The Relationship Between the Anomalous Snow Cover on the Qinghai Tibetan Plateau and Atmospheric Anomalous Circulation

Zhong Aihua; Yan Huasheng; Li Yueqing; Xia Lan

Vol.21, NO.1, 2010

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2010 > 21(1): 37-46

Zhong Aihua, Yan Huasheng, Li Yueqing, et al. The relationship between the anomalous snow cover on the Qinghai Tibetan Plateau and atmospheric anomalous circulation. J Appl Meteor Sci, 2010, 21(1): 37-46.

Citation:

Zhong Aihua, Yan Huasheng, Li Yueqing, et al. The relationship between the anomalous snow cover on the Qinghai Tibetan Plateau and atmospheric anomalous circulation. J Appl Meteor Sci, 2010, 21(1): 37-46.

Citation:

PDF( 3099 KB)

The Relationship Between the Anomalous Snow Cover on the Qinghai Tibetan Plateau and Atmospheric Anomalous Circulation

1.
Dali Meteorological Office of Yunnan Province, Dali 671000
2.
Department of Atmospheric Sciences, Yunnan Univ ersity, Kunming 650091
3.
I nstitute of Plateau Meteorology, CMA, Chengdu 610071
4.
Chinese Academy of Meteorological Sciences, Beijing 100081

Received Date: 2009-01-04
Rev Recd Date: 2010-01-12
Publish Date: 2010-02-28

Abstract

Abstract

Based on the previous researches, the longer time series about the typically anomalous snow cover years from 1957 to 2003 are confirmed initially. Using NCEP data of global monthly mean geopotential height (144×73) at 100 hPa and 500 hPa, the relationship between anomalous snow cover and atmospheric anomalous circulation at the Qinghai Tibetan Plateau is analyzed from December to next May of 1957 to 2003. And the possible mechanisms in which the atmospheric anomalous circulation affects the anomalous snow cover at the Qinghai Tibetan Plateau are propounded. It is found that the atmospheric circulation affects the weather and climate and lead to the snow cover anomaly first, and the abnormal snow cover affects the atmospheric circulation in slighter extent subsequently. The atmospheric pressure of key tropical areas changes in an opposite phase to that of key areas in the middle and high latitudes of Southern Hemisphere. Meridional circulation of two hemispheres is strengthened by this strong meridional atmospheric pressure gradient. Abnormal Antarctic Oscillation causes anomalous Mascarene high and Australia high by meridional circulation, and then they impact local meridional circulation of East Asia through meridional teleconnection which makes the anomalous climate of winter in East Asia, causing the abnormal snow cover at the Qinghai Tibetan Plateau at last. On the basis of results, a statistical method to discriminate the anomalous years of snow cover at the Qinghai Tibetan Plateau objectively and quantitatively is proposed, applying the 2 discriminant equation of the three factor optimal subset. According to the typical anomalous snow cover years given, the discriminant equation is built and argued time and again. Finally, the abnormal snow cover years from 1957 to 2003 of the Qinghai Tibetan Plateau are distinguished.
- the Qinghai Tibetan Plateau;
- abnormal snow cover in winter and next spring;
- geopotential height field;
- the discriminant equation

FullText(HTML)

References(24)

Figures and Tables

图 1 冬季500 hPa位势高度场的t检验分布

(阴影区表示通过0.05的显著性检验，深色阴影为正值区，浅色阴影为负值区)(a)12月，(b)1月，(c)2月

Fig. 1 t-test of 500 hPa geopotential height field in winter

(shadow :signifi cance area with 0.05 level; dark shadow :positive; light shadow :negative)(a) Decmber, (b) January, (c) February

DownLoad: Full-Size Img PowerPoint

图 2 冬季100 hPa位势高度场的t检验分布 (其他说明同图 1)

(a)12月，(b)1月，(c)2月

Fig. 2 Same as in Fig.1, except for 100 hPa

(a) Decmber, (b) January, (c) February

DownLoad: Full-Size Img PowerPoint

图 3 春季500 hPa位势高度场的t检验分布

(其他说明同图 1)(a)3月，(b)4月，(c)5月

Fig. 3 Same as in Fig.1, except for Spring

(a) March, (b) April, (c) May

DownLoad: Full-Size Img PowerPoint

图 4 建立二级判别方程时选中的3个最优因子组合

(t检验分布图中用黑色方框标识出来的区域，它们的高度场区域平均值为建立方程的最优因子)(a)12月，500 hPa，(b)5月，500 hPa，(c)4月，100 hPa

Fig. 4 Three best factors are picked up by applying the 2 discriminant equation

(regional mean geopotential height field of these areas marked by black frame as factors)(a) at 500 hPa in December, (b) at 500 hPa in May, (c) at 100 hPa in April

DownLoad: Full-Size Img PowerPoint

表 1 青藏高原冬春季积雪异常典型年划分情况统计表

Table 1 The typically anomalous snow cover years at the Qinghai-Tibetan Plateau in winter and the next spring

