本文使用中国科学院国家空间科学中心——子午工程朔州观测站的全天空气辉成像数据,以及FY-2气象卫星云顶亮温数据(Black Body Temperature,TBB),气象再分析数据和地闪数据,研究了2013年8月10日(LT)发生在内蒙古地区的雷暴活动激发的中...本文使用中国科学院国家空间科学中心——子午工程朔州观测站的全天空气辉成像数据,以及FY-2气象卫星云顶亮温数据(Black Body Temperature,TBB),气象再分析数据和地闪数据,研究了2013年8月10日(LT)发生在内蒙古地区的雷暴活动激发的中高层环状重力波(Concentric Gravity Waves,CGWs)事件.根据最小二乘法的拟合结果和色散关系理论曲线,确定了激发中高层环状重力波的强对流系统,该对流中心位于内蒙古自治区中部(108.9°E,40.47°N),重力波激发于雷暴初期,此时TBB低于220K的深对流面积较小,随着时间的推移,该次雷暴活动越来越强,深对流面积在23∶00达到最大,在23∶30—24∶00LT时闪电频数最高,达到120.7fl/min,随后深对流逐渐消散.在中高层87km处OH(羟基)气辉层观测到的一次CGWs事件的两组波纹,分别沿水平方向传播了149.64km和174.25km,相应位置处的水平波长分别为12.67km和16.75km,周期分别为8.56 min和10.72min,激发时间分别为19∶34LT和19∶40LT;随着水平传播距离的增加,CGWs水平波长增大.展开更多
The Chinese Meridian Project is a ground-based space environment monitoring network,which is constructed in two steps.The first step(Phase I)of the project consists of 15 observation stations located roughly along 120...The Chinese Meridian Project is a ground-based space environment monitoring network,which is constructed in two steps.The first step(Phase I)of the project consists of 15 observation stations located roughly along 120°E longitude and 30°N latitude.The second step(Phase II)of the project will additionally deploy 16 stations to better cover China’s territory,and build a stereo monitoring capability to monitor the cause and effect of the space weather chain in the solar terrestrial system.Based on the existing two monitoring chains in Phase I,two more chains will be established along 100°E longitude and 40°N latitude,respectively,forming a double-cross network configuration.After the two-step construction,the whole project will run nearly 300 instruments deployed at 31 stations.Aside from standard instruments,quite a few innovative and powerful instruments will be developed,such as radioheliographs with a very wide frequency band,a 3-station incoherent scattering radar to make a 3D measurement of the ionosphere,and a helium lidar to measure atmosphere density up to an altitude of 1000 km.展开更多
This paper summarizes the results of the researches on the middle and upper atmosphere obtained by Chinese scientists in 2008-2010.The focuses are specifically placed on the researches being associated with ground-bas...This paper summarizes the results of the researches on the middle and upper atmosphere obtained by Chinese scientists in 2008-2010.The focuses are specifically placed on the researches being associated with ground-based observation capability development,dynamical processes,the property of atmospheric circulation and the chemistry-climate coupling of the middle atmospheric layers.展开更多
In this report we summarize the research results by Chinese scientists in 2012–2014. The focuses are placed on the researches of the middle and upper atmosphere, specifically the researches related to ground-based ob...In this report we summarize the research results by Chinese scientists in 2012–2014. The focuses are placed on the researches of the middle and upper atmosphere, specifically the researches related to ground-based observation capability development, dynamical processes, the property of circulation and chemistry-climate coupling of the middle atmospheric layers.展开更多
A future Chinese mission is introduced to study the coupling between magnetosphere,ionosphere and thermosphere,i.e.the Magnetosphere-Ionosphere-Thermosphere Coupling Small Satellite Constellation(MIT).The scientific o...A future Chinese mission is introduced to study the coupling between magnetosphere,ionosphere and thermosphere,i.e.the Magnetosphere-Ionosphere-Thermosphere Coupling Small Satellite Constellation(MIT).The scientific objective of the mission is to focus on the outflow ions from the ionosphere to the magnetosphere.The constellation is planning to be composed of four small satellites;each small satellite has its own orbit and crosses the polar region at nearly the same time but at different altitude.The payloads onboard include particle detectors,electromagnetic payloads,auroral imagers and neutral atom imagers.With these payloads,the mission will be able to investigate acceleration mechanism of the upflow ions at different altitudes.Currently the orbits have been determined and prototypes of some have also been completed.Competition for next phase selection is scheduled in late 2015.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
The Chinese Meridian Project is a ground-based space environment monitoring facility in China.The first phase of the project has been put into formal operation since 2012 after 4-year’s construction.It consists of 15...The Chinese Meridian Project is a ground-based space environment monitoring facility in China.The first phase of the project has been put into formal operation since 2012 after 4-year’s construction.It consists of 15 observatories located roughly along 120°E longitude and 30°N latitude,with each observatory equipped with multiple instruments to monitor space environment.Based on the huge observational data accumulated,significant scientific achievements have been made with more than 300 peer-reviewed journal papers published.In this report,scientific results from the past two years have been reviewed with topics covering fields of geomagnetic,atmosphere,ionosphere,and their responses to solar activities.The excellent achievements from the Phase I of Chinese Meridian Project lay a good foundation for Phase II,which has already been approved with the official kick-off of construction in November 2019.It will conceive an unprecedented contribution to global space weather community from China.展开更多
