鲅鱼圈地区污染气象特征分析   总被引：10，自引：6，他引：4       下载免费PDF全文

刘翠玲  常艳君 《气象与环境学报》2006,22(1):29-33

利用近3a的鲅鱼圈地区地面常规气象资料和2005年3～4月鲅鱼圈地区低空污染气象探测资料,分析了鲅鱼圈地区低空污染气象特征。结果表明:鲅鱼圈地区各类型风速廓线出现频率比较均匀,而且由于地面粗糙度较大,因此风速廓线指数比平原地区稍大。  相似文献   

辽宁省高速公路气象保障服务系统设计与展望          下载免费PDF全文

卢娟  郭刚  邢江月  张纯  唐亚平  万志强 《气象与环境学报》2007,23(2):50-53

为了提高辽宁省高速公路的气象保障服务能力,提出了建立辽宁高速公路气象保障服务系统的设想。分析了辽宁及国内外的高速公路气象保障的研究概况,在此基础上,根据高速公路管理部门对于气象保障服务的实际需求,认为建立高速公路气象保障服务系统应合理布设和增加高速公路沿线的自动气象监测站点,要以气象部门信息网络为依托,以气象数据库、预报技术平台、预报技术方法为基础,有针对性地开发高速公路气象预报预警模式和决策系统,并提出了建立高速公路信息反馈及损毁评估平台的设想,试图为提高高速公路气象服务水平提供技术支撑。  相似文献   

Identifying the source of atmospheric moisture over arid deserts using stable isotopes (2H and 18O) in precipitation          下载免费PDF全文

Wenbo Rao  Wenbing Zhang  Bin Yong  Hongbing Tan  Karina T. Meredith  Ke Jin  Fangwen Zheng  Shuai Wang 《水文研究》2018,32(3):436-449

Precipitation is a major component of the hydrologic cycle in arid desert areas. To date, however, few studies have been conducted on investigating the isotope characteristics and moisture sources of precipitation in arid desert environments. The Alxa Desert Plateau is a critical arid desert area in North China. This study is the first to analyse the stable isotopic composition of precipitation to identify the sources of atmospheric moisture over this plateau. Our results show that the δD and δ¹⁸O values of precipitation across the plateau change greatly at both daily and monthly timescales, and exhibit seasonal variations. Among the main meteorological parameters, atmospheric temperature is the most predominant factor controlling the isotopic composition and the δD–δ¹⁸O relationship of local precipitation. Analyses of the precipitation isotopes with the Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model reveal that (a) the westerly and polar moisture sources are the dominant controls on summer and winter precipitation and (b) the evaporation of local lake water significantly affects winter precipitation even though it only represents a small amount. Based on the isotope data of 2013–2016 precipitation, a local meteoric water line (LMWL) is derived: δD = (8.20 ± 0.22)·δ¹⁸O + (8.15 ± 2.16)‰ for the study site. Compared to the global meteoric water line, the LMWL has a greater slope and lower d‐excess. This can be explained by admixing of atmospheric moisture resulting from the evaporation of local lake water. Based on this LMWL, we are able to trace that groundwater of the Badain Jaran Desert originates from the surrounding mountains with altitudes of <4,000 m. The newly derived LMWL shows that the recharge altitudes of desert groundwater are overestimated on the basis of the previous LMWLs. This study not only provides insights into the hydrological cycle but also offers guidance for water resource management in arid desert areas of China. Additionally, this study provides techniques that can be applied to the analyses of precipitation isotopes in similar arid regions of the world.  相似文献   

动力气象试题库微机管理系统     

李国平  邓玲 《成都信息工程学院学报》1996,(Z1)

介绍了一个用汉字ＦＯＸＢＡＳＥ＋语开发的动力气象试题库微机管理系统，着重阐述了动力气象试题库微机管理系统的设计思想及实施方案；系统的结构和功能；系统的数据库设计；实现该系统所实施的技术及编程中的有关特点以及系统的使用。  相似文献   

BOOK REVIEWS     

《The Professional geographer》1985,37(1):104-132

Books Reviewed in this article: Lob Trees in the Wilderness . Clifford and Isabel Ahlgren . Satellite Microwave Remote Sensing . T. D. Allan , ed. Sunbelt Cities: Politics and Growth Since World War II . Richard M. Bernard and Bradley R. Rice , eds. Legacy of Minneapolis: Preservation Amid Change . John R. Borchert , David Gebhard , David Lanegran , and Judith A. Martin . Bloomington, MN: Preparing a Historic Preservation Ordinance. Richard J. Roddewig . The Mountains of Northeastern Tasmania, A Study of Alpine Geomorphology . Nel Caine . Introductory Cartography . John Campbell . Englewood Cliffs, NJ: Changing Climate . Manual of Remote Sensing, Second Edition . 2 Vols. Robert N. Colwell , ed.-in-chief; David S. Simonett and John E. Estes , vol. eds. Remote Sensing in Meteorology, Oceanography and Hydrology . A. P. Cracknell , ed. Multidimensional Scaling . Mark L. Davison . Environmental Karst . Percy H. Dougherty , ed. The Urban Environment . Ian Douglas . Geomorphology of Europe . Clifford Embleton , ed. An Introduction to South Asia . B. H. Farmer . Great Geological Controversies . A. Hallam . Hazardous Waste Management: In Whose Backyard? Michalann Harthill , ed. Energy for Subsistence . Margaret Haswell . Perspective on Ratzel's Political Geography . James M. Hunter . Economic Deposits and their Tectonic Setting . Charles S. Hutchison . Energy Risk Assessment . Herbert Inhaber . Discovering the Vernacular Landscape . John Brinckerhoff Jackson . Climate and Energy Systems: A Review of Their Interactions . Jill Jäger . Dilemmas in Regional Policy . Antoni Kuklinski and J. G. Lambooy , eds. California Farmland: A History of Large Agricultural Landholdings . Ellen Liebman . The Spatial Organization of New Land Settlement in Latin America . Jacob O. Maos . Dark Continent: Africa as Seen by Americans . Michael McCarthy . Westport, CT: Climatology: An Introduction . John E. Oliver and John J. Hidore . Columbus, OH: The Geography of Warfare . Patrick O'Sullivan and Jesse W. Miller . The Expanding City. Essays in Honour of Professor Jean Gottmann . John Patten , ed. Scotland's Environment During the Last 30,000 Years . Robert J. Price . Integrated Urban Models . S. H. Putman . Development and the Environmental Crisis: Red or Green Alternatives? Michael Redclift .  相似文献   

