检索结果-南通市图书馆

Strengthening the three-dimensional comprehensive observation system of multi-layer interaction on the Tibetan Plateau to cope with the warming and wetting trend

在线全文

学校读者我要写书评

暂无评论

Atmospheric and Oceanic Science Letters 2022年第4期15卷 67-71页

作者： yaoming ma Binbin Wang Xuelong Chen Lei Zhong Zeyong Hu Weiqiang ma Cunbo Han maoshan Li Land–Atmosphere Interaction and its Climatic Effects Group State Key Laboratory of Tibetan Plateau Earth SystemResources and Environment(TPESRE)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijingChina College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijingChina College of Atmospheric Science Lanzhou UniversityLanzhouChina National Observation and Research Station for Qomolongma Special Atmospheric Processes and Environmental Changes DingriChina Kathmandu Center of Research and Education Chinese Academy of SciencesBeijingChina China–Pakistan Joint Research Center on Earth Sciences Chinese Academy of SciencesIslamabadPakistan School of Earth and Space Sciences University of Science and Technology of ChinaHefeiChina CAS Center for Excellence in Comparative Planetology USTCHefeiChina Frontiers Science Center for Planetary Exploration and Emerging Technologies University of Science and Technology of ChinaHefeiChina Jiangsu Collaborative Innovation Center for Climate Change NanjingChina Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouChina School of Atmospheric Science Chengdu University of Information TechnologyChengduChina

青藏高原的水循环变化对于高原及其下游区域人类的生产生活具有举足轻重的影响.在高原暖湿化的背景下,其水文循环加快,极端天气和自然灾害事件概率增大,比如,雪灾,洪水,滑坡,泥石流,冰崩在山区频发.因此,如何准确的估算青藏高原水循环... 详细信息

青藏高原的水循环变化对于高原及其下游区域人类的生产生活具有举足轻重的影响.在高原暖湿化的背景下,其水文循环加快,极端天气和自然灾害事件概率增大,比如,雪灾,洪水,滑坡,泥石流,冰崩在山区频发.因此,如何准确的估算青藏高原水循环各分量的大小及变化幅度是评估高原环境变化影响亟需解决的科学问题.根据水在各圈层间转换过程,我们提出了建立第三极地区(尤其是复杂山区)的三维立体多圈层地气相互作用综合观测系统(包括涡动相关系统,行星边界层塔,微波辐射计,风廓线仪和无线电探空系统观测的风温湿廓线及云雨雷达等)的紧迫性和具体方案,进而为研究青藏高原环境变化和山区灾害预测服务.

关键词：高原变暖变湿水文循环三维立体多圈层相互作用综合观测系统山区灾害应对青藏高原

Effects of surface heating on precipitation over the Tibetan Plateau and its eastern margin

在线全文

学校读者我要写书评

暂无评论

Research in Cold and Arid Regions 2023年第5期15卷 230-238页

作者： maoShan Li YuChen Liu Zhao Lv YongHao Jiang Pei Xu yaoming ma FangLin Sun School of Atmospheric Sciences Plateau Atmosphere and Environment Key Laboratory of Sichuan ProvinceChengdu Plain Urban Meteorology and Environment Observation and Research Station of Sichuan ProvinceChengdu University of Information TechnologyChengduSichuan 610225China Heilongjiang Branch of CAAC Northeast Regional Administration HarbinHeilongjiang 150079China Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of SciencesCAS Center for Excellence in Tibetan Plateau Earth SciencesBeijing 100101China Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions Chinese Academy of SciencesLanzhouGansu 730000China

The high terrain of the Tibetan Plateau(TP)has a very important impact on the weather and climate of China,East Asia,South Asia,and even the Northern ***,in recent years,the reasons for the decrease in precipitation in the southeastern edge of the plateau have resulted in cutting-edge research regarding the impact of the TP and its surrounding areas on downstream weather and *** this study,the spatial and temporal distribution of surface heat flux and precipitation were analyzed from 1998 to 2022,and the possible mechanism of the decrease of precipitation in the eastern edge of the plateau is *** main conclusions are as follows:The annual average sensible heat flux in the TP and its east side is positive,with an average of 33.73 W/m^(2).The annual average latent heat flux is positive,with an average of 42.71 W/m^(2).Precipitation has a similar annual average and seasonal distribution,with modest amounts in the northwest and substantial amounts in the *** average annual accumulated precipitation is 670.69 *** first mode of the Empirical Orthogonal Function(EOF)shows that sensible heat flux decreases first,then increases,and then finally decreases during 1998–*** modes show the opposite trend in middle part of the *** latent heat flux initially decreases,then increases,and finally decreases in the western plateau and near Sichuan *** mode,however,displays the opposite tendency throughout the rest of the *** precipitation in the north and south sides of the plateau has decreased since 2013,which is consistent with the changing trend of sensible heat *** the rest of the region,the change trend is not *** sensible heat of the main body of the plateau and its east side and Sichuan Basin is negatively correlated with precipitation,that is,when sensible heat flux of the main body of the plateau and its east side and Sichuan Basin is more(less),local precipitation is less(more).The latent heat

