黄土高原春季降水对青藏高原感热异常的响应

摘要/Abstract

摘要： 利用1961—2000年黄土高原56站的春季降水和NCEP/NCAR再分析资料,采用SVD方法分析了黄土高原春季降水与青藏高原地面感热的关系。结果表明,黄土高原春季降水量与青藏高原地面感热的前两个模态代表了两场间的主要耦合特征,具有高度的时空相关。青藏高原感热对黄土高原降水影响最显著的区域在西部和南部、北部。前期高原感热场的第一、二模态对黄土高原春季干旱的预测具有指示意义。

关键词: 黄土高原, 春季降水, SVD方法, 青藏高原, 感热异常

Abstract: We used the Singular Value Decomposition (SVD) technique to analyze the relationship between sensible heat field in the Tibetan Plateau and spring precipitation in the Loess Plateau, based on the spring precipitation data during 1961—2000 from the 56 meteorological stations on the Loess Plateau and re-analyzed NCEP/NCAR data. The result showed that the first two modes derived from SVD indicated the principal coupled characteristics of the sensible heat field and the precipitation field, having closely time-space correlation. The most responding regions of regional spring precipitation to previous abnormity of the sensible heat on Qinghai-Xizang Plateau situate at the west, the south and the north of the Loess Plateau. It was found that the variation of the first two modes derived from SVD with the previous sensible heat field in the Qinghai-Xizang Plateau is a signal for the prediction of spring precipitation in the Loess Plateau.

Key words: the Loess Plateau, spring precipitation, Singular Value Decomposition(SVD) technique, the Qinghai-Xizang Plateau, sensible heat abnormity

中图分类号:

P426.6

叶燕华;李栋梁;陈晓光. 黄土高原春季降水对青藏高原感热异常的响应[J]. 中国沙漠, 2007, 27(2): 315-319.

YE Yan-hua;LI Dong-liang;CHEN Xiao-guang. Response of Spring Precipitation in Loess Plateau to Surface Sensible Heat in Qinghai-Xizang Plateau[J]. JOURNAL OF DESERT RESEARCH, 2007, 27(2): 315-319.

参考文献

[1]朱显谟. 黄土高原土壤与农业[M]. 北京:农业出版社,1989.
[2]赵景波,黄春长,朱显谟.黄土高原的形成与发展[J].中国沙漠,1999,19(4):333-337.
[3]赵景波,杜娟,黄春长.黄土高原侵蚀期研究[J].中国沙漠,2002,22(3):257-261.
[4]詹志明,彭云秀,王凯胜.黄土高原干旱指数分析[J]. 地域研究与开发,1999,18（2）:25-28.
[5]王涛,吴薇,薛娴,等.中国北方沙漠化土地时空演变分析[J].中国沙漠,2003,23(3):230-235.
[6]赵景波,李瑜琴.陕西黄土高原土壤干层对植树造林的影响[J].中国沙漠,2005,25 （3）: 370-373.
[7]朱抱真.大尺度热源、热汇和地形对西风带的定常扰动[J].气象学报,1957,28:122-140.
[8]Zheng Qinglin, Wu Jun. Numerical study on the dynamic and thermodynamic effects of the Qinghai-Xizang Plateau on the seasonal transition in the early summer in East Asia[J].Acta Meteor Sinica,1995,9(1):35-47.
[9]李栋梁,魏丽,李维京,等.青藏高原地面感热对于北半球大气环流和中国气候异常影响的诊断与数值试验[J].气候与环境研究,2003,8（1）:60-70.
[10]李栋梁,王涛,钟海玲.中国北方沙尘暴气候成因及未来趋势预测[J].中国沙漠,2004,24（3）:376-379.
[11]钟海玲,李栋梁,魏丽.我国北方春季沙尘暴的异常及其对冬季青藏高原地面感热的响应[J].中国沙漠,2004,24（3）:323-329.
[12]郭江勇,李耀辉,王文,等. 甘肃黄土高原春旱的气候特征及预测方法[J].中国沙漠,2004,24（2）:211-217.
[13]丁裕国,江志红.ＳＶＤ方法在气象诊断分析中的普适性[J].气象学报,1995,54(3),365-371.
[14]孙照渤,章基嘉,J M华莱士.冬季北大西洋地区海表温度与500百帕高度的奇异值分解[J].南京气象学院学报,1991,14(3):287-2922.
[15]王盘兴,周伟灿,王欣,等.气象向量场奇异值分解方法及其应用[J]. 南京气象学院学报,1997,20（2）:152-157.
[16]唐红玉,翟盘茂,常有奎.中国北方春季沙尘暴频数与北半球500hPa高度场的SVD分析[J].中国沙漠,2005,25（4）:570-576.
[17]叶燕华,郭江勇,王风.黄土高原春季降水的气候特征分析[J].干旱地区农业研究,2004,22（1）:11-17.