文摘The Chinese Meridian Project is a ground-based space environment monitoring network,which is constructed in two steps.The first step(Phase I)of the project consists of 15 observation stations located roughly along 120°E longitude and 30°N latitude.The second step(Phase II)of the project will additionally deploy 16 stations to better cover China’s territory,and build a stereo monitoring capability to monitor the cause and effect of the space weather chain in the solar terrestrial system.Based on the existing two monitoring chains in Phase I,two more chains will be established along 100°E longitude and 40°N latitude,respectively,forming a double-cross network configuration.After the two-step construction,the whole project will run nearly 300 instruments deployed at 31 stations.Aside from standard instruments,quite a few innovative and powerful instruments will be developed,such as radioheliographs with a very wide frequency band,a 3-station incoherent scattering radar to make a 3D measurement of the ionosphere,and a helium lidar to measure atmosphere density up to an altitude of 1000 km.
基金Supported by the National Natural Sciences Foundation of China under grant (40830102,40333034)the Knowledge Innovation Project of Chinese Academy of Sciences under Grant (KZCX2-YW-123)
文摘This paper summarizes the results of the researches on the middle and upper atmosphere obtained by Chinese scientists in 2008-2010.The focuses are specifically placed on the researches being associated with ground-based observation capability development,dynamical processes,the property of atmospheric circulation and the chemistry-climate coupling of the middle atmospheric layers.
文摘In this report we summarize the research results by Chinese scientists in 2012–2014. The focuses are placed on the researches of the middle and upper atmosphere, specifically the researches related to ground-based observation capability development, dynamical processes, the property of circulation and chemistry-climate coupling of the middle atmospheric layers.
基金Supported by the Strategic Priority Research Program on Space Science(XDA04060201)of Chinese Academy of Sciencesthe Chinese Academy of Sciences"Hundred Talented Program"(Y32135A47S)+2 种基金the Chinese National Science Foundation(411774149)the Specialized Research Fund for State Key laboratory of Chinathe Chinese Academy of Sciences Visiting Fellowship for Researchers from Developing Countries
文摘A future Chinese mission is introduced to study the coupling between magnetosphere,ionosphere and thermosphere,i.e.the Magnetosphere-Ionosphere-Thermosphere Coupling Small Satellite Constellation(MIT).The scientific objective of the mission is to focus on the outflow ions from the ionosphere to the magnetosphere.The constellation is planning to be composed of four small satellites;each small satellite has its own orbit and crosses the polar region at nearly the same time but at different altitude.The payloads onboard include particle detectors,electromagnetic payloads,auroral imagers and neutral atom imagers.With these payloads,the mission will be able to investigate acceleration mechanism of the upflow ions at different altitudes.Currently the orbits have been determined and prototypes of some have also been completed.Competition for next phase selection is scheduled in late 2015.
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 Open Research Project of Large Research Infrastructures of Chinese Academy of Sciences,the Study on the Interaction between Low/Mid-latitude Atmosphere and Ionosphere Based on the Chinese Meridian Project,and the Chinese Meridian Project。
文摘The Chinese Meridian Project is a ground-based space environment monitoring facility in China.The first phase of the project has been put into formal operation since 2012 after 4-year’s construction.It consists of 15 observatories located roughly along 120°E longitude and 30°N latitude,with each observatory equipped with multiple instruments to monitor space environment.Based on the huge observational data accumulated,significant scientific achievements have been made with more than 300 peer-reviewed journal papers published.In this report,scientific results from the past two years have been reviewed with topics covering fields of geomagnetic,atmosphere,ionosphere,and their responses to solar activities.The excellent achievements from the Phase I of Chinese Meridian Project lay a good foundation for Phase II,which has already been approved with the official kick-off of construction in November 2019.It will conceive an unprecedented contribution to global space weather community from China.