关键词： The Tibetan Plateau Surface heating Precipitation EOF Singular value decomposition(SVD)

Comparison of Different Generation Mechanisms of Free Convection between Two Stations on the Tibetan Plateau

在线全文

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 2018年第9期35卷 1137-1144页

作者： Lang ZHANG yaoming ma Weiqiang ma Binbin WANG Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China CAS Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of SciencesBeijing 100101China

Based on high-quality data from eddy covariance measurements at the Qomolangma Monitoring and Research Station for Atmosphere and Environment（QOMS） and the Southeast Tibet Monitoring and Research Station for Environment（SETS）,near-ground free convection conditions（FCCs） and their characteristics are investigated. At QOMS, strong thermal effects accompanied by lower wind speeds can easily trigger the occurrence of FCCs. The change of circulation from prevailing katabatic glacier winds to prevailing upslope winds and the oscillation of upslope winds due to cloud cover are the two main causes of decreases in wind speed at QOMS. The analysis of results from SETS shows that the most important trigger mechanism of FCCs is strong solar heating. Turbulence structural analysis using wavelet transform indicates that lowerfrequency turbulence near the ground emerges from the detected FCCs both at QOMS and at SETS. It should be noted that the heterogeneous underlying surface at SETS creates large-scale turbulence during periods without the occurrence of FCCs. Regarding datasets of all seasons, the distribution of FCCs presents different characteristics during monsoonal and non-monsoonal periods.

关键词： free convection conditions eddy covariance complex terrain Tibetan Plateau

Variations of Surface Heat Fluxes over the Tibetan Plateau before and after the Onset of the South Asian Summer Monsoon during 1979–2016

在线全文

学校读者我要写书评

暂无评论

Journal of Meteorological Research 2019年第3期33卷 491-500页

作者： Yizhe HAN Weiqiang ma yaoming ma Cuiyan SUN Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100101 University of Chinese Academy of Sciences Beijing 100049 Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of Sciences Beijing 100101 Meteorological Observatory Shandong Sub-Bureau of Air Traffic Management Bureau Civil Aviation Administration of China Jinan 250107

As the "Third Pole of the World," the Tibetan Plateau (TP) is an important thermal forcing to the South Asian summer monsoon (ASM) and even the global atmospheric circulation. In this paper, surface heat fluxes from the ERA-Interim reanalysis data during march-October of 1979-2016 in the TP and its surrounding areas are examined and analyzed. The results are as follows.(1) From march to may (before the ASM onset), the main body of the TP is dominated by sensible heat flux, which increases rapidly with high (low) values in the west (east), while the change of latent heat flux is small but it increases with time.(2) From June to August (after the ASM onset), sensible heat flux over the TP decreases, while latent heat flux increases rapidly with high (low) values in the east (west).(3) From September to October (after the ASM withdrawal), sensible and latent heat fluxes are comparable to each other in strength, again with high (low) sensible heat flux in the west (east).(4) During 1979-2016, surface sensible heat flux in the whole TP shows a slightly downward trend, while latent heat flux shows an increasing trend. Specifically, in the western TP, sensible (latent) heat flux shows a weak decreasing (an increasing) trend;while in the eastern TP, sensible (latent) heat flux decreases (increases obviously). These variations are consistent with the observed warming and moistening in the TP region. The above results are useful for further analysis of the change of atmospheric heat sources and surface heat fluxes over the TP based on the data from the Third Tibetan Plateau Atmospheric Science Experiment (TIPEX-Ⅲ).

关键词： Tibetan Plateau (TP) reanalysis data sensible heat flux latent heat flux

Earth Summit Mission 2022:Scientific Expedition and Research on *** Helps Reveal the Synergy between Westerly Winds and Monsoon and the Resulting Climatic and Environmental Effects

