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标题

PDO指数、SOI指数与汉江流域气候变率的关系

作者

洪宇 丁名时 郑永宏 曲波 贺红

机构

武汉大学资源与环境科学学院 北京师范大学全球变化与地球系统科学研究院

摘要

利用1960—2012年汉江流域11个气象站的降水量和气温以及1960—2010年太平洋中高纬年代际振荡(PDO)指数和南方涛动指数(SOI)的月值数据,分析了汉江流域降水和气温与PDO和SOI指数之间的相关关系.结果表明,汉江流域上游5个气象站当年3—4月的总降水量与上年3月PDO指数存在95%置信水平以上的负相关,上年9月至当年6月总降水量与上年3—5月SOI指数平均值存在95%置信水平以上的正相关;中游3个气象站当年3—5月降水量与上年3—4月PDO指数平均值存在95%置信水平以上的负相关,当年11—12月总降水量与上年9月SOI指数存在95%置信水平以上的正相关;下游3个气象站当年3—4月总降水量与上年1—3月PDO指数平均值存在95%置信水平以上的负相关,上年11月至当年1月总降水量与上年8月SOI指数存在95%置信水平以上的负相关;汉江流域11个气象站当年3月气温与上年10月PDO指数存在95%置信水平以上的负相关,当年11—12月气温与上年8月SOI指数存在95%置信水平以上负相关.

关键词

太平洋中高纬年代际振荡; 南方涛动指数; 汉江流域; 降水; 气温;

引用

洪宇 丁名时 郑永宏 曲波 贺红. PDO指数、SOI指数与汉江流域气候变率的关系[J]. 北京师范大学学报(自然科学版), 2015, 51(1) : 91-95

基金

全球变化国家重大科学研究计划(2013CB956604,2010CB950504);国家自然科学基金资助项目(41101186);国家基础科学人才培养基金科研能力训练资助项目(J1103409)

分类号

P468

DOI

10.16360j.cnki.jbnuns.2015.01.020

Title

Relationships among PDO index, SOI index and climate variabilities in the Hanjiang River basin

Author

HONG Yu DING Mingshi ZHENG Yonghong QU Bo HE Hong

Affiliations

School of Resources and Environment Science, Wuhan University College of Global Change and Earth System Science, Beijing Normal University

Abstract

Monthly precipitation and mean temperature at eleven major weather stations in Hanjiang River basin were used to study relationships among PDO index, SOI index and climate variabilities. Statistical analysis showed that total precipitation in March-April at five weather stations in the upstream of Hanjiang River basin was correlated with PDO index in March of previous year. Total precipitation from September previous year to June present year at five weather stations in the upstream of Hanjiang River basin was correlated with average SOI index from March to May of previous year. Total precipitation from March to May at three weather stations in the midstream of Hanjiang River basin was significantly correlated with average PDO index of March and April in previous year. Total precipitation of November and December at three weather stations in the midstream of Hanjiang River basin was correlated with SOI index of September of previous year. Total precipitation of March and April at three weather stations in the downstream of Hanjiang River basin was significantly correlated with average PDO index of January to March of previous year. Total precipitation of November of the previous year to next January at three weather stations in the downstream of Hanjiang River basin was correlated with SOI index of August of previous year. Temperature in March at all eleven weather stations in Hanjiang River basin was correlated with PDO index of October of the previous year. Average temperature in November and December at all eleven weather stations in Hanjiang River basin was correlated with SOI index of August in the previous year.

Key words

PDO; SOI; Hanjiang River basin; Precipitation; Temperature

cite

HONG Yu, DING Mingshi, ZHENG Yonghong, QU Bo HE Hong. Relationships among PDO index, SOI index and climate variabilities in the Hanjiang River basin[J]. Journal of Beijing Normal University(Natural Science), 2015, 51(1) : 91-95

DOI

10.16360j.cnki.jbnuns.2015.01.020

Copyright © 2014 Journal of Beijing Normal University (Natural Science)
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