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abnormal drought
相关语句
  异常干旱
     Abnormal Drought Climate Events and the Assessing model of impacts on agriculture
     异常干旱气候事件及其对农业影响评估模式
短句来源
     RESEARCH ON ABNORMAL DROUGHT CLIMATE EVENTSIN NORTH CHINA AND ASSESSMENT MODELOF THEIR IMPACTS ON AGRICULTURE
     华北异常干旱气候事件及其对农业影响评估模式的研究
短句来源
     Taking the middle veaches of Changjiang Rivers the extreme flood year of 1998 and the abnormal drought year of 2000 as an example, this paper makes an analysis the atmospheric circulation character istics of recent summer.
     以长江中游夏季 1 998年特大洪涝和 2 0 0 0年异常干旱为实例 ,对 5 0 0 h Pa月平均高度场、极涡、阻塞高压、西太平洋副热带高压强度、面积指数等因子 ,进行同期大气环流特征对比分析 .
短句来源
  “abnormal drought”译为未确定词的双语例句
     Abnormal drought and flood disasters in the area between the Yangtze River and Huaihe River in the summer in 1991 and 1994 were observed respectively. They are caused by anomalous changes of the main general circulation systems in the Northern Hemisphere,such as the intensity and position of the polar vortex,long wave trough and ridge in the westerlies,the west Pacific subtropical high at 500hPa,and South Asia high at 100hPa,as well as that of SST in the tropical ocean.
     1991年和1994年的夏季,江淮地区分别出现了罕见的洪涝灾害和少雨干旱,究其成因是夏季北半球大气环流的异常即500hPa极涡、西风带系统和西太平洋副热带高压的强弱、配置不同以及100hPa南亚高压的强弱、位置和热带海洋温度的异常所致
短句来源
     By investigating the differences of water-vapor transportation between abnormal drought/flood years and normal years,it is found that the abnormal water-vapor transportation paths and key part in drought/flood years have marked differences among the areas,and that the abnormal water-vapor transportation in drought years is not simply contrary to that of flood years.
     分别分析了各区域旱涝年与降水正常年水汽输送的差异,发现各区域旱涝年的异常水汽输送路径和关键区均存在明显的不同,且旱涝年异常水汽输送并不是简单的反位相。
短句来源
  相似匹配句对
     The EKG were abnormal.
     心电图(EKG)表现异常;
短句来源
     Temporal characteristics of abnormal soil drought in the Loess Plateau of China
     黄土高原土壤干旱异常阶段特征
短句来源
     Abnormal Pregnancy
     异常妊娠
短句来源
     Abnormal Drought Climate Events and the Assessing model of impacts on agriculture
     异常干旱气候事件及其对农业影响评估模式
短句来源
     DROUGHT AND ITS IMPACTS
     干旱及其影响
短句来源
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  abnormal drought
In 1990, abnormal drought conditions resulted in the interruption of freshwater inputs for a period of 7 months.
      
The main reason why the volume of water in the dam does not increase is due to an abnormal drought for the last three years.
      
Modification of vegetative phenology in a tropical semi-deciduous forest by abnormal drought and rain.
      


The relationships between the probable control factors,such as the sea surface temperature(SST)in the equatorial Eastern Pacific and the subtropical high etc.and drought/flood in theChangjiang valley are studied by using the related moment analysis.The contribution of each fac-tor to the formation of drought/flood is also discussed.The results show that the abnormal changeof all factors in the earlier stage his influence,to a different degree,on the variation of precipita-tion in summer.The relationship is shown...

The relationships between the probable control factors,such as the sea surface temperature(SST)in the equatorial Eastern Pacific and the subtropical high etc.and drought/flood in theChangjiang valley are studied by using the related moment analysis.The contribution of each fac-tor to the formation of drought/flood is also discussed.The results show that the abnormal changeof all factors in the earlier stage his influence,to a different degree,on the variation of precipita-tion in summer.The relationship is shown principally by the abnormal drought/flood years.Thecorrelation of the SST,SOI and subtropical high with the drought/flood is persistent to a certaindegree.The synthetical analysis of the factors indicate that SST,SOI,subtropical high and thetemperature in the Changjiang valley area have greater contribution to the formation of drought/flood.

