TELECONNECTIONS BETWEEN NORTH PACIFIC SST ANOMALIES AND GROWING-SEASON EXTENDED DRY SPELLS ON THE CANADIAN PRAIRIES

被引：41

作者：

BONSAL, BR ^{[1
]}

CHAKRAVARTI, AK ^{[1
]}

LAWFORD, RG ^{[1
]}

机构：

[1] NATL HYDROL RES CTR,SASKATOON S7N 3H5,SK,CANADA

来源：

INTERNATIONAL JOURNAL OF CLIMATOLOGY | 1993年 / 13卷 / 08期

关键词：

TELECONNECTIONS; EXTENDED DRY SPELLS; CANADIAN PRAIRIES; NORTH PACIFIC; SST ANOMALIES; 500 HPA RIDGING;

D O I：

10.1002/joc.3370130805

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

This investigation documents the relationships between anomalous North Pacific sea-surface temperatures (SSTs) and the occurrence of growing season extended dry spells on the Canadian Prairies. Results show a significant correlation between extended dry spells and a positive SST anomaly gradient in the east-central North Pacific. The gradient exists between an area of anomalously cold water in the east-central North Pacific in the area 30-degrees-N-40-degrees-N latitude and 165-degrees-W-135-degrees-W longitude, and an area of anomalously warm water along the central west coast of North America in the area 45-degrees-N-55-degrees-N latitude and 130-degrees-W-125-degrees-W longitude. A probability model shows that the longer this positive gradient persists, the greater the probability of a major extended dry spell on the Canadian Prairies.

引用

页码：865 / 878

页数：14

共 35 条

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