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Cloud Top Pressure Retrieval Using Polarized and Oxygen A-band Measurements from GF5 and PARASOL Satellites

Advances in Atmospheric Sciences 2024年第4期41卷 680-700页

作者： Lesi WEI Huazhe SHANG Jian XU Chong SHI Gegen TANA Kefu CHAO Shanhu BAO Liangfu CHEN husi letu State Key Laboratory of Remote Sensing Science Aerospace Information Research InstituteChinese Academy of SciencesBeijing 100101China National Space Science Center Chinese Academy of SciencesBeijing 101407China College of Physics and Electronic Information Inner Mongolia Normal UniversityHohhot 010022China College of Geographical Science Inner Mongolia Normal UniversityHohhot 010022China University of Chinese Academy of Sciences Beijing 100101China

Cloud top pressure(CTP)is one of the critical cloud properties that significantly affects the radiative effect of ***-angle polarized sensors can employ polarized bands(490 nm)or O_(2)A-bands(763 and 765 nm)to retrieve the ***,the CTP retrieved by the two methods shows inconsistent results in certain cases,and large uncertainties in low and thin cloud retrievals,which may lead to challenges in subsequent *** study proposes a synergistic algorithm that considers both O_(2)A-bands and polarized bands using a random forest(RF)*** CTP data are used as the true values and the polarized and non-polarized measurements are concatenated to train the RF model to determine ***,through analysis,we proposed that the polarized signal becomes saturated as the cloud optical thickness(COT)increases,necessitating a particular treatment for cases where COT<10 to improve the algorithm's *** synergistic method was then applied to the directional polarized camera(DPC)and Polarized and Directionality of the Earth’s Reflectance(POLDER)measurements for evaluation,and the resulting retrieval accuracy of the POLDER-based measurements(RMSEPOLDER=205.176 hPa,RMSEDPC=171.141 hPa,R^(2)POLDER=0.636,R^(2)DPC=0.663,respectively)were higher than that of the MODIS and POLDER Rayleigh pressure *** synergistic algorithm also showed good performance with the application of DPC *** algorithm is expected to provide data support for atmosphere-related fields as an atmospheric remote sensing algorithm within the Cloud Application for Remote Sensing,Atmospheric Radiation,and Updating Energy(CARE)platform.

关键词： atmospheric remote sensing cloud top pressure multi-angle polarized O_(2)A-band GF-5/DPC PARASOL/POLDER-3

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Advances in Atmospheric Radiation:Theories,Models,and Their ***Ⅱ:Radiative Transfer Models and Related Applications

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Journal of Meteorological Research 2024年第2期38卷 183-208页

作者： Hua ZHANG Feng ZHANG Lei LIU Yuzhi LIU husi letu Yuanjian YANG Zhengqiang LI Kun WU Shuai HU Ming LI Tie DAI Fei WANG Zhili WANG Yuxiang LING Yining SHI Chao LIU State Key Laboratory of Severe Weather and Institute of Climate System Chinese Academy of Meteorological SciencesChina Meteorological AdministrationBeijing 100081 Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science&TechnologyNanjing 210044 Department of Atmospheric and Oceanic Sciences&Institute of Atmospheric Sciences Fudan UniversityShanghai 200438 College of Meteorology and Oceanography National University of Defense TechnologyChangsha 410073 College of Atmospheric Sciences Lanzhou UniversityLanzhou 730000 State Key Laboratory of Remote Sensing Science Aerospace Information Research InstituteChinese Academy of SciencesBeijing 100101 School of Atmospheric Physics Nanjing University of Information Science&TechnologyNanjing 210044 School of Atmospheric Sciences Nanjing University of Information Science&TechnologyNanjing 210044 Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029 CMA Earth System Modeling and Prediction Centre China Meteorological Administration(CMA)Beijing 100081

