STATISTIC ANALYSIS AND NUMERICAL EXPERIMENT ON RELATIONSHIP OF TIBETAN PLATEAU THERMAL CONDITION AND MEIYU IN YANGTZE RIVER BASIN

Ge Xuyang; Tao Liying; Zhu Yongti; Li Yanhua

Vol.12, NO.2, 2001

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2001 > 12(2): 159-166

Ge Xuyang, Tao Liying, Zhu Yongti, et al. Statistic analysis and numerical experiment on relationship of Tibetan Plateau thermal condition and Meiyu in Yangtze River Basin. J Appl Meteor Sci, 2001, 12(2): 159-166.

Citation:

Ge Xuyang, Tao Liying, Zhu Yongti, et al. Statistic analysis and numerical experiment on relationship of Tibetan Plateau thermal condition and Meiyu in Yangtze River Basin. J Appl Meteor Sci, 2001, 12(2): 159-166.

Citation:

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STATISTIC ANALYSIS AND NUMERICAL EXPERIMENT ON RELATIONSHIP OF TIBETAN PLATEAU THERMAL CONDITION AND MEIYU IN YANGTZE RIVER BASIN

1.
Shanghai Climate Center, Shanghai 200030
2.
Shanghai Typhoon Institute, Shanghai 200030

Received Date: 1999-11-10
Rev Recd Date: 2000-02-02
Publish Date: 2001-05-31

Abstract

Abstract

Based on observation data, the correlation analysis of the Tibetan Plateau thermal condition and Meiyu in the Yangtze River Basin is conducted. The statistic results indicate that the surface thermal condition is correlated with the flood/drought in the Yangtze River Basin. If there exists abnormally warm thermal condition over the southern Tibet, then there will be a flooding summer in the Yangtze River Basin and vice versa. Based on such results, two sensitive experiments are designed by use of the NCAR RegCM2 model, in which the ground temperature of the northern or southern Tibetan Plateau increases or decreases respectively. The experiments simulated the features very well and validated the statistic results.
- Tibetan Plateau thermal condition;
- Summer rainfall;
- Numerical experiment

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Figures and Tables

图 1a 旱、涝年青藏高原前冬 (1~3月) 10~200 cm地温差值图 (涝年减去旱年)

(单位: ℃, 阴影区为大于0的区域, 粗点线大致为青藏高原3000 m等高线)

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图 1b 青藏高原前冬10~200 cm地温南北两侧地温梯度与7月我国降水量的相关系数 (1979~1995年) 分布图 (等值线间隔为0.1)

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图 2 旱、涝年份青藏高原东侧 (95°~100°E平均) 逐旬地温差值的纬度-时间剖面图 (单位: ℃)

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图 3a T1与CT的降水偏差相对百分率 (等值线间隔为15%)

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图 3b T1与CT的850 hPa环流差值图

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图 4a T2与CT的降水偏差相对百分率

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图 4b T2与CT的850 hPa环流差值图

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References

[1]	章基嘉.1991年江淮暴雨期间环流异常的动力延伸试验.气象学报, 1994, 52 (2): 180~186. http://www.cnki.com.cn/Article/CJFDTOTAL-QXXB402.006.htm
[2]	朱乾根, 白虎志. 青藏高原冬季TBB特征及其与夏季亚澳季风异常的联系. 见: 何金海主编. 亚洲季风研究的新进展. 北京: 气象出版社, 1996. 143~149.
[3]	汤懋苍.冬季地温分布与春夏季降水相关的统计分析.高原气象, 1986, 5 (1): 40~50. http://www.cnki.com.cn/Article/CJFDTOTAL-GYQX198601004.htm
[4]	宋正山, 杨辉. 我国夏季降水和青藏高原的作用. 见: 黄荣辉主编. 灾害性气候的过程及诊断. 北京: 气象出版社, 1995. 114~119.
[5]	董敏, 余建锐.青藏高原春季积雪对大气环流影响的模拟研究.应用气象学报, 1997, 7 (增刊): 100~109. http://www.cnki.com.cn/Article/CJFDTOTAL-YYQX7S1.013.htm
[6]	徐明, 朱永褆.青藏高原冬季积雪对华东梅汛期降水影响的数值试验.应用气象学报, 1997, 7 (增刊): 110~115. http://www.cnki.com.cn/Article/CJFDTOTAL-YYQX7S1.014.htm
[7]	刘永强, 丁一汇, 赵宗慈. 1991年江淮特大异常降水的区域气候模拟. 见: 赵宗慈主编. 中国短期气候预测的模式研究. 北京: 气象出版社, 1995. 106~120.
[8]	万齐林. 区域气候数值模式研究及试验. 见: 赵宗慈主编. 中国短期气候预测的模式研究. 北京: 气象出版社, 1995. 121~132.
[9]	金祖辉, 村上胜人. 东亚季风区对流活动的年际变异及与江淮流域旱涝关系的研究. 见: 何金海主编. 东亚季风研究的新进展. 北京: 气象出版社, 1996. 88~98.