|
|
|
| Dynamic Mechanism of Dust Weather with Different Intensities in Ningxia, China |
| Chen Yuying1,2, Chen Nan1,2, Tan Zhiqiang2 |
1. Ningxia Key Laboratory for Meteorological Disaster Prevention and Reduction, Yinchuan 750002, China;
2. Ningxia Meteorological Observatory, Yinchuan 750002, China |
|
|
|
|
Abstract By using conventional observation data and the ECWMF 6-hourly reanalysis data with resolution 0.25°×0.25°,the circulation systems, high and low jets effected on strong wind and dust weather on May 18, February 28, March 9 in 2013 are analyzed. The results show that under the circulation background that high pressure at west Ningixa and low pressure at east Ningxia and affected by the combined effects of Mongolia-Xinjiang high pressure ridge, temperature, westerly trough, ground cyclone, cold front, high and low jets, secondary circulation formed in the middle and lower atmosphere in 90°-110°E. Due to downward momentum of the upper jet stream and high potential vorticity through the secondary circulation, low level jet begin to form. Meanwhile strong turbulent mixing occurs in the boundary layer, strong winds and dust weather produces. The important motivation factors that cause different intensities of dust weather in Ningxia are the intensity and the southward way of the cold air, the position and strength of high pressure ridge, the area of high and low jets, the southward location of low level jet, the height reached by the upper strong wind, the strength of the secondary circulation, and the activities of high potential vorticity at upper level and low level jet at 850 hPa over Ningxia.
|
|
Received: 14 February 2014
Published: 20 March 2015
|
|
|
[1] 牛生杰,孙继明,桑建人.贺兰山地区沙尘暴发生次数的变化趋势[J].中国沙漠,2000,20(1):55-58.
[2] 牛生杰,章澄昌,孙继明.贺兰山地区沙尘暴若干问题的观测研究[J].气象学报,2001,(2):196-205.
[3] 陈楠,陈豫英.宁夏近四十年大风、沙尘演变趋势分析[M]//天气预报技术文集.北京:气象出版社,2001:226-230.
[4] 赵光平,郑广芬,王卫东.宁夏特强沙尘暴气候背景及其成灾规律研究[J].中国沙漠,2003,23(4):420-427.
[5] 赵光平,陈楠.生态退化状况下的宁夏沙尘暴发生发展规律特征[J].中国沙漠,2005,25(1):49-53.
[6] 王式功,董光荣,陈惠忠,等.沙尘暴研究的进展[J].中国沙漠,2000,20(4):349-356.
[7] 周自江,王锡稳,牛若芸.近47年中国沙尘暴气候特征研究[J].应用气象学报,2002,13(2):193-200.
[8] 赵光平,王凡,杨淑萍,等.宁夏区域性强沙尘暴天气成因及其预报方法的研究[M]//中国沙尘暴研究.北京:气象出版社,1997:52-58.
[9] 赵光平,陈楠,杨建玲,等.环流及冷空气类型与宁夏沙尘暴落区的对应关系[J].中国沙漠,2003,23(6):642-645.
[10] 胡隐樵,光田宇.强沙尘暴发展与干飑线--黑风暴形成的一个机理分析[J].高原气象,1996,15(2):178-185.
[11] 郑新江,刘诚,崔永平.沙暴天气的云图特征分析[J].气象,1995,21(2):27-31.
[12] 徐希慧.塔里木盆地沙尘暴的卫星云图分析与研究[M]//中国沙尘暴研究.北京:气象出版社,1997:88-91.
[13] 江吉喜.一次特大沙尘暴成因的卫星云图分析[J].应用气象学报,1995,6(2):177-184.
[14] 赵金霞,赵玉洁,徐灵芝,等.蒙古气旋产生强沙尘暴的诊断分析[J].中国沙漠,2011,31(5):1309-1315.
[15] 金正润,牛生杰,河惠卿,等.利用EP/TOMS气溶胶指数分析中国和韩国的沙尘天气过程[J].中国沙漠,2009,29(4):750-756.
[16] 井喜,屠妮妮,井宇.位涡和Q矢量诊断在毛乌素沙地沙尘天气预报中的应用[J].中国沙漠,2008,28 (4):762-769.
[17] 邱金桓,孙金辉.沙尘暴的光学遥感及分析[J].大气科学,1994,18(1):1-10.
[18] 王伏村,付有智,李红,等.一次秋季沙尘暴的诊断和天气雷达观测分析[J].中国沙漠,2008,28 (1):170-177.
[19] 黄艇,宋煜,胡文东,等.大连地区一次沙尘过程的激光雷达观测研究[J].中国沙漠,2010,30 (4):983-989.
[20] 王敏仲,魏文寿,何清,等.边界层风廓线雷达资料在沙尘天气分析中的应用[J].中国沙漠,2011,31(2):352-356.
[21] 张小玲,程丛兰,谢璞,等.连续强沙尘天气的发展和时空演变机制的数值模拟[J].中国沙漠,2007,27(1):137-146.
[22] 贾丽红,李海燕,李如琦,等.南疆“3.12”强沙尘暴天气数值模拟与诊断分析[J].中国沙漠,2012,32(4):1135-1141.
[23] 段海霞,李耀辉,蒲朝霞,等.高空急流对一次强沙尘暴过程沙尘传输的影响[J].中国沙漠,2013,33(5):1461-1472.
[24] 文润琴.宁夏寒潮3-6天的客观因子模式预报方法[J].宁夏气象,1994,(1):5-7.
[25] 杨先荣,王劲松,何玉春,等.甘肃中部强沙尘暴成因分析[J].中国沙漠,2008,28(3):567-571.
[26] 任余龙,王劲松.影响中国西北及青藏高原沙尘天气变化的因子分析[J].中国沙漠,2009,29(4):734-743.
[27] 陈晓光,纪晓玲,刘庆军,等.200 hPa高空急流与宁夏春季沙尘暴过程的特征分析[J].中国沙漠,2006,26(2):238-242.
[28] 张胜才,杨先荣,张锦泉,等.春季西风急流异常对甘肃极端天气的影响[J].中国沙漠,2012,32(4):1089-1094.
[29] 尹宪志,任余龙,马旭洁,等.2011年4月28-29日中国北方强沙尘暴发生机制位涡分析[J].中国沙漠,2013,33(1):195-204.
[30] 王伏村,许东蓓,王宝鉴,等.河西走廊一次特强沙尘暴的热力动力特征分析[J].气象,2012,38(8):950-959.
[31] 姜学恭,李彰俊,程丛兰,等.地面加热对沙尘暴数值模拟结果的影响研究[J].中国沙漠,2010,30(1):182-192. |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
2015, Vol. 35 
