分布式气象内容管理系统设计     

何险峰  马力  罗永康 《气象科技》2013,41(6):1036-1042

提出了一套分布式气象内容管理系统的设计思路及其技术方法。以中国气象组织体系（包括中央及各省市的气象信息网络和服务器设备）为建设基础,采用LDM通信传输、存储/内容管理、图形化服务产品生成、本体化气象服务、行政区变尺度客观分析等构成组件,构建了覆盖中央及各省市气象业务和服务的分布式气象内容管理系统。实践运行表明,这种采用了统一定义、接口及信息表达方式的内容管理系统可有效提高气象数据的访问、分享及处理效率,加快了各种气象服务产品的开发速度,拓宽了气象信息的服务范围。  相似文献   

近实时公共气象服务分析图网站发布   总被引：1，自引：1，他引：0  

何险峰  马力  罗永康  薛勤  徐箐  张祥峰 《气象科技》2012,40(4):578-584

给出一种基于开源IDV工具构建气象产品网站发布平台的设计思路和实现方法。近实时公共气象服务分析图将使用人员定位于浏览器端县乡级气象、农技、公众群体,突出分析图的时空分级覆盖、耕作层气象服务、山地气象服务和灾害气象服务。通过内容、时间、区域以及表现形式4个方面的分解,描述了网站的设计原理。通过本体技术实现气象要素向气象知识的过渡。通过图形产品的静态和动态层分别处理,提高了二维和三维图形产品的生成速度。构建形成的气象产品发布平台已经在多个网站得到应用并得到好评。  相似文献   

我国城市地下空间规划现状、问题与对策     

彭芳乐  乔永康  程光华  朱合华 《地学前缘》2019,26(3):57-68

地下空间规划是城市地下空间开发利用有序开展的重要保障。随着我国轨道交通建设的全面展开以及相关政策的陆续出台,我国城市地下空间开发利用必将迎来更大的发展。城市地下空间规划也在近年越来越得到重视。从目前各城市的地下空间规划实践来看,我国城市地下空间规划的技术体系已基本成型,但其中仍然存在着各种各样的问题。在摸清我国城市地下空间规划编制现状和实施效果的基础上,掌握我国城市地下空间规划所面临的问题,并结合未来地下空间发展趋势提出我国城市地下空间规划解决问题的对策,有助于城市地下空间规划理论和方法进一步完善,更好地保障我国城市地下空间事业的可持续发展。  相似文献   

基于海上风电场构建海洋水文同步实时现场观测系统的思考     

蔡树群  牛建伟  何映晖  陈学彬  张永康  许洁馨  陈植武  林世柽  谢皆烁 《热带海洋学报》2021,40(3):96-102

海上风电是一种清洁的可再生能源。本文简述了海上风电发展概况, 并介绍了广东省在南海北部建设海上风电场的进展, 同时描述了南海北部一些典型的海洋水动力过程及其现场观测研究存在的难题; 最后提出利用海上风电场构建海洋水文现场同步实时网络系统的观点, 指出利用这些长期定点的网络式观测数据对研究海洋中小尺度动力过程等的优势。希望能为促进海上风电与海洋科学研究的融合发展提供参考。  相似文献   

利用CEEMD分析中国沿海GNSS站高程时序变化     

刘豪  周东旭  王盼龙  张化疑  王永康  姜传苓 《测绘通报》2020,(3):39-43,77

利用完备经验模态分解方法（CEEMD）对我国沿海地区6个GNSS基准站（2010—2018）的高程时序数据进行了处理分析。结果表明：CEEMD在高程时间序列分析中具有一定的优越性，可准确分解出各GNSS站高程时序中存在的周、月、季节、年等变化周期项，其中周年运动是主要贡献项，各站高程时间序列的短周期变化与潮汐变化周期具有密切关联性；沿海GNSS站的地面沉降既具有区域的一致性，又存在区域间差异性，其中D区DBJO、DZJJ站呈现先下降后上升的趋势，N区NZUH、NWZU站呈下降趋势，B区的BZMW呈上升趋势，而同海区的BLHT站则呈显著的下降趋势。  相似文献   

Validating the dynamic downscaling ability of WRF for East Asian summer climate     

Jiangbo?GaoEmail author  Wenjuan?Hou  Yongkang?Xue  Shaohong?Wu 《Theoretical and Applied Climatology》2017,127(1-2):241-257

