satellite and the first instrument for daily global coverage of total ozone monitoring in China. The main purpose of TOU is to measure the Earth backscatter ultraviolet radiation for retrieving daily global map of atmospheric ozone. TOU will provide the important parameters for environmental monitoring, climate forecasting and global climate changing research. At present, the in-orbit testing of TOU has accomplished and won a consummation, and it will be delivered to National Satellite Meteorological Center for the operational phase of the project. In this paper we introduce the instrument of TOU and its measuring principle, in general. We also analyze the recent working status of the instrument, including the sensitivity, measuring precision of solar irradiance, diffuser degradation and wavelength drift. The inversion results show that TOU can provide good global ozone maps, and a comparison with the OMI total ozone product shows that their RMS deviation is about 5%. It is indicated that the satisfied global distribution of total ozone can be obtained through TOU observational data and self-developed inversion method.展开更多
基金supported by the National Natural Science Foundation of China(Grant Numbers 41075021)the Key Project in the National Science&Technology Pillar Program of China(Grant Numbers 2008BAC40B01)International Science&Technology Cooperation Program of China(Grant Numbers 2010DFA21140).
文摘The Fengyun 3(FY-3)series is the second generation of Chinese sun-synchronous meteorological satellites.The first two,FY-3A and FY-3B,were launched successfully on 27 May 2008 and 5 November 2010,respectively.FY-3A and FY-3B share the same design,equipped with 11 payloads to observe the Earth system,but FY-3A is on a monitoring-orbit and FY-3B is on an afternoon-orbit.As a satellite constellation,FY-3A and FY-3B comprehensively improved meteorological observations in spectral wavelength,spatial coverage,and temporal frequency.This paper summarizes the improvements of the FY-3A and FY-3B satellites.New features,including optical imaging capacity from kilometer to hundred-meter resolution,passive microwave imaging,atmospheric temperature and moisture sounding,atmospheric chemistry remote sensing,and Earth radiation budget measurement,are presented with demonstrations of their use.Instruments scheduled for the FY-3C and beyond are introduced as well.
文摘FY-3 satellites are Chinese second-generation polar orbit meteorological satellite series. Ultraviolet Total Ozone Unit (TOU) is one of the main payloads on FY-3 satellite and the first instrument for daily global coverage of total ozone monitoring in China. The main purpose of TOU is to measure the Earth backscatter ultraviolet radiation for retrieving daily global map of atmospheric ozone. TOU will provide the important parameters for environmental monitoring, climate forecasting and global climate changing research. At present, the in-orbit testing of TOU has accomplished and won a consummation, and it will be delivered to National Satellite Meteorological Center for the operational phase of the project. In this paper we introduce the instrument of TOU and its measuring principle, in general. We also analyze the recent working status of the instrument, including the sensitivity, measuring precision of solar irradiance, diffuser degradation and wavelength drift. The inversion results show that TOU can provide good global ozone maps, and a comparison with the OMI total ozone product shows that their RMS deviation is about 5%. It is indicated that the satisfied global distribution of total ozone can be obtained through TOU observational data and self-developed inversion method.
