| 乌鲁木齐机场东南大风过程温压湿及水平风切变特征 |
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| 引用本文： | 张利平,王春红.乌鲁木齐机场东南大风过程温压湿及水平风切变特征[J].气象科技,2007,35(5):719-722. |
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| 作者姓名： | 张利平 王春红 |
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| 作者单位： | 民航新疆空中交通管理局气象中心,乌鲁木齐,830016 |
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| 摘 要： | 针对乌鲁木齐机场2002~2005年出现的典型东南大风天气过程,利用常规天气资料和机场跑道自动观测系统采集的实时观测资料,分析了东南大风天气机场跑道附近气象要素及水平风切变的演变特征。结果表明,①东南大风天气时气象要素场特征变化明显,起始和维持阶段具有升温、降压和降湿的特征,结束前具有降温、升压和升湿的特征,气温、场压和湿度变化转折的时间基本一致,这一时间也正是东南大风开始减弱的时间;②同一时刻机场跑道两端会出现风向和风速的不连续,在跑道上形成较强的水平风切变,尤其在起始和结束阶段跑道风切变强度表现得更明显。跑道两端风速差大小及其变化是影响风切变强弱和变化的决定因素。
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| 关 键 词： | 东南大风 AWOS实时观测资料 气象要素 水平风切变 |
| 收稿时间： | 2006/8/22 0:00:00 |
| 修稿时间： | 2006-08-22 |
Characteristic Analysis of Temperature,Pressure,Humidity and Horizontal Wind Shear under Southeast Strong Wind at Urumqi International Airport |
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| Zhang Liping and Wang Chunhong.Characteristic Analysis of Temperature,Pressure,Humidity and Horizontal Wind Shear under Southeast Strong Wind at Urumqi International Airport[J].Meteorological Science and Technology,2007,35(5):719-722. |
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| Authors: | Zhang Liping and Wang Chunhong |
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| Institution: | Urumqi Meteorological Center of CAAC, Urumqi 830016 |
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| Abstract: | The evolutionary characteristics of the meteorological elements and horizontal wind shear under southeast strong wind around the runway are analyzed on the basis of the conventional meteorological data and the real-time AWOS data from airport runways during typical southeast strong wind processes at the Urumqi international airport from 2002 to 2005.The results show:(1) the meteorological elements under southeast strong wind changed significantly.The temperature rose,and the pressure and the humidity descended at the beginning and during the maintain stage,while the temperature decreased,and the pressure and humidity increased in the end.The temperature,pressure,and humidity changed abruptly at the same time when the wind weakened.(2) The strong horizontal wind shear above the runway appeared because of the discontinuousness in wind direction and velocity in different places along the runway at the same time,especially at the beginning and in the end.The difference in wind velocity between two ends of the runway and its variation are dominant factors affecting the strength and variation of the wind shear. |
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| Keywords: | southeast strong wind AWOS data meteorological element horizontal wind shear |
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