Anomalous winter winds decrease 2014 transition zone productivity in the NE Pacific

被引：122

作者：

Whitney, Frank A. ^{[1
]}

机构：

[1] Fisheries & Oceans Canada, Inst Ocean Sci, Sidney, BC, Canada

来源：

GEOPHYSICAL RESEARCH LETTERS | 2015年 / 42卷 / 02期

关键词：

SST; chlorophyll; ocean productivity; transition zone; northeast Pacific Ocean; CHLOROPHYLL FRONT; OCEAN; IMPACTS;

D O I：

10.1002/2014GL062634

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Wind-driven transport from the North Pacific in winter provides nutrients to a highly productive region in the transition zone between the subarctic and subtropics. This region supports many species of fish, marine mammals, and seabirds. In winter 2013/2014, anomalous winds from the south weakened nutrient transport in the eastern North Pacific, resulting in substantial decreases in phytoplankton biomass. By January 2014, waters were warmer than usual by 3.5 degrees C at the center of an affected area covering similar to 1.5x10(6)km(2). South of this area, winter chlorophyll levels dropped to the lowest levels seen since the Sea-viewing Wide Field-of-view Sensor satellite began taking measurements in 1997. It is anticipated that impacts will be felt in some fisheries and among migrating predators this coming year.

引用

页码：428 / 431

页数：4

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