在线全文

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 2023年第2期40卷 187-193页

作者： yaoming ma Weiqiang ma Huaguang DAI Lei ZHANG Fanglin SUN Jinqiang ZHANG Nan YAO Jianan HE Zhixuan BAI Yuejian XUAN Yunshuai ZHANG Yuan YUAN Chenyi YANG Weijun SUN Ping ZHAO Minghu DING Kongju ZHU Jie HU Bian Bazhuga Bai Juepingcuo Zhuo ma Ren Qingnima Suo Langwangdui Yang Zong Haikun WEN Land-Atmosphere Interaction and its Climatic Effects Group State Key Laboratory of Tibetan Plateau Earth SystemResources and Environment(TPESRE)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China College of Atmospheric Science Lanzhou UniversityLanzhou 730000China National Observation and Research Station for Qomolongma Special Atmospheric Processes and Environmental Changes Dingri 858200China Kathmandu Center of Research and Education Chinese Academy of SciencesBeijing 100101China China-Pakistan Joint Research Center on Earth Sciences Chinese Academy of SciencesIslamabad 45320Pakistan Meteorological Observatory of Tibetan Autonomous Region Lhasa 850000China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081China Northwest Institute of Eco-Environment and Resources Chinese Academy of SciencesLanzhou 730000China Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China College of Geography and Environment Shandong Normal UniversityJinan 250014China Meteorological Bureau of Tingri County Tingri 858200China Nanjing Institute of Astronomical Optics&Technology National Astronomical ObservatoriesChinese Academy of SciencesNanjing 210042China

“Earth summit mission 2022”is one of the landmark scientific research activities of the Second Tibetan Plateau Scientific Expedition and Research(STEP).This scientific expedition firstly used advanced technology and methods to detect vertical meteorological elements and produce forecasts for mountain ***“Earth summit mission 2022”Qomolangma scientific expedition exceeded an altitude of over 8000 meters for the first time and carried out a comprehensive scientific investigation mission on the summit of *** the participants,the westerly–monsoon synergy and influence team stationed in the *** region had two tasks:1)detecting the vertical structure of the atmosphere for parameters such as wind,temperature,humidity,and pressure with advanced instruments for high-altitude detection at the *** base camp;and 2)observing extreme weather processes to ensure that members of the mountaineering team could successfully reach the *** this scientific expedition,a better understanding of the vertical structure and weather characteristics of the complex area of *** is gained.

关键词： Earth altitude weather

Determination of Land Surface Heat Fluxes at Different Temporal Scales over the Tibetan Plateau

在线全文

学校读者我要写书评

暂无评论

Journal of Geodesy and Geoinformation Science 2021年第1期4卷 144-152页

作者： yaoming ma Lei ZHONG Weiqiang ma Cunbo HAN Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau Researchthe Chinese Academy of SciencesBeijing 100101China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101China University of Chinese Academy of Sciences Beijing 100049China School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China

Surface energy budget components(such as net radiation flux,sensible heat flux,latent heat flux and soil heat flux)at multiple temporal scales have significant meaning for understanding the energy and water cycle over the Tibetan Plateau(TP).In the framework of ESA-MOST Dragon Programme 4,the surface energy balance system(SEBS)was tested and used to derive surface heat fluxes at different temporal scales over the TP by a combination use of geostationary satellite(FY-2 C)data,polar orbiting satellite(SPOT/VGT,Terra/MODIS)data and ITPCAS forcing *** validation results show there is a good agreement between derived heat fluxes and in situ measurements from Third Pole Environment Observation and Research Platform(TPEORP),which means the feasibility to derive surface heat fluxes over heterogeneous landscapes by a combination use of geostationary and polar orbiting satellite data in *** diurnal,seasonal and inter-annual variation characteristics were also clearly identified through analyses of derived turbulent fluxes.

关键词： sensible heat flux latent heat flux parameterization the Tibetan Plateau

Air Temperature Estimation with MODIS Data over the Northern Tibetan Plateau

在线全文

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 2017年第5期34卷 650-662页

作者： Fangfang HUANG Weiqiang ma Binbin WANG Zeyong HU yaoming ma Genhou SUN Zhipeng XIE Yun LIN Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences Lanzhou 730000 China Gansu Meteorological Information and Technology Support Center Gansu Meteorological Bureau Lanzhou 730020 China Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100101 China Chinese Academy of Sciences Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101 China

Time series of MODIS land surface temperature(Ts) and normalized difference vegetation index(NDVI) products,combined with digital elevation model(DEM) and meteorological data from 2001 to 2012,were used to map the spatial distribution of monthly mean air temperature over the Northern Tibetan Plateau(NTP). A time series analysis and a regression analysis of monthly mean land surface temperature(Ts) and air temperature(Ta) were conducted using ordinary linear regression(OLR) and geographical weighted regression(GWR). The analyses showed that GWR,which considers MODIS Ts,NDVI and elevation as independent variables,yielded much better results [RAdj2> 0.79; root-mean-square error(RMSE) =0.51℃–1.12℃] associated with estimating Tacompared to those from OLR(RAdj2= 0.40-0.78; RMSE = 1.60℃–4.38℃).In addition,some characteristics of the spatial distribution of monthly Taand the difference between the surface and air temperature(Td) are as follows. According to the analysis of the 0℃ and 10℃ isothermals,Tavalues over the NTP at elevations of 4000–5000 m were greater than 10℃ in the summer(from may to October),and Tavalues at an elevation of3200 m dropped below 0℃ in the winter(from November to April). Taexhibited an increasing trend from northwest to southeast. Except in the southeastern area of the NTP,T d values in other areas were all larger than 0℃ in the winter.

