Diagnostic Analysis of a Historical Extreme Snow Process in South of Shandong Province

  • HU Shunqi ,
  • CAO Zhangchi ,
  • CHEN Tao
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  • School of Atmospheric Sciences, Nanjing University, Najing 210046, China;Linyi Meteorological Bureau, Linyi 276004, China;Tancheng Meteorological Bureau, Tancheng 276199, China

Received date: 2016-09-21

  Online published: 2017-08-28

Abstract

For a more comprehensive understanding to the influence mechanism of the occurrence and development of historical extreme snow process in south of Shandong province, the cause and the dynamic structure on a snowstorm event occurred in south of Shandong Province from 23 to 24 November 2015 was investigated by the dynamic diagnosis with the routine sounding and surface observation data, OLR data of FY-2E satellite, NCEP/NCAR 1°×1° reanalysis data. The results show that:(1) Under the return-flow situation, the abnormal snowstorm occurred by the combined effect of the strong low-level southwest jet, shear line and northeast jet stream in the mid-troposphere. (2) The transfer of water vapor to southern Shandong via southwest low-level jet which also produced intense convergence center just above the sensitive area provided favorable water-vapor conditions for the occurrence of snowstorm. (3) The upper-level and the low-level jets were coupled. The positive vorticity advection in front of the trough lessened the pressure from low-level which caused its upward movement. It was conductive to the occurrence and development of snowstorm. (4) The southwest low-level jet and northerly winds had a convergence just over the southern area of Shandong. This was the main reason why the heavy snowfall concentrated in this region. (5) It was the strong cold air that made the rain turn to snow instantly, which also made the snow have a long duration. The above two reasons accounted for the occurrence of the extreme snowstorm. (6) The OLR analysis showed that the 3 hours average minimum center of OLR was closely related to the 3 hours maximum center of snowfall. The study on the characteristics of historical extreme snow process in south of Shandong province contributes to prediction ability of severe weather in the region, and is of tremendous importance to the disaster control and reduction.

Cite this article

HU Shunqi , CAO Zhangchi , CHEN Tao . Diagnostic Analysis of a Historical Extreme Snow Process in South of Shandong Province[J]. Plateau Meteorology, 2017 , 36(4) : 984 -992 . DOI: 10.7522/j.issn.1000-0534.2016.00134