The subject of“atmospheric radiation”includes not only fundamental theories on atmospheric gaseous absorption and the scattering and radiative transfer of particles(molecules,cloud,and aerosols),but also their applications in weather,climate,and atmospheric remote sensing,and is an essential part of the atmospheric *** review includes two parts(Part I and PartⅡ);following the first part on gaseous absorption and particle scattering,this part(PartⅡ)reports the progress that has been made in radiative transfer theories,models,and their common applications,focusing particularly on the contributions from Chinese *** recent achievements on radiative transfer models and methods developed for weather and climate studies and for atmospheric remote sensing are firstly ***,the associated applications,such as surface radiation estimation,satellite remote sensing algorithms,radiative parameterization for climate models,and radiative-forcing related climate change studies are summarized,which further reveals the importance of radiative transfer theories and models.

关键词： atmospheric radiation radiative transfer remote sensing radiative forcing climate change

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New Progress and Challenges in Cloud–Aerosol–Radiation–Precipitation Interactions:Preface for a Special Issue※

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Advances in Atmospheric Sciences 2022年第12期39卷 1983-1985页

作者： Chuanfeng ZHAO Yuan WANG husi letu Department of Atmospheric and Oceanic Sciences School of PhysicsPeking UniversityBeijing 100871China Department of Earth Atmosphericand Planetary SciencesPurdue UniversityWest LafayetteIN 47907USA State Key Laboratory of Remote Sensing Science The Aerospace Information Research InstituteChinese Academy of Sciences(CAS)Beijing 100101China

Clouds play essential roles in the Earth’s radiative energy balance and global hydrological ***,the particles suspended in the air,can change cloud properties by interacting with radiation or serving as cloud condensation ***,the variations in cloud properties subjected to aerosol context,and their impacts on radiation and precipitation,are related to many complicating factors such as land types,meteorological conditions,cloud types,aerosol properties,and their co-varied *** of cloud-aerosol-radiation-precipitation interactions makes representation of clouds one of the largest uncertainties in climate models for future climate *** has also become a prevailing topic in atmospheric sciences over the past several decades.

关键词： Cloud aerosol prevailing

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Spatiotemporal Variations of Microwave Land Surface Emissivity(MLSE)over China Derived from Four-Year Recalibrated Fengyun 3B MWRI Data

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Advances in Atmospheric Sciences 2022年第9期39卷 1536-1560页

作者： Rui LI Jiheng HU Shengli WU Peng ZHANG husi letu Yu WANG Xuewen WANG Yuyun FU Renjun ZHOU Ling SUN School of Earth and Space Sciences Comparative Planetary Excellence Innovation CenterChinese Academy of SciencesUniversity of Science and Technology of ChinaHefei 230026China State Key Laboratory of Fire Science University of Science and Technology of ChinaHefei 230026China National Satellite Meteorological Center of China Meteorological Administration Beijing 100044China State Key Laboratory of Remote Sensing Science The Aerospace Information Research InstituteChinese Academy of Sciences(CAS)Beijing 100101China Green Earth Research Inc. SlingerlandsNew York 12259USA

Microwave Land Surface Emissivity(MLSE)over China under both clear and cloudy sky conditions was retrieved using measurements of recalibrated microwave brightness temperatures(Tbs)from Fengyun-3B Microwave Radiation Imager(FY-3B MWRI),combined with cloud properties derived from Himawari-8 Advanced Himawari Imager(AHI)*** contributions from cloud particles and atmospheric gases to the upwelling Tbs at the top of atmosphere were calculated and removed in radiative *** MLSEs at horizontal polarizations at 10.65,18.7,and 36.5 GHz during 7 July 2015 to 30 June 2019 over China showed high values in the southeast vegetated area and low values in the northwest barren,or sparsely vegetated,*** maximum values were found in the belt area of the Qinling-Taihang Mountains and the eastern edge of the Qinghai-Tibet Plateau,which is highly consistent with MLSEs derived from *** demonstrates that the measurements of FY-3B MWRI Tbs,including its calibration and validation,are reliable,and the retrieval algorithm developed in this study works *** variations of MLSE in China are mainly driven by the combined effects of vegetation,rainfall,and snow *** tropical and southern forest regions,the seasonal variation of MLSE is small due to the enhancement from vegetation and the suppression from *** the boreal area,snow causes a significant decrease of MLSE at 36.5 GHz in ***,the MLSE at lower frequencies experiences less *** the desert region in Xinjiang,increases of MLSEs at all frequencies are observed with increasing snow cover.

