赤道西风

印度洋赤道西风的变动及其与低纬环流的关系

Variation of equatorial westerlies and its relations with circulation in low latitude in Indian Ocean

夏季南海区域赤道西风与热带扰动的相互作用

The interaction between equatorial westerlies and tropical disturbance over the region of South China Sea in summer

当少台风活动时期，东亚为纬向环流，西南太平洋上赤道西风及ITCZ也弱。

During the inactive period , the circulation of East Asia is essentially zonal and the ITCZ over Southwest Pacific is weak .

上游赤道西风在南海夏季风暴发中的重要作用

The role of upstream equatorial westerly wind in the summer monsoon onset over the South China Sea

分析表明，赤道西风是印度洋低纬地区的一支重要的基本气流。

It shows that these equatorial westerlies are an important basic current in the low latitudes in Indian Ocean .

对流层上层热带东风带上的高层辐散，对低层近赤道西风向北伸展起触发作用；

The divergent flow field in the tropical easterly of the upper troposphere stimulates the northeastward stretch of the SEW .

而冬季赤道西风分量所产生的影响，则在西太平洋上形成显著的偏差气旋环流，使东亚副热带夏季风减弱，南海夏季风加强。

The tropical westerly component over the winter monsoon anomaly makes the anomalous cyclone over the western Pacific form and the East Asian summer monsoon become weaker and the South China Sea summer monsoon stronger .

结果表明：大多数热带气旋的发生、发展都与赤道西风急流向东扩展或热带气旋东侧南风急流向北扩展有关；

The analysis and comparison for 24 cases indicate that the generation and development of most of typhoons are related to western jet stream in equator extending eastward and southern jet stream in east side extending northward .

本文参照水平运动方程和涡度方程，推导得赤道西风变化率方程，说明局地赤道西风变化主要取决于总能量和涡动的输送。

Referring to the equations of horizontal motion and vorticity , the variability of E / W is derived , and they indicate a major dependence of the local change in E / W upon the transportation of general amount of energy and vorticity .

采用欧洲中心格点资料分析发现，最初影响东亚的热带季风是源于75°～90°E地区的近赤道强西风。

An analysis of ECMWF data shows that the tropical summer SW monsoon , which firstly reaches East Asia in Mid-May , comes from the strong equatorial westerlies ( SEW ) near 75 °~ 90 ° E.

而在负BWA年，赤道地区西风背景减弱，以上物理过程受削弱使赤道东传BSISO偏弱。

During the negative BWA summer , equatorial westerlies are weaker than the climatological mean since the above physical process is weakened with the equatorial eastward propagating BSISO weaker .

利用最近20a的大气海洋资料，分析了厄尔尼诺事件与赤道太平洋西风异常以及赤道太平洋次表层海温之间的关系。

Atmosphere and ocean data in tropical Pacific Ocean from 1980 to 2002 and a numerical model are used to analyze the relationship among the evolution of E1 Nino , westerly anomaly in equatorial Pacific Ocean and subsurface temperature anomaly in equatorial Pacific Ocean .

结果表明，平流层QBO的演变特征是：东风向西风转换最早出现在印度洋赤道地区；西风向东风转换最早出现在美洲和西太平洋赤道地区。

Results show that the transition from the easterly to the westerly originates in the equatorial Indian Ocean , and from the westerly to the easterly in tropical America and the equatorial western Pacific .

沃克环流上升区赤道低空强西风带的分析赴东南亚某国抗强热带风暴医疗救援准备

AN ANALYSIS ON THE CHARACTERISTICS OF THE STRONG WESTERLY WIND BELT AT THE LOWER LEVEL AT THE UPLIFTED AREA OF WALKER CIRCULATION Preparation Work of Medical Relief against Cyclone in Southeast Asia

在这种流场异常的驱动下赤道西太平洋西风加强，海面升高，海表温度上升，赤道中东印度洋和东太平洋东风加强，海面降低，海表温度下降。

It causes westerly wind anomaly , rise of sea level and increase of ( SST ) along the western equatorial Pacific and easterly wind anomaly and decrease in both sea level and SST along the equatorial eastern Indian and Pacific oceans .

另外，夏季赤道印度洋西风与越南夏秋季降水的相关与索马里气流类似，表明索马里越赤道气流可能是通过改变纬向水汽输送来影响越南南方降水。

Research also indicates that the correlation between the west wind over the equatorial Indian Ocean in summer and southern Vietnam precipitation is similar to Somali flow , therefore it can be inferred that through modifying meridional water-vapor transfer , Somali flow affects precipitation in southern Vietnam .

利用一个简单热带海-气耦合模式较好地模拟出了观测到的厄尔尼诺年赤道西太平洋地区西风异常的变化特征。

These characteristics of seasonal variation are successfully simulated with a simple equatorial ocean-atmosphere coupled model .

分析还表明，暖池次表层海温正距平的东移原因在于赤道西太平洋地区西风异常的发生和向东扩展。

It is also clear that the reason to cause the eastward propagation of anomalous SOT in the warm pool region is the westerly wind anomalies over the equatorial western Pacific and their eastward expansion .

而且，若南海夏季风爆发偏早（晚），赤道印度洋地区西风的加强和索马里跨赤道南风气流的建立也偏早（晚）。

If the outbreak of the South China Sea summer monsoon is earlier ( later ), the enhancement of westerly wind over the equatorial Indian Ocean and the onset of cross-equator southerly wind in the Somalia region are all earlier ( later ) .

最后，模式模拟了1980～1984年赤道太平洋海温的变化，进一步证实了赤道纬向西风异常对暖水东移起着重要的作用。

Finally , the response of subsurface temperature anomaly in the equatorial Pacific Ocean to the westerly anomaly in 1982 / 1983 E1 Nino event is well simulated by a Pacific Ocean model .

在厄尔尼诺发生前，赤道西太平洋次表层海水出现持续性增暖，赤道西太平洋西风异常频率加快，强度增强。

Before E1 Nino events onset , the subsurface water in western equatorial Pacific Ocean continues to be warmer , and strength of westerly anomaly are enhanced and its frequency increases .