In 2024,the Chinese Meridian Project(CMP)completed its construction,deploying 282 instruments across 31 stations.This achievement not only provides a robust foundation but also serves as a reference template for the I...In 2024,the Chinese Meridian Project(CMP)completed its construction,deploying 282 instruments across 31 stations.This achievement not only provides a robust foundation but also serves as a reference template for the International Meridian Circle Program(IMCP).The IMCP aims to integrate and establish a comprehensive network of ground-based monitoring stations designed to track the propagation of space weather events from the Sun to Earth.Additionally,it monitors various disturbances generated within the Earth system that impact geospace.Over the past two years,significant progress has been made on the IMCP.In particular,the second phase of construction for the China-Brazil Joint Laboratory for Space Weather has been completed,and the North Pole and Southeast Asia networks are under active construction.The 2024 IMCP joint observation campaign was successfully conducted.To facilitate these developments,the scientific program committee of IMCP was established,following the success of 2023 IMCP workshop and the space weather school,which was co-hosted with the Asia-Pacific Space Cooperation Organization(APSCO)and sponsored by Chinese Academy of Sciences(CAS)and Scientific Committee on Solar-Terrestrial Physics(SCOSTEP).Preparations are now underway for the 2024 workshop in collaboration with the National Institute for Space Research(INPE)in Brazil.展开更多
利用CASA模型(Carnegie-Ames-Stanford Approach)模拟石羊河流域2000—2020年植被净初级生产力(NPP),分析流域NPP的时空变化特征、稳定性和未来变化趋势,并从气候因素、地形因素和人类活动因素3个方面探讨对NPP的变化影响。结果表明:(1)...利用CASA模型(Carnegie-Ames-Stanford Approach)模拟石羊河流域2000—2020年植被净初级生产力(NPP),分析流域NPP的时空变化特征、稳定性和未来变化趋势,并从气候因素、地形因素和人类活动因素3个方面探讨对NPP的变化影响。结果表明:(1)2000—2020年石羊河流域植被NPP多年平均值为291.01 g C·m^(-2)·a^(-1),呈不显著增加趋势,空间分布呈南高北低的分布格局。(2)2000年以来植被NPP呈增加趋势的区域占总面积的86.4%,其中极显著增加和显著增加的区域分别占6.7%和10.1%。(3)NPP变化在中等波动以上(变异系数Cv≥0.25)的区域所占比例为50.4%。(4)从未来变化趋势看,石羊河流域植被NPP恢复的持续性较弱,呈增加并反持续的地区所占比例达到57.1%。(5)流域的植被NPP变化与气温、降水均成正相关,对气温的响应更为敏感。NPP随海拔高度和坡度增加呈现增大后减小趋势,近年来流域实施的一系列人工造林、退耕还林还草等措施对植被NPP的增加具有明显促进作用。展开更多
The Earth is buffered from the ferocious onslaught of the solar wind by a thin layer of matter known as the atmosphere and geospace.This layer absorbs energy from irradiance and outburst from the Sun,as well as from d...The Earth is buffered from the ferocious onslaught of the solar wind by a thin layer of matter known as the atmosphere and geospace.This layer absorbs energy from irradiance and outburst from the Sun,as well as from disasters,transient phenomena and anthropogenic emissions originated from Earth.Through complicated physics,the absorbed energy changes the atmospheric and geospace state and sometimes gets re-released to power extreme events such as space weather.Taking place globally,these complicated processes cannot be understood unless they are studied globally.The Chinese scientists have proposed the International Meridian Circle Program(IMCP)to meet this demand.By operating nearly 1000 instruments encompassing all latitudes along with the 120°E–60°W longitudes,IMCP aims,for the first time,to construct comprehensive 3D data representation of the atmosphere and geospace on a global scale and empower interdisciplinary research to tackle key questions related to Earth’s environment and climate change.展开更多
Based on the Chinese Meridian Project(CMP),the International Meridian Circle Program(IMCP)aims to coordinate the deployment of a comprehensive ground-based monitoring network along the 120°E-60°W Great Merid...Based on the Chinese Meridian Project(CMP),the International Meridian Circle Program(IMCP)aims to coordinate the deployment of a comprehensive ground-based monitoring network along the 120°E-60°W Great Meridian Circle to track the propagation and evolution of space weather events from the Sun to the Earth,as well as the imprints of other major natural and anthropic hazards on the ionosphere,the middle and upper atmosphere.Currently,we have completed the IMCP headquarters building in Beijing and established the China-Brazil Joint Laboratory for Space Weather in cooperation with Brazil.Meanwhile,the Chinese Meridian Project PhaseⅡand different components of the IMCP observation system are under construction.展开更多
The Meridian Project is a ground-based network program to monitor solar-terrestrial space environment,which consists of a chain of 15 ground-based observatories located roughly along 120°E longitude and 30°N...The Meridian Project is a ground-based network program to monitor solar-terrestrial space environment,which consists of a chain of 15 ground-based observatories located roughly along 120°E longitude and 30°N latitude.The Meridian project started in 2008,and its construction was completed by 2011.The integration and test phase of the Meridian Project conducted in 2011 demonstrated its observation capabilities as expected.The project will be in full operation in 2012. This report gives an overview of the recent development and preliminary results of the Meridian Project since 2010.展开更多
