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Improvements on global meteorological observations from the current Fengyun 3 satellites and beyond

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International Journal of Digital Earth 2012年第3期5卷 251-265页

作者： Jun Yang Peng Zhang naimeng lu Zhongdong Yang Jinming Shi Chaohua Dong National Satellite Meteorological Center Chinese Meteorological AdministrationBeijingChina

The Fengyun 3(FY-3)series is the second generation of Chinese sun-synchronous meteorological *** first two,FY-3A and FY-3B,were launched successfully on 27 May 2008 and 5 November 2010,***-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 *** a satellite constellation,FY-3A and FY-3B comprehensively improved meteorological observations in spectral wavelength,spatial coverage,and temporal *** paper summarizes the improvements of the FY-3A and FY-3B *** 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 *** scheduled for the FY-3C and beyond are introduced as well.

关键词： FY-3 sun-synchronous meteorological satellite satellite constellation

The TanSat mission： preliminary global observations

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Science Bulletin 2018年第18期63卷 1200-1207页

作者： Yi Liu Jing Wang lu Yao Xi Chen Zhaonan Cai Dongxu Yang Zengshan Yin Songyan Gu Longfei Tian naimeng lu Daren Lyu Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029 China University of Chinese Academy of Sciences Beijing 100049 China Shanghai Engineering Center for Microsatellites Shanghai 201210 China National Satellite Meteorological Center China Meteorological Administration Beijing 100081 China

The Chinese global carbon dioxide monitoring satellite （TanSat） was launched successfully in December 2016 and has completed its on-orbit tests and calibration. TanSat aims to measure the atmospheric column-averaged dry air mole fractions of carbon dioxide （XCO2） with a precision of 4 ppm at the regional scale, and in addition, to derive global and regional CO2 fluxes. Progress towards these objectives is reviewed and the first scientific results from TanSat measurements are presented. TanSat on-orbit tests indicate that the Atmospheric Carbon dioxide GratingSpectrometer is in normal working status and is beginning to produce LIB products. The preliminary TanSat XCO2 products have been retrieved by an algorithm and compared to NASA Orbiting Carbon Observatory-2 （OCO-2） measurements during an over- lapping observation period. Furthermore, the XCO2 retrievals have been validated against eight groundsite measurement datasets from the Total Carbon Column Observing Network, for which the preliminary conclusion is that TanSat has met the precision design requirement, with an average bias of 2.11 ppm. The first scientific observations are presented, namely, the seasonal distributions of XCO2 over land on a global scale.

关键词： TanSat Carbon dioxide Retrieval algorithm Carbon flux inversion

The First Global Carbon Dioxide Flux Map Derived from TanSat Measurements

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Advances in Atmospheric Sciences 2021年第9期38卷 1433-1443页

作者： Dongxu YANG Yi LIU Liang FENG Jing WANG lu YAO Zhaonan CAI Sihong ZHU naimeng lu Daren LYU Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China National Centre for Earth Observation University of EdinburghEdinburghEH93FFUK University of Edinburgh EdinburghEH93FFUK National Satellite Meteorological Center China Meteorological Administration Beijing 100081China

Space-borne measurements of atmospheric greenhouse gas concentrations provide global observation constraints for top-down estimates of surface carbon ***,the first estimates of the global distribution of carbon surface fluxes inferred from dry-air CO_2 column (XCO_2) measurements by the Chinese Global Carbon Dioxide Monitoring Scientific Experimental Satellite (Tan Sat) are *** ensemble transform Kalman filter (ETKF) data assimilation system coupled with the GEOS-Chem global chemistry transport model is used to optimally fit model simulations with the Tan Sat XCO_2 observations,which were retrieved using the Institute of Atmospheric Physics Carbon dioxide retrieval Algorithm for Satellite remote sensing (IAPCAS).High posterior error reduction (30%–50%) compared with a priori fluxes indicates that assimilating satellite XCO_2 measurements provides highly effective constraints on global carbon flux *** impacts are also highlighted by significant spatiotemporal shifts in flux patterns over regions critical to the global carbon budget,such as tropical South America and *** integrated global land carbon net flux of 6.71±0.76 Gt C yr^(-1) over12 months (May 2017–April 2018) is estimated from the Tan Sat XCO_2 data,which is generally consistent with other inversions based on satellite data,such as the JAXA GOSAT and NASA OCO-2 XCO_2 ***,discrepancies were found in some regional flux estimates,particularly over the Southern Hemisphere,where there may still be uncorrected bias between satellite measurements due to the lack of independent reference *** results of this study provide the groundwork for further studies using current or future Tan Sat XCO_2 data together with other surfacebased and space-borne measurements to quantify biosphere–atmosphere carbon exchange.