关键词： satellite remote sensing microwave surface emissivity Fengyun-3B MWRI Himawari-8 AHI

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对流层臭氧卫星遥感反演综述

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地球科学进展 2024年第1期39卷 56-70页

作者：许健张卓饶兰兰王雅鹏闫欢欢胡斯勒图石崇刘嵩格根塔娜王文煜石恩涛姚舜朱军王咏梅董晓龙施建成中国科学院国家空间科学中心北京100190 中国气象局国家卫星气象中心北京100081 中国科学院空天信息创新研究院北京100101 南方科技大学环境科学与工程学院广东深圳518055 航天东方红卫星有限公司北京100081

臭氧是地球大气中最重要的痕量气体之一,在气候变化和生态环境中均扮演着至关重要的角色。对流层臭氧作为光化学烟雾的重要成分之一,其浓度变化与人类活动息息相关。基于卫星遥感技术监测对流层臭氧浓度可以帮助我们更好地发现和定量解... 详细信息

臭氧是地球大气中最重要的痕量气体之一,在气候变化和生态环境中均扮演着至关重要的角色。对流层臭氧作为光化学烟雾的重要成分之一,其浓度变化与人类活动息息相关。基于卫星遥感技术监测对流层臭氧浓度可以帮助我们更好地发现和定量解释对流层臭氧在不同季节、不同时刻以及不同区域的变化特征,探讨臭氧在对流层中的成因机制。随着卫星遥感技术的全面发展,臭氧遥感产品(例如臭氧总量、廓线等)无论在产品精度或是时空分辨率方面均取得了显著进步,然而,由于受较弱卫星信号与复杂下垫面的影响,对流层臭氧遥感产品精度仍无法满足目前对流层大气成分的精细化科学应用研究。主要围绕对流层臭氧卫星遥感,回顾和分析了臭氧卫星遥感载荷的发展历程和现状,结果表明国内外已基于不同谱段(紫外—可见光、热红外和太赫兹)实现了全球及区域臭氧的时空分布探测;讨论了基于不同技术遥感反演算法(直接与间接反演、多波段联合反演、天底—临边协同反演、基于机器学习技术的创新算法等)的特点及适用性,分析表明算法精度的提升包括从复杂大气背景下的辐射传输模拟、基于地面观测的先验信息优化以及仪器定标与信噪比等多方面的工作;展望了卫星遥感在全球和区域尺度提供可靠对流层臭氧观测数据的应用前景,为对流层臭氧污染的形成机理、人类活动与气候变化如何影响对流层臭氧浓度变化等方面的研究提供关键数据支撑。

关键词：卫星遥感对流层臭氧大气反演

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Aerosol characteristics and impacts on weather and climate over the Tibetan Plateau

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National Science Review 2020年第3期7卷 492-495页

作者： Chuanfeng Zhao Yikun Yang Hao Fan Jianping Huang Yunfei Fu Xiaoye Zhang Shichang Kang Zhiyuan Cong husi letu Massimo Menenti State Key Laboratory of Earth Surface Processes and Resource Ecology and College of Global Change and Earth System Science Beijing Normal University Collaborative Innovation Center for Western Ecological Safety College of Atmospheric Sciences Lanzhou University School of Earth and Space Sciences University of Science and Technology of China Institute of Atmospheric Composition Chinese Academy of Meteorological Sciences State Key Laboratory of Cryospheric Sciences Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences Institute of Remote Sensing and Digital Earth Chinese Academy of Sciences