关键词： air temperature estimation MODIS land surface temperature geographical weighted regression Northern Tibetan Plateau

Local meteorology in a northern Himalayan valley near Mount Everest and its response to seasonal transitions

在线全文

学校读者我要写书评

暂无评论

Research in Cold and Arid Regions 2018年第6期10卷 493-501页

作者： FangLin Sun yaoming ma ZeYong Hu Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences Lanzhou Gansu 730000 China China University of Chinese Academy of Sciences Beijing 100049 China Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of Sciences Beijing 100101 China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101 China

An automatic weather station(AWS) has been installed at the Qomolangma Station of the China Academy of Sciences(QOMS) since 2005, in a northern Himalayan valley near Mount Everest, with an altitude of 4,270 m a.s.l.. Nine years of meteorological records(2006–2014) from the automatic weather station(AWS) were analyzed in this study, aiming to understand the response of local weather to the seasonal transition on the northern slopes of Mount Everest, with consideration of the movement of the subtropical jet(STJ) and the onset of the Indian Summer Monsoon(ISM). We found:(1) Both the synoptic circulation and the orography have a profound influence on the local weather, especially the local circulation.(2) Southwesterly(SW) and southeasterly(SE) winds prevail alternately at QOMS in the afternoon through the year. The SW wind was driven by the STJ during the non-monsoon months, while the SE was induced by the trans-Himalayan flow through the Arun Valley, a major valley to the east of Mount Everest, under a background of weak westerly winds aloft.(3) The response of air temperature(T) and specific humidity(q) to the monsoon onset is not as marked as that of the nearsurface winds. The q increases gradually and reaches a maximum in July when the rainy period begins.(4) The alternation between the SW wind at QOMS and the afternoon SE wind in the pre-monsoon season signals the northward shift of the STJ and imminent monsoon onset. The average interval between these two events is 14 days.

关键词： mountain meteorology monsoon onset Trans-Himalayan flow orography influence

Estimations of Land Surface Characteristic Parameters and Turbulent Heat Fluxes over the Tibetan Plateau Based on FY-4A/AGRI Data

在线全文

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 2021年第8期38卷 1299-1314页

作者： Nan GE Lei ZHONG yaoming ma Yunfei FU Mijun ZOU Meilin CHENG Xian WANG Ziyu HUANG School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Comparative Planetology Hefei 230026China Jiangsu Collaborative Innovation Center for Climate Change Nanjing 210023China Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of ScienceBeijing 100101China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101China College of Earth and Planetary Sciences University of Chinese Academy of ScienceBeijing 100049China

Accurate estimates of land surface characteristic parameters and turbulent heat fluxes play an important role in the understanding of land-atmosphere interaction. In this study, Fengyun-4A (FY-4A) Advanced Geostationary Radiation Imager (AGRI) satellite data and the China Land Data Assimilation System (CLDAS) meteorological forcing dataset CLDAS-V2.0 were applied for the retrieval of broadband albedo, land surface temperature (LST), radiation flux components, and turbulent heat fluxes over the Tibetan Plateau (TP). The FY-4A/AGRI and CLDAS-V2.0 data from 12 march 2018 to 30 April 2018 were first used to estimate the hourly turbulent heat fluxes over the TP. The time series data of in-situ measurements from the Tibetan Observation and Research Platform were divided into two halves-one for developing retrieval algorithms for broadband albedo and LST based on FY-4A, and the other for the cross validation. Results show the root-mean-square errors (RMSEs) of the FY-4A retrieved broadband albedo and LST were 0.0309 and 3.85 K, respectively, which verifies the applicability of the retrieval method. The RMSEs of the downwelling/upwelling shortwave radiation flux and downwelling/upwelling longwave radiation flux were 138.87/32.78 W m^(−2) and 51.55/17.92 W m^(−2), respectively, and the RMSEs of net radiation flux, sensible heat flux, and latent heat flux were 58.88 W m^(−2), 82.56 W m^(−2) and 72.46 W m^(−2), respectively. The spatial distributions and diurnal variations of LST and turbulent heat fluxes were further analyzed in detail.

关键词： FY-4A/AGRI land surface characteristic parameters turbulent heat fluxes Surface Energy Balance System model Tibetan Plateau