基金Supported by International Meridian Circle Program Headquarters,China-Brazil Joint Laboratory for Space Weather(Y42347A99S)。
文摘In 2024,the Chinese Meridian Project(CMP)completed its construction,deploying 282 instruments across 31 stations.This achievement not only provides a robust foundation but also serves as a reference template for the International Meridian Circle Program(IMCP).The IMCP aims to integrate and establish a comprehensive network of ground-based monitoring stations designed to track the propagation of space weather events from the Sun to Earth.Additionally,it monitors various disturbances generated within the Earth system that impact geospace.Over the past two years,significant progress has been made on the IMCP.In particular,the second phase of construction for the China-Brazil Joint Laboratory for Space Weather has been completed,and the North Pole and Southeast Asia networks are under active construction.The 2024 IMCP joint observation campaign was successfully conducted.To facilitate these developments,the scientific program committee of IMCP was established,following the success of 2023 IMCP workshop and the space weather school,which was co-hosted with the Asia-Pacific Space Cooperation Organization(APSCO)and sponsored by Chinese Academy of Sciences(CAS)and Scientific Committee on Solar-Terrestrial Physics(SCOSTEP).Preparations are now underway for the 2024 workshop in collaboration with the National Institute for Space Research(INPE)in Brazil.
文摘利用CASA模型(Carnegie-Ames-Stanford Approach)模拟石羊河流域2000—2020年植被净初级生产力(NPP),分析流域NPP的时空变化特征、稳定性和未来变化趋势,并从气候因素、地形因素和人类活动因素3个方面探讨对NPP的变化影响。结果表明:(1)2000—2020年石羊河流域植被NPP多年平均值为291.01 g C·m^(-2)·a^(-1),呈不显著增加趋势,空间分布呈南高北低的分布格局。(2)2000年以来植被NPP呈增加趋势的区域占总面积的86.4%,其中极显著增加和显著增加的区域分别占6.7%和10.1%。(3)NPP变化在中等波动以上(变异系数Cv≥0.25)的区域所占比例为50.4%。(4)从未来变化趋势看,石羊河流域植被NPP恢复的持续性较弱,呈增加并反持续的地区所占比例达到57.1%。(5)流域的植被NPP变化与气温、降水均成正相关,对气温的响应更为敏感。NPP随海拔高度和坡度增加呈现增大后减小趋势,近年来流域实施的一系列人工造林、退耕还林还草等措施对植被NPP的增加具有明显促进作用。
基金Supported by Beijing Municipal Science and Technology Commission(Z181100002918001)。
文摘The Earth is buffered from the ferocious onslaught of the solar wind by a thin layer of matter known as the atmosphere and geospace.This layer absorbs energy from irradiance and outburst from the Sun,as well as from disasters,transient phenomena and anthropogenic emissions originated from Earth.Through complicated physics,the absorbed energy changes the atmospheric and geospace state and sometimes gets re-released to power extreme events such as space weather.Taking place globally,these complicated processes cannot be understood unless they are studied globally.The Chinese scientists have proposed the International Meridian Circle Program(IMCP)to meet this demand.By operating nearly 1000 instruments encompassing all latitudes along with the 120°E–60°W longitudes,IMCP aims,for the first time,to construct comprehensive 3D data representation of the atmosphere and geospace on a global scale and empower interdisciplinary research to tackle key questions related to Earth’s environment and climate change.
基金Supported by the International Partnership Program of Chinese Academy of Sciences(183311KYSB20200003)。
文摘Based on the Chinese Meridian Project(CMP),the International Meridian Circle Program(IMCP)aims to coordinate the deployment of a comprehensive ground-based monitoring network along the 120°E-60°W Great Meridian Circle to track the propagation and evolution of space weather events from the Sun to the Earth,as well as the imprints of other major natural and anthropic hazards on the ionosphere,the middle and upper atmosphere.Currently,we have completed the IMCP headquarters building in Beijing and established the China-Brazil Joint Laboratory for Space Weather in cooperation with Brazil.Meanwhile,the Chinese Meridian Project PhaseⅡand different components of the IMCP observation system are under construction.
基金Supported by National Basic Research Program of China(2012CB825602)
文摘The Meridian Project is a ground-based network program to monitor solar-terrestrial space environment,which consists of a chain of 15 ground-based observatories located roughly along 120°E longitude and 30°N latitude.The Meridian project started in 2008,and its construction was completed by 2011.The integration and test phase of the Meridian Project conducted in 2011 demonstrated its observation capabilities as expected.The project will be in full operation in 2012. This report gives an overview of the recent development and preliminary results of the Meridian Project since 2010.