P-T大气稳定度日夜分界限取值的研究     

孟庆珍  邓新民 《成都信息工程学院学报》1991,(2)

本文用两种不同日夜分界限统计了成都、重庆的P-T大气稳定度频率。结果表明,两种分界统计大气稳定度频率,不稳定类完全相同;以h=0分界比以h=k_1分界中性频率增加,稳定频率减少,两者频率差值大小与地理位置、气候和天气特征有关;这与理论分析完全符合。通过对比指出,h=0分界的应用有局限性。同时,通过计算表明,实际工作中,太阳赤纬σ每十日取一概略值已足够精确了。  相似文献   

宁夏智能化综合气象业务服务共享管理平台设计与实现     

杨有林  陈海波  王建林  杨侃  卫建国  马宁  李新庆 《气象》2018,44(7):961-968

文章按照标准化、集约化、智能化的理念,基于云端部署技术,提出了宁夏智能化综合气象业务服务共享管理平台的设计思路和总体架构,建设了宁夏气象基础数据库、业务产品库、服务产品库,构建了业务产品自动化生成系统、服务产品智能化制作系统、服务信息智慧型发布系统和信息共享与管理系统。通过数据存储、数据服务接口、数据资源管理、数据加工流程的标准化,设计了以标准化体系为基础的集约化数据环境。通过数据环境集约和业务系统集约,设计了以数据驱动为特征的集约化产品加工系统,形成统一的数据加工流水线。突出智能化要求,设计了以智能化为目标的数据分析算法和智能化系统运行控制,并在业务产品自动化生成、服务产品智能化制作、服务信息智慧型发布方面进行了探索。平台设计理念先进,技术前沿,流程简洁,功能完备,运行高效,充分体现了数据资源标准化、业务系统集约化和计算运行智能化的要求,平台的开发建设将极大地推进宁夏气象现代化进程,对于发展智慧气象具有重要的参考价值。  相似文献   

Remote Sensing of Three-dimensional Winds with Elastic Lidar: Explanation of Maximum Cross-correlation Method     

William T. Buttler  Cecilia Soriano  Jose M. Baldasano  George H. Nickel 《Boundary-Layer Meteorology》2001,101(3):305-327

Maximum cross-correlation provides a method toremotely de-ter-mine high-lyre-solved three-dimensional fields of horizontalwinds with e-las-tic li-darthrough-out large volumes of the planetaryboundary layer (PBL). This paperdetails the technique and shows comparisonsbetween elastic lidar winds, remotelysensed laser Doppler velocimeter (LDV) windprofiles, and radiosonde winds.Radiosonde wind data were acquired at Barcelona,Spain, during the BarcelonaAir-Quality Initiative (1992), and the LDVwind data were acquired at SunlandPark, New Mexico during the 1994 Border AreaAir-Quality Study. Comparisonsshow good agreement between the differentinstruments, and demonstrate the methoduseful for air pollution management at thelocal/regional scale. Elastic lidar windscould thus offer insight into aerosol andpollution transport within the PBL. Lidarwind fields might also be used to nudge orimprove initialization and evaluation ofatmospheric meteorological models.  相似文献   

Circulatory Patterns of Air Pollutants within the Barcelona Air Basin in a Summertime situation: Lidar and Numerical Approaches     

Cecilia Soriano  José M. Baldasano  William T. Buttler  Kurt R. Moore 《Boundary-Layer Meteorology》2001,98(1):33-55

This work examines circulatory patterns of airpollutants in the area of Barcelona (Spain), a regionwith strong coastal and orographic influences. Thiswas achieved through exploitation ofelastic-backscatter lidar data and by numericalsimulation of the atmosphere with a meteorologicalmesoscale model (MEMO). Lidar data were acquired inJuly 1992 during a collaborative campaign between LosAlamos National Laboratory (LANL) and the PolytechnicUniversity of Catalonia (UPC). The lidar providedinformation about the distribution of aerosols and theprevailing winds, determined by application of amaximum cross-correlation algorithm toelastic-backscatter lidar data. Lidar winds are usedto evaluate high altitude winds simulated by themodel. This study showed that circulatory patterns inBarcelona are correlated with daytime convectivevertical mixing, sea-breeze circulations, and verticalforcing caused by mountain thermal and mechanicaleffects.  相似文献   

现代统计气象学的进展     

周家斌  黄嘉佑 《地球科学进展》1991,6(2):11-18

综述了近年来统计气象学的进展。内容涉及统计学方法在业务预报中的应用,天气气候学研究,多元分析,时间序列,正交展开,统计动力预报,非线性动力学等诸多方面。作者认为,今后应继续重视业务预报中统计学方法的应用,努力吸收动力气象学的新成果,把统计气象学提高到一个新的水平。  相似文献