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介绍了四川省省级人工影响天气指挥中心（简称：四川省省级人影指挥中心）局域网的软、硬件等方面的设计思路、设计原则及功能特点，介绍了指挥中心各分系统工作站的内容和主要功能等。 相似文献
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四川省人工影响天气指挥中心业务系统局域网采用星形树结构,分布式P2P模式组网.业务系统现有作业预警、天气分析、雷达信息、闪电监测、空地信息传输、地面作业点查询、国家级人影指导产品分析、静止卫星云图等8个工作站.在2台服务器上建立了文件服务、映射虚盘、FTP站点和web网站.通过DLP大屏投影、会议发言、会商摄像3个子系统组成的视频会商系统,将业务系统各工作站图像信号、DVD播放内容、摄像机拍摄内容输出到投影墙上并自由切换,同时可以和各市州进行视频会商.此外,人影指挥中心通过空地传输系统实现了与外场作业飞机、机场地勤的数据语音通讯.本文简介了四川省人影指挥中心业务系统局域网各部分的设计、结构和功能. 相似文献
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四川省人工影响天气指挥中心业务系统局域网采用星形树结构,分布式P2P模式组网。业务系统现有作业预警、天气分析、雷达信息、闪电监测、空地信息传输、地面作业点查询、国家级人影指导产品分析、静止卫星云图等8个工作站。在2台服务器上建立了文件服务、映射虚盘、FTP站点和web网站。通过DLP大屏投影、会议发言、会商摄像3个子系统组成的视频会商系统,将业务系统各工作站图像信号、DVD播放内容、摄像机拍摄内容输出到投影墙上并自由切换,同时可以和各市州进行视频会商。此外,人影指挥中心通过空地传输系统实现了与外场作业飞机、机场地勤的数据语音通讯。本文简介了四川省人影指挥中心业务系统局域网各部分的设计、结构和功能。 相似文献
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本文主要介绍了四川省自动站中心站系统在进行了升级改造后的结构、功能、软件处理流程、系统特点等。 相似文献
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根据四川省人工影响天气发展现状和需要,提出了建设以气象业务系统为依托的人影现代化决策指挥中心为近期目标,逐步建设和完善全省通信、作业保障、监测等系统以及人工影响天气作业、试验示范基地建设的总体框架和建设步骤,对全省人影现代化建设具有实际指导意义. 相似文献
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我局从1999～2003年,测报工作连续4年未出现错情,在此期间共有1个250个班,9个百班无错通过上级业务部门验收.在仪器保管、使用、维护上符合要求,对外报送的各种表、簿都能做好出门合格. 相似文献
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Summary Considering the effects of causal mechanics on geophysical problems enables us to explain a number of phenomena, which cannot
be explained from conventional positions. This paper shows that the introduction of the force of causality in a simple barotropic
hydrodynamic model of weather forecasts results in the outcomes, which, on the one hand, can not be described from the positions
of classical hydro-thermodynamics, whilst on the other hand, exist in nature. 相似文献
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A. A. Lavrova E. S. Glebova I. V. Trosnikov V. D. Kaznacheeva 《Russian Meteorology and Hydrology》2010,35(6):363-370
Due to the complex orography and the presence of the moisture-saturated air, the Mediterranean region is characterized by
the increased baroclinic and convective instability, that leads to the sudden cyclogenesis and the formation of dangerous
weather phenomena. The results are given of the investigation of formation mechanisms of Mediterranean cyclones, peculiarities
of stages of their evolution and dynamical processes, which occur throughout the atmosphere, using the regional numerical
ETA model of the atmosphere by the example of individual cases of the cyclogenesis over the Mediterranean Sea. It is revealed
that the cold Arctic air outbreak (the intrusion of the cold Arctic air) to the south of the Western Europe, leading to the
formation of the areas of the baroclinic instability and the increased moisture content of the air in the area of the vortex
origin, favors the cyclogenesis. The use of the vertical coordinate η in the model enabled to compute more precisely the vertical
wind speed, therefore, the influence of the orography on the moisture content and precipitation increase became pronounced.