关键词： TanSat carbon flux CO_2 flux inversion

A New TanSat XCO2 Global Product towards Climate Studies

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Advances in Atmospheric Sciences 2021年第1期38卷 8-11页

作者： Dongxu YANG Yi LIU Hartmut BOESCH lu YAO Antonio DI NOIA Zhaonan CAI naimeng lu Daren LYU Maohua WANG Jing WANG Zengshan YIN Yuquan ZHENG Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China Earth Observation Science School of Physics and AstronomyUniversity of LeicesterLeicestershire LE17RHUK National Centre for Earth Observation University of LeicesterLeicestershire LE17RHUK National Satellite Meteorological Center China Meteorological Administration Beijing 100081China Shanghai Engineering Center for Microsatellites Shanghai 201210China Changchun Institute of Optics Fine Mechanics and PhysicsChangchun 130033China

The 1st Chinese carbon dioxide(CO2)monitoring satellite mission,TanSat,was launched in *** 1st TanSat global map of CO2 dry-air mixing ratio(XCO2)measurements over land was released as version 1 data product with an accuracy of 2.11 ppmv(parts per million by volume).In this paper,we introduce a new(version 2)TanSat global XCO2 product that is approached by the Institute of Atmospheric Physics Carbon dioxide retrieval Algorithm for Satellite remote sensing(IAPCAS),and the European Space Agency(ESA)Climate Change Initiative plus(CCI+)TanSat XCO2 product by University of Leicester Full Physics(UoL-FP)retrieval *** correction of the measurement spectrum improves the accuracy(−0.08 ppmv)and precision(1.47 ppmv)of the new retrieval,which provides opportunity for further application in global carbon flux studies in the ***-comparison between the two retrievals indicates a good agreement,with a standard deviation of 1.28 ppmv and a bias of−0.35 ppmv.

关键词： TanSat CO2 remote sensing carbon flux climate change

A New Global Solar-induced Chlorophyll Fluorescence(SIF)Data Product from TanSat Measurements

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Advances in Atmospheric Sciences 2021年第3期38卷 341-345页

作者： lu YAO Dongxu YANG Yi LIU Jing WANG Liangyun LIU Shanshan DU Zhaonan CAI naimeng lu Daren LYU Maohua WANG Zengshan YIN Yuquan ZHENG Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China Key Laboratory of Digital Earth Science Institute of Remote Sensing and Digital EarthChinese Academy of SciencesBeijing 100094China National Satellite Meteorological Center China Meteorological AdministrationBeijing 100081China Changchun Institute of Optics Fine Mechanics and PhysicsChangchun 130033China Shanghai Engineering Center for Microsatellites Shanghai 201210China

The Chinese Carbon Dioxide Observation Satellite Mission(TanSat)is the third satellite for global CO2 monitoring and is capable of detecting weak solar-induced chlorophyll fluorescence(SIF)signals with its advanced technical *** on the Institute of Atmospheric Physics Carbon Dioxide Retrieval Algorithm for Satellite Remote Sensing(IAPCAS)platform,we successfully retrieved the TanSat global SIF product spanning the period of March 2017 to February 2018 with a physically based *** paper introduces the new TanSat SIF dataset and shows the global seasonal SIF maps.A brief comparison between the IAPCAS TanSat SIF product and the data-driven SVD(singular value decomposition)SIF product is also performed for follow-up algorithm *** comparative results show that there are regional biases between the two SIF datasets and the linear correlations between them are above 0.73 for all *** future SIF data product applications and requirements for SIF space observation are discussed.

关键词： TanSat solar-induced chlorophyll fluorescence retrieval algorithm remote sensing

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气象小卫星发展的回顾与展望

先进小卫星技术（中英文）

先进小卫星技术（中英文） 2024年第1期1卷 23-29页

作者：王劲松卢乃锰赵现纲徐娜姚蓬娟郭杨商建廖蜜国家卫星气象中心(国家空间天气监测预警中心) 北京100081 许健民气象卫星创新中心北京100081

气象卫星对地观测是大气、空间气象要素观测的重要手段.近年来,气象小卫星发展迅猛,引起对地观测领域的广泛关注.回顾了目前国内外具有重要影响力的气象小卫星星座的设计思路和布局,在已经实现的对降水、云雨粒子和大气温湿度廓线等重... 详细信息

气象卫星对地观测是大气、空间气象要素观测的重要手段.近年来,气象小卫星发展迅猛,引起对地观测领域的广泛关注.回顾了目前国内外具有重要影响力的气象小卫星星座的设计思路和布局,在已经实现的对降水、云雨粒子和大气温湿度廓线等重要气象要素的探测能力基础上,提出并阐述了未来中国气象小卫星的发展构想.中国将打造具有前沿技术验证能力、科学试验能力、星座协同和即时定制能力的气象小卫星星座,与大平台系列风云气象卫星互联互通,共同作为数字太空系统的天基感知节点,形成大小结合、星地统筹、协同观测、综合应用的气象卫星发展新格局,为气象高质量发展提供新的技术支撑.

