The Ozone Monitoring Suite-Nadir(OMS-N),a state-of-the-art hyperspectral ultraviolet-visible(UV-VIS)sensor onboard China's FengYun-3F(FY-3F)satellite,was launched in August 2023.Designed for a morning orbit,OMS-N ...The Ozone Monitoring Suite-Nadir(OMS-N),a state-of-the-art hyperspectral ultraviolet-visible(UV-VIS)sensor onboard China's FengYun-3F(FY-3F)satellite,was launched in August 2023.Designed for a morning orbit,OMS-N represents a significant advancement in global atmospheric composition monitoring,offering an unprecedented spatial resolution of 7 km×7 km.The total ozone column(TOC)product derived from OMS-N is critical for climate modeling and UVradiation assessment.This study presents the first TOC retrievals from OMS-N,utilizing an adapted Differential Optical Absorption Spectroscopy(DOAS)algorithm.The retrieval algorithm overcomes traditional DOAS limitations by incorporating key innovations,including optimized radiative transfer calculations and refined a priori information on surface properties and ozone profiles,which are derived directly from OMS-N spectra rather than relying on external datasets or climatologies.Validation against ground-based measurements from Brewer,Dobson,and SAOZ instruments at 33 sites demonstrated strong agreement,with correlation coefficients mostly greater than 0.9.Comparisons with other well-established satellite instruments,including TROPOMI and GOME-2B,showed that OMS-N can consistently capture global seasonal ozone patterns,with biases typically within 2%across hemispheres and seasons.These results establish OMS-N as a reliable tool for high-resolution dynamic ozone monitoring,significantly enhancing our ability to address climate and environmental challenges.展开更多
基金supported by the National Key R&D Program of China(Grant No.2023YFB3907500)the National Natural Science Foundation of China(Grant Nos.42375142 and 42305154)+2 种基金the Open Fund of Innovation Center for FengYun Meteorological Satellite(FYSIC)FengYun Application Pioneering Project(Grant No.FY-APPZX-2022.0214)the National Civilian Space Infrastructure Project(Grant No.Y5BZ31AC60)。
文摘The Ozone Monitoring Suite-Nadir(OMS-N),a state-of-the-art hyperspectral ultraviolet-visible(UV-VIS)sensor onboard China's FengYun-3F(FY-3F)satellite,was launched in August 2023.Designed for a morning orbit,OMS-N represents a significant advancement in global atmospheric composition monitoring,offering an unprecedented spatial resolution of 7 km×7 km.The total ozone column(TOC)product derived from OMS-N is critical for climate modeling and UVradiation assessment.This study presents the first TOC retrievals from OMS-N,utilizing an adapted Differential Optical Absorption Spectroscopy(DOAS)algorithm.The retrieval algorithm overcomes traditional DOAS limitations by incorporating key innovations,including optimized radiative transfer calculations and refined a priori information on surface properties and ozone profiles,which are derived directly from OMS-N spectra rather than relying on external datasets or climatologies.Validation against ground-based measurements from Brewer,Dobson,and SAOZ instruments at 33 sites demonstrated strong agreement,with correlation coefficients mostly greater than 0.9.Comparisons with other well-established satellite instruments,including TROPOMI and GOME-2B,showed that OMS-N can consistently capture global seasonal ozone patterns,with biases typically within 2%across hemispheres and seasons.These results establish OMS-N as a reliable tool for high-resolution dynamic ozone monitoring,significantly enhancing our ability to address climate and environmental challenges.
