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1.
《气象》1979,(1)
1978年1一10月太阳黑子相对数平均值 了翻1一刻一2一训一犷一分几:月陈’月!。一月’{‘于自8”月卜月110月 里鲤一吐生土里之」进乙上上兰」逻烈二生址尘立匕竺生上王望卫玉望 ·1978年10月太阳黑子相对数紫金山天文台大阳室石一初,.,il妇g价’抖g{言{不{’J队。}二劲司’期,4)’;,;’l’l6},不8几不石Gl’}期飞3菌25{动;汀动2。}3。一瓜不不犷太阳黑子},。。},。。1,。。},。。1。}。nl八。l。。}。。},。。1,月。】,。。},。。},。,!,‘J{、尸。},、。{,。八】,,n}、。,},。。1,。八{,。。}。,}。n},。八},。八【,,。!八。},,,},。。},… 相似文献
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《气象》1983,(9)
1983年7月500毫巴环流指数,环流特征量资料中央气象合环流指数西太平洋融热带高压东亚,{极涡月平均候平均四积指数强度指数西伸脊点脊线位置比匕界位置平均位置平均强度中』。位置{强度经度}纬度123456亚欧地区1zIMO。700。330。540。36仓一340。420。980。340一840。280 .500 .340。98O。243272105233155w70NIz工。O。630。300。400。330。390。300。960。410。4连0。370。580。230。990。16198子年7月亚洲地区逐日5的毫巴西风环流指数中央气象合仲朴123456789101112131唾1516171819202l2223242526272829306854了3103126125了328401 qj1… 相似文献
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《气象》1981,7(11):48-48
1981年8月500毫巴环流指数、环流特征量资料黑环流指数西太平洋副热带高压}东亚,{极涡月平均候平均面积指数强度指,故匹科梢卢盯日卜凡脊线位置习七界位置平均位置平均强度中心位置强度经变纬度123456亚欧地区IzIH0。590。490。790。530 .360。500。580。29O。700。300。590。5心O。5心0。7518211 15OE263O100OW80”N0。400。420。650。680。100。540。380。220。370。160。430。峨50。460。481981年8月亚洲地区逐日500毫巴西风环流指数中央气象台洲洲本冷8 .91 101 1112}13{14}11 16卜丁卜8{19)2。卜1{22卜241 25262721一2}101 341 21… 相似文献
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《湖北气象》1994,(1)
— ——— Y————～wN @ 。-jllA％illiiiiillllill:ll 省气象局装备保障部台唱-_团结就是力量 \ 蒿_W_t gry 叫 ～ 一、,oh yHyH-厂’4g-”一,③OD \。人丁 部劝g。 脓a掷“厂卧 -。:ltyMalliM44fity MM.”:j”rd-。aht}[i--gytr:uANMmpWEW -fo4mpffe IWekop.-。、。— 一” ,。。cy\jh％iigprWMnglekde\。。)kT ?fMWMHfyAs,wn_。i\k,__、、__。;_。ft_;d 鹦圈韶凹刷回回-——。藏族儿女纵情歌唱,把敬爱的毛主席颂扬。 艾主亥日I服玄歌 局机笑的藏族舞蹈-毛王席的光辉、煞是迷人欢度春节… 相似文献
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《气象科技》1976,(8):22-22
副热带高压界置北位月面积指数强度指数西伸脊点脊线位置}生遭垄~}平均{平均}位置}强度!;日口无无无无无无┌───────┬───────┐│亚欧地区 │亚洲地区 ││环流指数 │环流指数 │├───┬───┼───┬───┼─┬─┬──┐│Iz │I卜, │Iz │IM │W │C │E │├───┼───┼───┼───┼─┼─┼──┤│0。70 │0。46 │仑。64│0。32 │ │14│10 ││0。71 │0。47 │0。84 │0。47 │ │22│ 6 ││1。09 │0。56 │1。09 │0。42 │ │10│16 ││1。33 │0。68 │1。56 │0。51 │ │3 │23 │… 相似文献
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《气象》1980,(8)
1980年5月500毫巴环流指数、环流特征量资料 一.中央气象合 }”环流,’,{西太平洋副热带高压东亚。}极,业送尺1 JZll。0910.7611。3510。7011。4011。3111。011 1 1 1 1 1 1 1 11地区1 IM10。5010。4210。4210。5310。4110。7310。491 1 1 1 1 1 11!l—l—l—}—l—l—}—}—}—1 251 3911001 161 23】134】237195“E175“N】30亚洲1 1211。39}1。18】1。5610。9211。9411。58!1。131 11!1 1 11!l铿竺.‘“尸:‘6:10·‘5}。户”}。·卢}“·37}。·60.!。。‘8}}:}:!:一!},L.}一};! 1980年5月亚洲地区逐日500毫巴西风环流指数 中央气象… 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
14.
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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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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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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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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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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The impact of high resolution modern vegetation cover on the West African climate is examined using the International Centre for Theoretical Physics Regional Climate Model implementing the NCAR Community Land Model. Two high resolution 25 km long-term simulations driven by the output from a coarser 50-km resolution simulation are performed for the period 1998–2010. One high resolution simulation uses an earlier and coarser-resolution version of plant functional type distribution and leaf area index, while the other uses a more recent, higher-quality, and finer-resolution version of the data. The results indicate that the new land cover distribution substantially alters the distribution of temperature with warming in Central Nigeria, northern Gulf of Guinea and part of the Sahel due to the replacement of C4 grass with corn; and cooling along the coastlines of the Gulf of Guinea and in Central Africa due to the replacement of C4 grass with tropical broadleaf evergreen trees. Changes in latent heat flux appear to be largely responsible for these temperature changes with a net decrease (increase) in regions of warming (cooling). The improved land cover distribution also results in a wetter monsoon season. The presence of corn tends to favor larger precipitation amounts via more intense events, while the presence of tropical broadleaf evergreen trees tends to favor the occurrence of both more intense and more frequent events. The wetter conditions appear to be sustained via (1) an enhanced soil moisture feedback; and (2) elevated moisture transport due to increased low-level convergence in regions south of 10N where the most substantial land cover differences are present. Overall the changes induced by the improved vegetation cover improve, to some extent, the performance of the high resolution regional climate model in simulating the main West African summer monsoon features. 相似文献