关键词：风云气象卫星气象小卫星掩星探测小卫星微波探测小卫星雷达探测小卫星协同观测

TanSat Mission Achievements： from Scientific Driving to Preliminary Observations

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空间科学学报 2018年第5期38卷 627-639页

作者： LIU Yi WANG Jing YAO lu CHEN Xi CAI Zhaonan YANG Dongxu YIN Zengshan GU Songyan TIAN Longfei lu naimeng L Daren Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 University of Chinese Academy of Sciences Beijing 100190 Shanghai Engineering Center for Microsatellites Shanghai 201203 National Satellite Meteorological Center

The Chinese global carbon dioxide monitoring satellite(TanSat)was successfully launched in December 2016 and has completed its on-orbit tests and *** aims to measure the atmospheric Carbon Dioxide column-averaged dry air mole fractions(X_(CO_2))with a precision of 4 ppm at the regional scale,and further to derive the CO_2 global and regional *** toward these objectives is reviewed and the first scientific results from TanSat measurements are *** the design phase,Observation System Simulation Experiments(OSSE)on TanSat measurements performed prior to launch measurements using a nadir and a glint alternative mode when considering the balance of stable measurements and reduces the flux uncertainty(64%).The constellation measurements of two satellites indicate an extra 10%improvement in flux inversion if the satellite measurements have no bias and similar *** TanSat on-orbit test indicates that the instrument is stable and beginning to produce X_(CO_2)*** preliminary TanSat measurements have been validated with Total Carbon Column Observing Network(TCCON)measurements and have inter-compared with OCO-2 measurements in an overlap measurement.

关键词：科学开车二氧化碳监视卫星干燥空气设计阶段地区性 ppm

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气象卫星发展回顾与展望

遥感学报 2016年第5期20卷 832-841页

作者：卢乃锰谷松岩国家卫星气象中心北京100081

回顾了国际气象卫星和中国风云气象卫星的发展,综述了气象卫星在图像解译、定量产品应用和数据同化方面的成就以及辐射校正技术的进步。围绕大气科学,特别是数值天气预报对天基观测的需求,展望了未来气象卫星的技术发展方向。

关键词：气象卫星遥感应用极地轨道气象卫星静止轨道气象卫星

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星载测雨雷达探测频段选择仿真研究

气象学报 2011年第2期69卷 344-351页

作者：吴琼杨虎卢乃锰中国气象科学研究院北京100081 国家卫星气象中心北京100081

在星载测雨雷达必须满足的3个基本条件的基础上,开展了风云三号(FY-3)星载测雨雷达最佳波段组合的研究。文中将高精度GCE(Goddard cumulus ensemble)模式中BOB飓风资料的大气廓线和水凝物廓线作为三维Quickbeam气象雷达模拟软件的输入,... 详细信息

在星载测雨雷达必须满足的3个基本条件的基础上,开展了风云三号(FY-3)星载测雨雷达最佳波段组合的研究。文中将高精度GCE(Goddard cumulus ensemble)模式中BOB飓风资料的大气廓线和水凝物廓线作为三维Quickbeam气象雷达模拟软件的输入,分别模拟了5、10、14、35和94GHz 5个频点星载测雨雷达的探测性能。从近地面层获得较宽的降水动态范围的角度,雷达频点中必须要选择一个低频。在现有天线硬件条件以及科技水平的限制下,基本排除了5和10 GHz作为星载测雨雷达探测频点的可能性。14、35和94GHz 3个频点模拟探测台风不同区域时的等效雷达反射率因子和测量的雷达反射率因子的对比结果表明,雷达频点越高,受衰减的影响就越严重,因此94 GHz频点不适合作为星载测雨雷达的探测频点。考虑到高频点对弱降水探测的敏感性比较高,能够弥补低频点在弱降水区域受到敏感性限制的缺点。因此,高频点可以用来探测弱降水。最后,综合星载测雨雷达的频率配置分析结果,确定使用位于13.40—14.00GHz以及35.50—35.60GHz的Ku和Ka波段作为FY-3号星载测雨雷达的主探测波段。Ku波段有利于探测强降水,Ka波段则有利于探测弱降水,两者结合形成的双频探测有利于提高降水反演的精度。

关键词：星载测雨雷达 GCE模型反射率因子 Quickbeam 雷达模拟软件