The transformation of the structure of meteorological fields in the course of the development of vortexes is considered. The
computation of the helicity is made, and it is shown that this characteristic can be one of the earliest predictors of cyclogenesis. 相似文献
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Chunguang CUI Wen ZHOU Hao YANG Xiaokang WANG Yi DENG Xiaofang WANG Guirong XU Jingyu WANG 《大气科学进展》2023,40(4):711-724
Here, we analyze the characteristics and the formation mechanisms of low-level jets(LLJs) in the middle reaches of the Yangtze River during the 2010 mei-yu season using Wuhan station radiosonde data and the fifth generation of the European Centre for Medium-Range Weather Forecasts(ERA5) reanalysis dataset. Our results show that the vertical structure of LLJs is characterized by a predominance of boundary layer jets(BLJs) concentrated at heights of 900–1200 m.The BLJs occur most frequently at 230... 相似文献
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流场配置及地形对西南低涡形成的动力作用 总被引：10，自引：8，他引：10
本文采用定常二层模式讨论较小地形及高、低层流场配置对西南低涡形成的动力作用。指出了西南低涡的形成是与盆地、河谷以及其上气流分层有关的一种定常态.在上、下为西风分层时期,低层的浅薄暖湿西风有利于西南低涡的形成.在上、下为东、西风分层时期,上层浅薄东风亦有利于西南低涡的形成.小型的凸起山脉对西南低涡的形成没有作用. 相似文献
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On the determination of the height of the Ekman boundary layer 总被引：1，自引：1，他引：1
S. S. Zilitinkevich 《Boundary-Layer Meteorology》1972,3(2):141-145
The heighth
of the Ekman turbulent boundary layer determined by the momentum flux profile is estimated with the aid of considerations of similarity and an analysis of the dynamic equations. Asymptotic formulae have been obtained showing that, with increasing instability,h
increases as ¦¦1/2 (where is the non-dimensional stratification parameter); with increasing stability, on the other hand,h decreases as –1/2. For comparison, a simple estimate of the boundary-layer heighth
u
determined by the velocity profile is given. As is shown, in unstable stratification,h
u
behaves asymptotically as ¦¦–1, i.e., in a manner entirely different from that ofh
. 相似文献
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1引言我国执行接地降阻剂测试的技术标准是全国电力系统起草的:“接地降阻剂暂行技术条件修改稿”。在技术要求中要求接地降阻剂的酸碱值应在7￣12范围内。在实际使用中发现该技术要求对接地降阻剂的酸碱值要求范围并不合理,需要分析和讨论。2接地降阻剂的PH值接地降阻剂的酸碱性对地网的使用寿命至关重要,为了不让接地降阻剂腐蚀接地体或者减弱接地降阻剂对接地体的腐蚀,在接地降阻剂测试的技术要求中,对接地降阻剂的酸碱度有一定的限制。国内各厂家用于生产接地降阻剂的偏弱酸的盐类进行了对镀锌钢材腐蚀的试验,结果是这些镀锌钢材均受到… 相似文献
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文章选用阴山山脉山北乌拉特后旗、白云、达茂旗、苏尼特左旗、化德,山南杭后旗、包头、呼和浩特、察右前旗、兴和1971—2000年气温、降水量、天气现象等资料进行对比分析,得到阴山山脉对内蒙古自治区中部地区气象要素影响初步结论。 相似文献
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Summary ?Some features of the climate system that can be considered predictors of the onset and end of the convective season over
the Amazon were identified using one-month lag correlations and field composites. The fields analyzed were sea surface temperature
(SST), outgoing long-wave radiation (OLR), vertical velocity and upper tropospheric winds.
Warm (cold) anomalies in the SST in the tropical North Atlantic and the Caribbean Sea tend to be associated with delayed (early)
onsets. Likewise, there is a tendency towards a delayed (early) end of the convective season with cold (warm) anomalies in
these ocean regions. In addition, the SST in the cold tongue region of the equatorial Pacific is negatively, though weakly
correlated with the onset date. The signal of this SST is more evident in the case of the end date, which is earlier with
respect to its mean date in most of El Ni?o cases.
The convective activity intensity itself conditions the onset and the end of the convective season, as it is evidenced by
the behavior of the OLR and the vertical velocity fields. The more (less) intense the convective activity over South America
during the preceding month, the earlier the onset and the later the end of the convective season on the Amazon region.
The prediction of the onset and end dates of the convective season in the Amazon region was explored using a simple multiple
regression technique based on the variables that have shown precursor signals with respect to these dates. The correlation
coefficient between the predicted and the observed onset date is 0.81, and in the case of the end date, it is 0.76. The skill
to predict early, delayed and normal categories was high, since in more than two thirds of the cases the category was successfully
predicted, and there were no predictions of categories opposed to those observed.
Received July 23, 2001; revised February 22, 2002; accepted April 26, 2002 相似文献