用相关矩分析方法,研究了赤道东太平洋海温等因子与长江流域夏季旱涝之间的关系及各因子在旱涝形成中的贡献。结果表明,所选因子的前期异常变化,对长江流域夏季降水都有不同程度的影响。它们之间的关系主要通过异常旱涝年反映出来,且海温、南方涛动指数和西太平洋副高与旱涝的相关具有一定的持续性。因子综合分析表明,前期赤道东太平洋海温、南方涛动指数、西太平洋副高及长江区温度在长江流域旱涝形成中贡献较大。

Based on the annual variation of the rainfall departure percentage in summer in the lower-middle reaches of the Yangtze River and the Huaihe River valley, 7 cases for the abnormal drought and flooding summers (the drought years: 1981. 1984, 1985; the flooding yearst 1980, 1982, 1983, 1987) are selected. First we analyse the general circulation characteristics of the summer drought and flooding, and then the evolution processes of the general circulation patterns from preceding winters to summers...

Based on the annual variation of the rainfall departure percentage in summer in the lower-middle reaches of the Yangtze River and the Huaihe River valley, 7 cases for the abnormal drought and flooding summers (the drought years: 1981. 1984, 1985; the flooding yearst 1980, 1982, 1983, 1987) are selected. First we analyse the general circulation characteristics of the summer drought and flooding, and then the evolution processes of the general circulation patterns from preceding winters to summers are studied. It is found that during the two kinds of preceding winters for the drought and flooding summer, not only the general circulation patterns in the high-mid latitudes, the local Hadley cells in East Asia but also the activities of the cold surge in the lower latitude are different obviously. Spring, especially April, is the turning period of the general circulation in preceding winter for the drought or nooding summer evolution towards opposite direction. Hereafter, the drought or flooding circulation pattern is established and developed.

TheAnalysisontheFeaturesoftheAtmosphericCirculationinPrecedingWintersfortheSummerDroughtandFloodingintheYangtzeandHuaiheRiver...

n this paper, 10 cases of the abnormal drought or flooding summers during 1951 1991 in the lower-middle reaches of the Yangtze River and the Huaihe River valley are selected respectively.We analyse comparatively their large scale circulations in the mid-high latitudes and in the tropical convective area. The main conclusions are as follows: In preceding winter (December-January-February ) of the drought year.the flow pattern with a strong major trough and a blocking high in the mid-high latitudes...

n this paper, 10 cases of the abnormal drought or flooding summers during 1951 1991 in the lower-middle reaches of the Yangtze River and the Huaihe River valley are selected respectively.We analyse comparatively their large scale circulations in the mid-high latitudes and in the tropical convective area. The main conclusions are as follows: In preceding winter (December-January-February ) of the drought year.the flow pattern with a strong major trough and a blocking high in the mid-high latitudes shows a strong meridional circulation over Eurasia, the cold surge in lower latitudes and the convective activity over the southen part of South China Sea and the Philippines are active and so the cross-equatorial current towards the South Hemisphere is greatly strengthened. On the contrary.in preceding winter of the flagging y6ar.those are much weaker. This work reveals obviously the differences of two kinds of winter monsoon circulations with respeCt to summer drought and flooding and facilitates us to search for the possible link and physical mechanism of interaction between the winter monsoon and the summer monsoon over East Asia.

选取1951—1991年中的长江淮河流域夏季旱涝各10年,对它们前期的中高纬大型环流形势,低纬环流特征,垂直环流强弱,热带海洋状况等进行了对比诊断分析,其结果如下:长江淮河流域夏季旱年前冬(12—1—2月),欧亚中高纬呈经向型环流,东亚大槽较常年强且南伸,乌拉尔山及鄂霍次克海阻塞形势发展,寒潮活动频繁,东亚沿海中低纬冷涌活动强烈,至使该经度带上的跨赤道气流加强,而且使南海至菲律宾地区的对流活动趋于活跃。而涝年前冬则基本上为相反形势。本文的分析清晰地揭示了旱涝年前冬东亚冬季风环流存在着明显的差别,促使我们寻找冬夏季风活动的可能联系及物理机制。

 
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