共查询到20条相似文献，搜索用时 46 毫秒
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2000年以来,随着陕西省业务现代化建设的发展,先进的探测设备与自动化业务软件为提高高空探测业务质量奠定了基础,激发了基层台站高空探测100班、250班无错情创建的积极性,成效较为明显,主要表现为近5 (2003-2008年)创建数量超过了过去40多年的总和,100班无错情总数190个,250班无错情有12个.分析全省4个探空站100班、250班无错情验收中发现的共性问题,提出解决方法. 相似文献
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陈复华 《沙漠与绿洲气象(新疆气象)》1990,(2)
经巴音郭楞州气象局验收,1989年度焉耆县气象站有8人达到地面百班无错情标准;经区局验收有一人达到250个班无错情标准(包括1988年部分基数).其中谭小菊同志已获3个百班和1个250个班无错情奖励;许庆兰同志获2个百班无错情奖励.截止到1989年年底地面组已获得11个百班无错情奖励. 相似文献
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2000年以来,随着陕西省业务现代化建设的发展,先进的探测设备与自动化业务软件为提高高空探测业务质量奠定了基础,激发了基层台站高空探测100班、250班无错情创建的积极性,成效较为明显,主要表现为近5a（2003—2008年）创建数量超过了过去40多年的总和,100班无错情总数190个,250班无错情有12个。分析全省4个探空站100班、250班无错情验收中发现的共性问题,提出解决方法。 相似文献
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王松春 《沙漠与绿洲气象(新疆气象)》1986,(10)
和硕县气象站是国家一般站.现有6人.分预报服务和地面观测两个组.从1977年1月起,测报工作消灭了一切人为的责任性事故,杜绝了涂改伪造记录的恶劣行为,业务质量自1981年起连续5年达到0.2%,今年上半年提高到0.1%,创历史上最好水平.报表审核从1983年9月起,经区局验收,连续37个月保持无错,同时抄录全被评为甲等. 1978年以来,有22人次获百班无错奖,其中两人次达200班无错,一人三次获250班无错奖励,荣获国家气象局授予的“质量优 相似文献
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20 0 1年 ,焦作市局观测站创连续百班无错情 8个 ,连续 2 50班无错情 2个。在创百班和 2 50班过程中 ,我们积累了一些感性认识。1 工作要认真细致 ,记录要规范严谨创百班、2 50班 ,细心认真是必需的。值班员至少要对自己的记录校对 3遍以上 ,每一位观测员都是预审员 ,每次值班都应认真校对前几班所有的记录 ,做到日清、旬清、月结。记录要做得规范整洁 ,给人一种明朗的感觉。2 多创百班 ,为创 2 50班打基础近几年 ,焦作局百班逐年上升。只有百班报得多 ,验得多 ,过得多 ,整体质量才能不断提升 ,才能为争创 2 50班打基础。3 理论功底要扎… 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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一九六O年,我在桂林气象短训班结业后,被分配到桂林气象台搞地面观测,除1970年～1976年到工厂工作外,有十四年从事气象观测工作。十多年来,在党的培养和同志们的帮助下,我在地面测报工作中,取得了一点成绩,从1977年3月6日到1978年7月17日,第一次达到了连续260个班无错情,1978年7月18日至1979年12月5日又达到了连续240个班无错情,获得了中央气象局授予的“优秀测报员”称号。我是怎样当好地面测报班的,现谈谈几点体会: 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
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准两年振荡对大气中微量气体分布的影响 总被引：6，自引：5，他引：6
NCAR的包含化学、辐射、动力相互作用的两维模式（SOCRATES）移植回国后进行了初步的模拟试验,用以研究某些对环境问题重要的微量气体的化学、辐射、动力传输过程。在不考虑极地平流层云和气溶胶表面非均相化学等情况下,模式积分多年,计算结果稳定,模拟的风场、温度场显示出正常的季节变化,模拟的微量气体分布与卫星实测资料对照,结果也比较一致。为了探讨热带平流层风场的准两年周期振荡（QBO）对平流层微量气体分布的影响,我们做了QBO强迫的数值试验,即在模式中加入QBO强迫,并与不考虑QBO强迫的模拟结果对比。结果表明,QBO与其相关的次级环流所引起动力输送的变化,使平流层微量气体分布发生变化。 相似文献