表 2 分类统计表

Table 2 Category table

表 3 判别结果

Table 3 The result of discrimination and contrast

References

[1]	韦志刚, 黄荣辉, 陈文, 等.青藏高原地面站积雪的空间分布和年代际变化特征.大气科学, 2002, 26(4):496-508. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXK200204006.htm
[2]	韦志刚, 罗四维, 董文杰, 等.青藏高原积雪资料分析及其与我国夏季降水的关系.应用气象学报, 1998, 9(增刊):39-46. http://www.cnki.com.cn/Article/CJFDTOTAL-YYQX8S1.005.htm
[3]	陈烈庭, 阎志新.青藏高原冬春季异常雪盖影响初夏季风的统计分析∥1977 —1978年青藏高原气象会议论文集.北京:科学出版社, 1979 :151-161.
[4]	张顺利, 陶诗言.青藏高原积雪对亚洲夏季风影响的诊断及数值研究.大气科学, 2001, 25(3):372-390. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXK200103008.htm
[5]	郭其蕴, 王继琴.青藏高原的积雪及其对东亚季风的影响.高原气象, 1986, 5(2):116-124. http://www.cnki.com.cn/Article/CJFDTOTAL-GYQX198602001.htm
[6]	李庆, 陈月娟.青藏高原积雪异常对亚洲夏季风气候的影响.解放军理工大学学报 (自然科学版), 2006, 7(6):605-612. http://www.cnki.com.cn/Article/CJFDTOTAL-JFJL200606019.htm
[7]	陈乾金, 高波, 张强.青藏高原冬季雪盖异常与冬夏季风变异及其相互联系的物理诊断研究.大气科学, 2000, 24(4):477-492. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXK200004004.htm
[8]	蔡学湛, 吴滨.青藏高原雪盖异常的环流特征及其与我国夏季降水的关系.应用气象学报, 2005, 16(1):89-95. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=20050112&flag=1
[9]	陈乾金, 高波, 李维京, 等.青藏高原冬季积雪异常和长江中下游主汛期旱涝及其与环流关系的研究.气象学报, 2000, 58(5):582-595. http://www.cnki.com.cn/Article/CJFDTOTAL-QXXB200005006.htm
[10]	蔡学湛, 吴滨, 温珍治.青藏高原雪盖异常对福建雨季旱涝影响的环流诊断.南京气象学院学报, 2002, 25(6):800-806. http://www.cnki.com.cn/Article/CJFDTOTAL-NJQX200206010.htm
[11]	马乃孚, 杨景勋.冬季青藏高原积雪与湖北汛期降水.华中师范大学学报 (自然科学版), 2000, 34(4):482-484. http://www.cnki.com.cn/Article/CJFDTOTAL-HZSZ200004027.htm
[12]	王记芳, 焦建莉.青藏高原冬季积雪与河南汛期降水关系.河南气象, 2001, 1 :26-27. http://www.cnki.com.cn/Article/CJFDTOTAL-HNQX200101013.htm
[13]	赵红旭.青藏高原积雪与云南夏季降水及气温的关系.气象, 1999, 25(4):48-51. http://www.cnki.com.cn/Article/CJFDTOTAL-QXXX904.011.htm
[14]	韦志刚.青藏高原积雪异常的持续性研究.冰川冻土, 2001, 23(3):225-230. http://www.cnki.com.cn/Article/CJFDTOTAL-BCDT200103002.htm
[15]	赵溱.欧亚大陆雪盖与东亚夏季风.气象, 1984, 7 :27-29. http://www.cnki.com.cn/Article/CJFDTOTAL-QXXX198407008.htm
[16]	章少卿.冬春季欧亚大陆雪盖面积与我国东部气温、降水的统计关系.科学通报, 1985, 15 :1167-1170. http://www.cnki.com.cn/Article/CJFDTOTAL-KXTB198515013.htm
[17]	徐国昌, 李珊, 洪波, 等.青藏高原雪盖对我国环流和降水的影响.应用气象学报, 1994, 5(1):62-67. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=20010347&flag=1
[18]	吴统文, 钱正安, 李培基, 等.青藏高原多、少雪年后期西北干旱区降水的对比分析.高原气象, 1998, 17(4):364-372. http://www.cnki.com.cn/Article/CJFDTOTAL-GYQX804.003.htm
[19]	周国良, 范钟秀, 彭公炳, 等.青藏高原积雪与长江中上游汛期的旱涝∥长江三峡致洪暴雨与洪水的中长期预报.北京:气象出版社, 1993 :314-319.
[20]	吉林省气象台, 吉林市气象台.100毫巴极涡和南亚高压的活动与东北区夏季低温的关系.气象学报, 1981, 39(4):483-494. http://www.cnki.com.cn/Article/CJFDTOTAL-QXXB198104010.htm
[21]	苏志侠, 吕世华, 罗四维.美国NCEP/ NCA R全球再分析资料及其初步分析.高原气象, 1999, 18(2):209-218.
[22]	范可, 王会军.南极涛动的年际变化及其对东亚冬春季气候的影响.中国科学 (D辑), 2006, 36(4):1-7. http://cpfd.cnki.com.cn/Article/CPFDTOTAL-ZGQX200510001269.htm
[23]	黄士松, 汤明敏.论东亚夏季风体系的结构.气象科学, 1987, 7(3):1-16. http://www.cnki.com.cn/Article/CJFDTOTAL-QXKX198703000.htm
[24]	黄士松, 汤明敏.西北太平洋和南印度洋上环流系统的中期振荡与遥相关.气象科学, 1988, 8(4):1-13. http://www.cnki.com.cn/Article/CJFDTOTAL-QXKX198804000.htm