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The use of high-performance and high-throughput computing for the fertilization of digital earth and global change studies

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International Journal of Digital Earth 2011年第3期4卷 185-210页

作者： Yong Xue Dominic Palmer-Brown huadong guo Center for Earth Observation and Digital Earth Chinese Academy of SciencesNo.9 Beiyitiao RoadZhongguancunHaidian DistrictBeijing 100080China Faculty of Computing London Metropolitan University166-220 Holloway RoadLondon N78DBUK

The study of global climate change seeks to understand:(1)the components of the Earth’s varying environmental system,with a particular focus on climate;(2)how these components interact to determine present conditions;(3)the factors driving these components;(4)the history of global change and the projection of future change;and(5)how knowledge about global environmental variability and change can be applied to present-day and future *** paper addresses the use of high-performance computing and high-throughput computing for a global change study on the Digital Earth(DE)*** aspects of the use of high-performance computing(HPC)/high-throughput computing(HTC)on the DE platform are the processing of data from all sources,especially Earth observation data,and the simulation of global change *** HPC/HTC is an essential and efficient tool for the processing of vast amounts of global data,especially Earth observation *** current trend involves running complex global climate models using potentially millions of personal computers to achieve better climate change predictions than would ever be possible using the supercomputers currently available to scientists.

关键词： high-performance computing(HPC) high-throughput computing(HTC) digital earth global change climate change Earth observation grid computing

Earth observation satellite data receiving, processing system and data sharing

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International Journal of Digital Earth 2012年第3期5卷 241-250页

作者： huadong guo Jianbo Liu An Li Jianguo Zhang Center for Earth Observation and Digital Earth Chinese Academy of SciencesBeijingChina

The China Remote Sensing Satellite Ground Station was established in *** currently has three receiving stations in the north,west,and south of China,with the capacity to receive data from 15 international and domestic Earth observation satellites covering the entire Chinese territory and 70%of ***,a systematic,integrated,and standardized spatial information service system has been built.A data-sharing project for medium-resolution Earth observation satellites has been conducted and plays an important role in land,ocean,and atmospheric resource investigation and environmental monitoring.

关键词： Earth observation data receiving data sharing remote sensing applications

Big Earth data:A new frontier in Earth and information sciences

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Big Earth Data 2017年第1期1卷 4-20页

作者： huadong guo Institute of remote Sensing and Digital Earth Chinese academy of SciencesBeijingChina

Big data is a revolutionary innovation that has allowed the development of many new methods in scientific *** new way of thinking has encouraged the pursuit of new *** data occupies the strategic high ground in the era of knowledge economies and also constitutes a new national and global strategic resource.“Big Earth data”,derived from,but not limited to,Earth observation has macro-level capabilities that enable rapid and accurate monitoring of the Earth,and is becoming a new frontier contributing to the advancement of Earth science and significant scientific *** the context of the development of big data,this paper analyzes the characteristics of scientific big data and recognizes its great potential for development,particularly with regard to the role that big Earth data can play in promoting the development of Earth *** this basis,the paper outlines the Big Earth Data Science Engineering Project(CASEarth)of the Chinese Academy of Sciences Strategic Priority Research *** data is at the forefront of the integration of geoscience,information science,and space science and technology,and it is expected that big Earth data will provide new prospects for the development of Earth science.

关键词： Big data scientific big data big Earth data Earth observation geoscience scientific discoveries decision support

The angular characteristics of Moon-based Earth observations

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International Journal of Digital Earth 2020年第3期13卷 339-354页

作者： huadong guo Yuanzhen Ren Guang Liu Hanlin Ye Beijing Institute of Radio Measurement The Second Academy of China Aerospace Science and Industry Corporation(CASIC)BeijingPeople’s Republic of China Institute of Remote Sensing and Digital Earth Chinese Academy of SciencesBeijingPeople’s Republic of China

The Moon,Earth’s only natural satellite,is a potential new platform for Earth ***,with the wide applicability of the angular information from remote sensing data,it has been attracting increasingly more ***,this study focuses on the angular characteristics of Moon-based Earth *** ephemeris DE430 and Earth orientation parameters,the position and attitude of the Sun,Earth,and Moon were obtained and their coordinates normalized to a single framework using coordinate transformations between the related reference ***,an angular geometric model of Moon-based Earth observations was constructed,and the corresponding angular algorithms were *** results revealed the angular range and distribution characteristics of Moon-based Earth *** every point on the surface of the Earth,the view and solar zenith angles all vary widely,which decreases with increasing *** view and solar zenith angles all vary widely with the largest range of values in the equatorial and polar regions and a smaller range of values in ***,the range of solar angles of Moon-based Earth observations is the same as that of alltime solar angles,indicating the potential for monitoring and understanding large-scale geoscientific phenomena using Moon-based Earth observations.