With the most massive snow and ice globally between 60°S and 60°N, the Tibetan Plateau (TP), also called the third pole of the world, plays significant roles in the weather, climate and lives in South Asia and East Asia and even the world [1–3].Investigating the variation of weather and the climate system over the TP has long been carried out, which is signif-

关键词： Aerosol characteristics and impacts on weather and climate over the Tibetan Plateau

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A review of the estimation of downward surface shortwave radiation based on satellite data:Methods, progress and problems

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Science China Earth Sciences 2020年第6期63卷 774-789页

作者： husi letu Jiancheng SHI Ming LI Tianxing WANG Huazhe SHANG Yonghui LEI Dabin JI Jianguang WEN Kun YANG Liangfu CHEN Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100010China Deparment of Earth System Science Tsinghua UniversityBeijing 100049China

The estimation of downward surface shortwave radiation(DSSR)is important for the Earth’s energy budget and climate change *** review was organised from the perspectives of satellite sensors,algorithms and future trends,retrospects and summaries of the satellite-based retrieval methods of DSSR that have been developed over the past 10 *** shortwave radiation reaching the Earth’s surface is affected by both atmospheric and land surface *** recent years,studies have given detailed considerations to the factors which affect *** is important to improve the retrieval accuracy of cloud microphysical parameters and aerosols and to reduce the uncertainties caused by complex topographies and high-albedo surfaces(such as snow-covered areas)on DSSR *** review classified DSSR retrieval methods into four categories:empirical,parameterisation,look-up table and machine-learning methods,and evaluated their advantages,disadvantages and *** efforts are needed to improve the calculation accuracy of atmospheric parameters such as cloud,haze,water vapor and other land surface parameters such as albedo of complex terrain and bright surface,organically combine machine learning and other methods,use the new-generation geostationary satellite and polar orbit satellite data to produce highresolution DSSR products,and promote the application of radiation products in hydrological and climate models.

关键词： Downward surface shortwave radiation Satellite remote sensing Cloud optical property Terrain correction

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An Introduction to the Chinese High-Resolution Earth Observation System:Gaofen-1~7 Civilian Satellites

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Journal of Remote Sensing 2022年第1期2022卷 244-257页

作者： Liangfu Chen husi letu Meng Fan Huazhe Shang Jinhua Tao Laixiong Wu Ying Zhang Chao Yu Jianbin Gu Ning Zhang Jin Hong Zhongting Wang Tianyu Zhang State Key Laboratory of Remote Sensing Science The Aerospace Information Research InstituteChinese Academy of Sciences(CAS)Datun Road No.20(North)Beijing 100101China University of Chinese Academy of Sciences(UCAS) Beijing 100101China Remote Sensing Application Center Ministry of Housing and Urban-Rural Development of the People’s Republic of ChinaSanlihe Road No.9 Beijing 100835China Key Laboratory of Optical Calibration and Characterization of Chinese Academy of Science Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031China Center for Satellite Application on Ecology and Environment Ministry of Ecology and EnvironmentBeijing 100006China

The Chinese High-resolution Earth Observation System(CHEOS)program has successfully launched 7 civilian satellites since *** satellites are named by Gaofen(meaning high resolution in Chinese,hereafter noted as GF).To combine the advantages of high temporal and comparably high spatial resolution,diverse sensors are deployed to each ***-1 and GF-6 carry both high-resolution cameras(2m resolution panchromatic and 8m resolution multispectral camera),providing high spatial imaging for land use monitoring;GF-3 is equipped with a C-band multipolarization synthetic aperture radar with a spatial resolution of up to 1 meter,mostly monitoring marine targets;GF-5 carried 6 sensors including hyperspectral camera and directional polarization camera,dedicated to environmental remote sensing and climate research,such as aerosol,clouds,and greenhouse gas monitoring;and GF-7 laser altimeter system payload enables a three-dimensional surveying and mapping of natural resource and land surveying,facilitating the accumulation of basic geographic *** study provides an overview of GF civilian series satellites,especially their missions,sensors,and applications.

