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| 高空急流带对甘肃沙尘暴强度的影响 | |
| 引用本文： | 杨先荣,王劲松,张锦泉,韦伯龙,刘洪,邓吉录,贾小琴.高空急流带对甘肃沙尘暴强度的影响[J].中国沙漠,2011,30(4):1046-1051. |
| 作者姓名： | 杨先荣 王劲松 张锦泉 韦伯龙 刘洪 邓吉录 贾小琴 |
| 作者单位： | 1. 中国气象局兰州干旱气象研究所中国气象局干旱气候变化与减灾重点开放实验室;甘肃省干旱气候变化与减灾重点实验室,甘肃兰州730020;中国气象局气候研究开放实验室,北京100081;临夏州气象局,甘肃临夏731100 2. 中国气象局兰州干旱气象研究所中国气象局干旱气候变化与减灾重点开放实验室;甘肃省干旱气候变化与减灾重点实验室,甘肃兰州730020;中国气象局气候研究开放实验室,北京100081 3. 中国气象局气候研究开放实验室,北京100081;临夏州气象局,甘肃临夏731100 4. 临夏州气象局,甘肃临夏,731100 |
| 基金项目： | 中国气象局气候研究开放实验室开放课题(LCS22006210)资助 |
| 摘 要： | 利用1970—2010年3—5月甘肃41 a的气象资料、Micaps常规资料,按照强沙尘暴天气过程标准,分析研究了48例强沙尘暴过程与高空偏北急流带振荡的关系。结果表明,高空急流带(核)的引导作用,与甘肃强沙尘暴发生、发展、强度以及波及范围有直接的关系,尤其是偏北急流带发展到巴尔喀什湖附近转为“C”型或“L”型流场时,其中短波分裂强冷空气和扰动性急流向甘肃发展,造成春季突发性很强的沙尘暴,甚至出现“黑风”。这种天气过程移速快,影响范围广,生命史短,破坏力极大。 |
| 关 键 词： | 强沙尘暴 振荡 高空急流带 波及范围 |
| 收稿时间： | 2011-3-7 |
| 修稿时间： | 2010-4-14 |
Influence of High-Level Jet Stream to Strong Sandstorms in Gansu,China |
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| YANG Xian-rong,WANG Jin-song,ZHANG Jin-quan,WEI Bo-long,LIU Hong,DENG Ji-lu,JIA Xiao-qin.Influence of High-Level Jet Stream to Strong Sandstorms in Gansu,China[J].Journal of Desert Research,2011,30(4):1046-1051. | |
| Authors: | YANG Xian-rong WANG Jin-song ZHANG Jin-quan WEI Bo-long LIU Hong DENG Ji-lu JIA Xiao-qin |
| Affiliation: | YANG Xian-rong1,2,3,WANG Jin-song1,ZHANG Jin-quan2,WEI Bo-long3,LIU Hong3,DENG Ji-lu3,JIA Xiao-qin3(1.Key Open Laboratory of Arid Climatic Change and Disaster Reduction of CMA and Key laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province,Institute of Arid Meteorology,Chinese Meteorological Administration,Lanzhou 730020,China,2.Open Laboratory for Climate Studies,China Meteorological Administration,Beijing 100081,3.Linxia Meteorological Bureau of Gansu Province,Linxia 731100,G... |
| Abstract: | The relationships between strong sandstorms and oscillation of high-level jet stream are analyzed by means of the meteorological data during 1970—2010 in Gansu, China. The results show that there is a direct relation between the direction of high-level jet stream and the occurrence, development and influence scope of strong sandstorms. When the high-level jet stream arrives to the Balkhash Lake and converts to "C" or "L" type stream field, the strong cold air and disturbing jet stream develops towards Gansu province, and results in sudden strong sand-storms or even black winds in spring in Gansu province. This kind of weather process has characteristics of fast moving, large influence scope, short life history and great damages. |
| Keywords: | strong sandstorm oscillation high-level jet stream affected scope |
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