海洋科学Issue(2)：1-5,5.DOI:10.11759/hykx20120820001
淮河流域5~6月降水的年际及年代际变化
Inter-annual and inter-decadal variations of precipitation anomalies during May to July in the Huaihe River Valley
摘要
Abstract
Rainfall anomalies in the Huaihe River Valley (HRV) is one of the most important factors for green tides outbreaks. So study of the rainfall anomalies of HRV is very important for forecast of the green tides in the Yellow Sea. The monthly precipitation data from 1951 to 2011 used here was from the National Meteorological Information Center, 10 stations in HRV and 15 stations in the Changjiang River Valley (CRV). May-June (MJ) average rainfall anomalies showed an upward trend in HRV from 2000 to 2009, while a downward trend in CRV. Correlation analyses had been done between MJ average rainfall anomalies and the dipole mode index (DMI), and the Pacific decadal oscillation (PDO) index, respectively. A most significant positive correlation was found between the DMI 6 months ago and the MJ average rainfall anomalies of HRV of the year, confidence exceeding 95%. The North Pacific SST (north of 20°N) as well as the PDO index of 20 months ago, negatively correlated with MJ average precipitation anomalies in HRV of the year significantly, confidence exceeding 95%. In summary, these data indicate that DMI and PDO index demonstrate distinct indications of inter-annual and inter-decadal changes for MJ average rainfall in HRV, respectively.关键词
降水异常/淮河流域/年际/年代际变化/太平洋年代际振荡(PDO)/印度洋偶极子指数(DMI)Key words
precipitation anomaly/the Huaihe River Valley/inter-annual/inter-decadal/the Pacific decadal oscillation (PDO)/dipole mode index (DMI)分类
海洋科学引用本文复制引用
王然,于非,司广成..淮河流域5~6月降水的年际及年代际变化[J].海洋科学,2014,(2):1-5,5.基金项目
中国科学院战略性先导科技专项(XDA1102030102) （XDA1102030102）
国家海洋局公益性项目(201005006) （201005006）
国家自然科学基金(41176018) （41176018）
国家重点基础研究发展计划项目(2010CB950400) （2010CB950400）