关键词： payload Earth surveying

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基于被动遥感卫星可见至红外通道观测的云特性遥感

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光学学报 2022年第6期42卷 29-44页

作者：尚华哲胡斯勒图李明陶金花陈良富中国科学院空天信息创新研究院遥感科学国家重点实验室北京100010 中国科学院大学北京100049

云是地球辐射收支、水循环和生物化学循环的主要调节者。自1960年人类第一颗气象卫星(TIROS)的发射起,被动卫星遥感已经发展成为获取云观测资料最高效的手段之一。被动卫星具有观测范围大、时间跨度久的特点,其中利用可见至红外波段(0.4... 详细信息

云是地球辐射收支、水循环和生物化学循环的主要调节者。自1960年人类第一颗气象卫星(TIROS)的发射起,被动卫星遥感已经发展成为获取云观测资料最高效的手段之一。被动卫星具有观测范围大、时间跨度久的特点,其中利用可见至红外波段(0.40~15μm)的遥感成像仪相对高光谱成像仪、微波成像仪具有时空分辨率更高的观测优势。首先,针对极轨卫星多光谱成像仪、多角度偏振成像仪和新一代静止卫星成像仪三类载荷概述了被动卫星基于可见至红外波段的观测特点。然后,介绍了包括云检测、云相态、云顶参数、云光学和微物理参数的观测原理和应用方法。最后,通过总结和展望为被动卫星可见至红外资料的云特性遥感研究提供一些思考。

关键词：遥感云遥感微观特性宏观特性被动光学卫星云反演算法

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大气冰冻圈总量与时空结构

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科学通报 2022年第34期67卷 4130-4139页

作者：许高洁窦挺峰杨一帆岳瀚栋胡斯勒图马丽娟效存德中国科学院大学资源与环境学院北京100049 中国科学院空天信息创新研究院遥感科学国家重点实验室北京100094 中国气象局国家气候中心北京100081 北京师范大学地表过程与资源生态国家重点实验室北京100875

大气冰冻圈是大气层内所有冰体的总称,包括冰晶、雪花等,对全球辐射平衡、水循环和灾害天气的形成均具有重要影响,长期以来受到广泛关注.然而,将大气冰冻圈作为一个整体圈层的定量研究较少,相关认识基本停留在概念和理论阶段.本文基于Cl... 详细信息

大气冰冻圈是大气层内所有冰体的总称,包括冰晶、雪花等,对全球辐射平衡、水循环和灾害天气的形成均具有重要影响,长期以来受到广泛关注.然而,将大气冰冻圈作为一个整体圈层的定量研究较少,相关认识基本停留在概念和理论阶段.本文基于CloudSat和CALIPSO卫星数据联合反演的DARDAR产品,估算了全球大气冰冻圈的总量、三维空间分布和季节变化特征.结果显示:大气冰冻圈总质量约为63[58.8~65.7]Gt,上界为高层冰云的云顶,下界略低于零温层.大尺度环流系统决定了大气冰冻圈的纬向带状分布特征,冰晶形成与增长的微物理机制导致大气冰体在热带上空–8°C等温层出现高值中心.大气冰体的高值区主要分布于低纬度强对流区,从垂直剖面上看,主要分布于对流层中层和低层.痕量冰区(冰水路径<15.0 g/m^(2))主要分布于副热带等高压系统控制区.在高海拔地区,由于水汽含量较低,大气冰含量整体偏低,如青藏高原冬季冰水路径仅为31.3 g/m^(2),约为全球平均值的四分之一.该项研究为进一步认识大气冰冻圈的天气气候效应奠定了基础.

关键词：大气冰冻圈强对流冰水路径零温层痕量冰区

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