This work aims, as a first step, to analyze rainfall variability in Northern Algeria, in particular extreme events, during the period from 1940 to 2010. Analysis of annual rainfall shows that stations in the northwest record a significant decrease in rainfall since the 1970s. Frequencies of rainy days for each percentile (5th, 10th, 25th, 50th, 75th, 90th, 95th, and 99th) and each rainfall interval class (1–5, 5–10, 10–20, 20–50, and ≥50 mm) do not show a significant change in the evolution of daily rainfall. The Tenes station is the only one to show a significant decrease in the frequency of rainy days up to the 75th percentile and for the 10–20-mm interval class. There is no significant change in the temporal evolution of extreme events in the 90th, 95th, and 99th percentiles. The relationships between rainfall variability and general atmospheric circulation indices for interannual and extreme event variability are moderately influenced by the El Niño-Southern Oscillation and Mediterranean Oscillation. Significant correlations are observed between the Southern Oscillation Index and annual rainfall in the northwestern part of the study area, which is likely linked with the decrease in rainfall in this region. Seasonal rainfall in Northern Algeria is affected by the Mediterranean Oscillation and North Atlantic Oscillation in the west. The ENSEMBLES regional climate models (RCMs) are assessed using the bias method to test their ability to reproduce rainfall variability at different time scales. The Centre National de Recherches Météorologiques (CNRM), Czech Hydrometeorological Institute (CHMI), Eidgenössische Technische Hochschule Zürich (ETHZ), and Forschungszentrum Geesthacht (GKSS) models yield the least biased results.  相似文献   

Seismotectonic Environment for Zhangbei-Shangyi Earthquake and Characteristics of Macroscopic Damage     

Xu Xiwei  Rang Yongkang  Zhou Bengang  Yin Gongming  Li Jianhua  and Liu WuzhouInstitute of Geology  CSB  Beijing  China 《中国地震研究》1999,(3)

The regional seismotectonic environment for the Zhangbei- Shangyi earthquake is described, and in combination with the distribution of macroscopic seismic intensity, source mechanism solution, and interpretation of lineaments on satellite images, the seismogenic structure for the earthquake and possible seismogenic fault are discussed in this paper. It is suggested that the Zhangbei-Shangyi earthquake is a result of the latest movement along the northwestern termination of the Zhangjiakou-Penglai fault zone and we should pay serious attention to the future trend of seismic activity along this fault zone.  相似文献   

数字地震仪(或雷达)的文件格式及其转换方法   总被引：3，自引：0，他引：3  

胡家富  段永康 《地震地磁观测与研究》1999,20(3):36-41

详细介绍了ＳＥＧ新规定的ＳＥＧ－２标准及其文件结构,这一标准不但适用于数字地震仪,而且也适用于地质雷达等数字化记录设备。同时给出了一个在ＩＢＭ－ＰＣ环境不读取ＳＥＧ－２数据文件的Ｃ语言示范程序,根据这个示范程序,用户可以很方便地将ＳＥＧ－２数据文件转换成适用于特定应用软件的数据格式。  相似文献   

"农经网"已成为乐山农村信息化服务体系建设的重要内容     

罗永康 《高原山地气象研究》2005,25(1)

四川农村综合经济信息网(以下简称"农经网")是四川省委、省政府为建设农村市场、科技、信息三大服务体系,推进农业产业化而采取的一项重要举措.也是四川省气象局发挥自身人才技术优势,积极拓展为农服务领域,促农增收的具体行动.自2001年建成以来,已在全省各地的农业、农村工作中发挥了重要的信息服务与科技支撑作用,为各级政府和农民提供市场信息80多万条,访问量超过200万人次.在乐山,已成为农村信息化服务体系建设的重要内容.  相似文献   

Numerical simulation of the impact of vegetation index on the interannual variation of summer precipitation in the Yellow River Basin   总被引：1，自引：0，他引：1  

LI Weiping  XUE Yongkang 《大气科学进展》2005,22(6):865-876

Two sets of numerical experiments using the coupled National Center for Environmental Prediction General Circulation Model （NCEP/GCM T42L18） and the Simplified Simple Biosphere land surface scheme （SSiB） were carried out to investigate the climate impacts of fractional vegetation cover （FVC） and leaf area index （LAI） on East Asia summer precipitation, especially in the Yellow River Basin （YRB）. One set employed prescribed FVC and LAI which have no interannual variations based on the climatology of vegetation distribution; the other with FVC and LAI derived from satellite observations of the International Satellite Land Surface Climate Project （ISLSCP） for 1987 and 1988. The simulations of the two experiments were compared to study the influence of FVC, LAI on summer precipitation interannual variation in the YRB. Compared with observations and the NCEP reanalysis data, the experiment that included both the effects of satellite-derived vegetation indexes and sea surface temperature （SST） produced better seasonal and interannual precipitation variations than the experiment with SST but no interannual variations in FVC and LAI, indicating that better representations of the vegetation index and its interannual variation may be important for climate prediction. The difference between 1987 and 1988 indicated that with the increase of FVC and LAI, especially around the YRB, surface albedo decreased, net surface radiation increased, and consequently local evaporation and precipitation intensified. Further more, surface sensible heat flux, surface temperature and its diurnal variation decreased around the YRB in response to more vegetation. The decrease of surface-emitting longwave radiation due to the cooler surface outweighed the decrease of surface solar radiation income with more cloud coverage, thus maintaining the positive anomaly of net surface radiation. Further study indicated that moisture flux variations associated with changes in the general circulation also contributed to the precipitation interannual variation.  相似文献