关键词： Moon-based Earth observations geometric model angular algorithm solar angle view angle

Progress of Earth Observation in China

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空间科学学报 2018年第5期38卷 797-809页

作者： guo huadong LIU Guang LIANG Dong ZHANG Lu XIAO Han Institute of Remote Sensing and Digital Earth Chinese Academy of Sciences Beijing 100094 University of Chinese Academy of Sciences Beijing 100049

Sustainability is the current theme of global development, and for China, it is not only an opportunity but also a challenge. In 2016, the Paris Agreement on climate change was adopted, addressing the need to limit the rise of global temperatures. The United Nations(UN) has set Sustainable Development Goals(SDGs) to transform our world in terms of closely linking human well-being, economic prosperity, and healthy environments. Sustainable development requires the support of spatial information and objective evaluation,and the capability of macroscopic, rapid, accurate Earth observation techniques plays an important role in sustainable development. Recently, Earth observation technologies are developing rapidly in China, where scientists are building coordinated, comprehensive and sustainable Earth observation systems for global monitoring programs. Recent efforts include the Digital Belt and Road Program(DBAR) and comparative studies of the "three poles". This and other researches will provide powerful support for solving problems such as global change and environmental degradation.

关键词：地球观察系统中国健康环境持续开发可持续性气候变化全球温度持续发展

Earth Observation Technologies for Sustainable Development

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空间科学学报 2010年第5期30卷 493-498页

作者： guo huadong Ma Jianwen Center for Earth Observation and Digital Earth Chinese Academy of Sciences Beijing 100190

The multi-platform,multi-band and multi-mode Earth Observation(EO) system has been established in China in recent *** advanced technologies are playing more and more important role for sustainable development in whole *** paper introduces the results and achievements of EO monitoring for agriculture,EO surveying for land resources,EO monitoring for ecological environment,EO support for national surveying and national e-government,natural disaster monitoring and emergency *** points out that the EO technologies could contribute more to the country,including in the field of global change in the coming decade.

关键词：可持续发展观测技术地球观测自然灾害监测土地资源监测成果环氧乙烷生态环境

Progress on CASEarth Satellite Development

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空间科学学报 2020年第5期40卷 707-717页

作者： guo huadong CHEN Hongyu CHEN Liangfu FU Bihong Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100101 Innovation Academy for Microsatellites Chinese Academy of SciencesShanghai 201204 University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049

CASEarth satellite is the first space Earth science satellite produced by the Chinese Academy of *** satellite has three payloads:high-definition Thermal Infrared Spectrometer(TIS),highdefinition Glimmer Imager for Urbanization(GIU),and high-definition Multispectral Imager for Inshore(MII).These payloads are used to explore the urbanization level and residential layout,the coastal ecosystem,and new methods and approaches of environmental detection during night-time and even under conditions of polar aurora and provide scientific evidence for the refined depiction of human *** CASEarth satellite can provide space observation data for A Project on Big Earth Data Science Engineering as well as scientific and application studies inside and outside China.

关键词： CASEarth satellite Human traces Thermal infrared spectrometer High-definition glimmer imager for urbanization Multispectral imager for inshore

Retrieving dry snow density with SIR-C polarimetric SAR data

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Chinese Science Bulletin 2001年第14期46卷 1211-1214页

作者： Zhen Li huadong guo Jiancheng Shi Chinese Acad Sci Inst Remote Sensing Applicat Lab Remote Sensing Informat Sci Beijing 100101 Peoples R China

For a given incidence angle at the snow surface, a greater snow density causes a greater change in the incidence angle at the snow-ground interface; for a given snow density, however, a larger incidence angle at the snow surface results in a greater change in the refractive angle in the snow layer, by comparing the difference of incidence angle at the snow-ground interface and the air-snow interface with different snow density. Algorithm for estimating dry snow density used backscattering measurements with polarimetric SAR at L-band frequency is developed based on simulation of the surface backscattering components ghh,and gvv using the IEM model and regression analysis. The comparison of the estimated snow density from SAR L-band images with that from field measurements during the SIR-C/X-SAR overpass shows root means square error of 0.050 g/cm3. It shows that this algorithm can be accurately used to estimate dry snow density distribution.

关键词： polarimetric SAR dielectric constant backscattering dry snow density retrieving.

Urban sprawl in provincial capital cities in China: evidence from multi-temporal urban land products using Landsat data

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Science Bulletin 2019年第14期64卷 955-957页

作者： Linlin Lu huadong guo Christina Corbane Qingting Li Key Laboratory of Digital Earth Science Institute of Remote Sensing and Digital Earth Chinese Academy of Sciences Beijing 100094 China European Commission Joint Research Centre (JRC) Directorate for Space Security & Migration Ispra I-21027 Italy

The onset of global urbanization has led to a population shift from rural to urban areas and the expansion of urban development [1-3]. Urban land areas are growing at faster rates than their populations in most parts of the world [4]. The urban sprawl process refers to dispersed land development characterized by low-density, unplanned, and uneven patter ns of growth duri ng urban expansion. This process can result in inefficient use of land resources contradictory to the principle of sustainable development [5]. Additionally, urban sprawl has various environmental, economic, and social consequences, including the following: loss of agricultural land, higher costs for transportation infrastructure, increased landscape fragmentation, degeneration of soil ecological functions, and reduced ecosystem resilience. It is crucial to understand the trends and patterns of urban sprawl to implement a framework for sustainable urban development in developing regions.

关键词： urban development populations world