References

[1]Hjelmfelt M R. 1990. Numerical study of the influence of environmental conditions on lake-effect snowstorms over Lake Michigan[J]. Mon Wea Rev, 118(1):138-150.
[2]Uccellini L W, Johnson D R. 1979. The coupling of upper and lower tropospheric jet stream and implication for the development of severe convective storm[J]. Mon Wea Rev, 107(6):682-703.
[3]Chen Xuezhen, Mu Jianli, Zhao Guixiang, et al. 2014. Analysis of characteristics of blizzard north China in the process of the jet[J]. Plateau Meteor, 33(4):1069-1075. DOI:10. 7522/j. issn. 1000-0534. 2013. 00205.<br/>陈雪珍, 慕建利, 赵桂香, 等. 2014.华北暴雪过程中的急流特征分析[J].高原气象, 33(4):1069-1075.
[4]Kang Zhiming, Luo Jinxiu, Guo Wenhua, et al. 2007. Causality analysis of snowstorm in Xizang Plateau in autumn of 2005[J]. Meteor Mon, 33(8):60-67.<br/>康志明, 罗金秀, 郭文华, 等. 2007. 2005年10月西藏高原特大暴雪成因分析[J].气象, 33(8):60-67.
[5]Shou Shaowen, Li Shenshen, Yao Xiuping. 2003. Mesoscale Meteorology[M]. Beijing:China Meteorological Press.<br/>寿绍文, 励申申, 姚秀萍. 2003.中尺度气象学[M].北京:气象出版社.
[6]Sun Dianguang, Huang Benfeng, Xue Yanbo, et al. 2016. Analysis on the difference of airflow structure of three ocean-effect snowstorms in Shandong Peninsula[J]. Plateau Meteor, 35(3):800-809. DOI:10. 7522/j. issn. 1000-0534. 2015. 00017.<br/>孙殿光, 黄本峰, 薛?波, 等. 2016.山东半岛三次冷流暴雪气流结构差异性分析[J].高原气象, 35(3):800-809.
[7]Sun Zhongyi, Wang Jun, Jin Bingling, et al. 2010. Diagnostic analysis on a snowstorm weather process in north of Henan Province[J]. Plateau Meteor, 29(5):1338-1344.<br/>孙仲毅, 王军, 靳冰凌, 等. 2010.河南省北部一次暴雪天气过程诊断分析[J].高原气象, 29(5):1338-1344.
[8]Wu Xiao. 2009. Analysis of satellite OLR data for the extremely icy rain and snow weather events in China during January-February 2008[J]. Meteor Mon, 35(4):87-93.<br/>吴晓. 2009. 2008年初全国雨雪冰冻天气的OLR资料分析[J].气象, 35(4):87-93.
[9]Yang Chengfang, Jiang Peng, Zhang Shaolin, et al. 2013. Analysis on temperature of precipitation types in cold seasons in Shangdong[J]. Meteor Mon, 39(3):355-361.<br/>杨成芳, 姜鹏, 张少林, 等. 2013.山东冬半年降水相态的温度特征统计分析[J].气象, 39(3):355-361.
[10]Yang Chengfang, Li Zechun, Li Jing, et al. 2008. Shandong peninsula a continuous strong cold flow snowfall process analysis of the causes[J]. Plateau Meteor, 27(2):442-450.<br/>杨成芳, 李泽椿, 李静, 等. 2008.山东半岛一次持续性强冷流降雪过程的成因分析[J].高原气象, 27(2):442-450.
[11]Yang Chengfang, Zhou Xuesong, Li Jing, et al. 2015. Study on shear snowstorm by Ingredients-Based methodology[J]. Plateau Meteor, 34(5):1402-1413. DOI:10. 7522/j. issn. 1000-0534. 2014. 00108.<br/>杨成芳, 周雪松, 李静, 等. 2015.基于构成要素的一次切变线暴雪天气分析[J].高原气象, 34(5):1402-1413.
[12]Yang Lianmei, Liu Wen. 2016. Cause analysis of persistent heavy snow processes in the Northern Xinjiang[J]. Plateau Meteor, 35(2):507-519. DOI:10. 7522/j. issn. 1000-0534. 2014. 00161.<br/>杨莲梅, 刘雯. 2016.新疆北部持续性暴雪过程成因分析[J].高原气象, 35(2):507-519.
[13]Yang Xia, Zhang Yunhui, Zhao Yizhou, et al. 2015. Analysis on rare snowstorm in west of Southern Xinjiang[J]. Plateau Meteor, 34(5):1414-1423. DOI:10. 7522/j. issn. 1000-0534. 2014. 00063.<br/>杨霞, 张云惠, 赵逸舟, 等. 2015.南疆西部一次罕见大暴雪过程分析[J].高原气象, 34(5):1414-1423.
[14]Yu Zhangxiao, Li Faran, Yang Juezheng, et al. 1981. An analysis on a case of heavy rainfall on the "Baiu Front"associated with an upper jet streak[J]. Journal of Hangzhou University:Natural Science Edition, 8(1):104-109.<br/>俞樟孝, 李法然, 杨厥正, 等. 1981.一次高空急流中心引起的梅雨锋暴雨分析[J].杭州大学学报:自然科学版, 8(1):104-109.
[15]Zhang Qin, Ding Zhiying, Yang Chengfang, et al. 2015. Diagnostic analysis of a historical extreme snow process in Shandong[J]. Plateau Meteor, 34(4):1131-1138. DOI:10. 7522/j. issn. 1000-0534. 2014. 00009.<br/>张芹, 丁治英, 杨成芳, 等. 2015.山东一次历史极端降雪过程的诊断分析[J].高原气象, 34(4):1131-1138.
[16]Zhu Qiangen, Lin Jinrui, Shou Shaowen, et al. 2007. Principles and methods of weather[M]. 4th Edition. Beijing:China Meteorological Press.<br/>朱乾根, 林锦瑞, 寿绍文, 等. 2007.天气学原理和方法[M]. 4版.北京:气象出版社.
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