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Large Volume (20L+) Filtration of Coastal Seawater Samples
Published on: June 18, 2009
越来越多的河流排放到北冰洋
Bruce J Peterson1, Robert M Holmes, James W McClelland
1The Ecosystems Center, Marine Biological Laboratory, Woods Hole, MA 02543, USA. peterson@mbl.edu
Science (New York, N.Y.)
|December 14, 2002
概括
从六条主要的欧亚大陆河流流入北冰洋的淡水排放量在1936年至1999年间增加了7%. 河流排放的增加与气候模式有关,可能会影响海洋循环.
科学领域:
- 水文学的水文学
- 北极海洋学 北极海洋学
- 气候科学 气候科学
背景情况:
- 北极的淡水排放影响海洋循环和气候.
- 长期监测欧亚河流排水对于了解北极系统变化至关重要.
研究的目的:
- 分析六个最大的欧亚大陆河流向北冰洋排放的年度淡水排放趋势.
- 调查河流排水,气候振荡和全球温度之间的相关性.
主要方法:
- 综合了1936年至1999年的历史河流监测数据.
- 统计分析以确定放电趋势和相关性.
主要成果:
- 从1936年到1999年,平均每年淡水排放量增加了7% (2.0 +/- 0.7公里3/年).
- 总排放量现在比监测期开始时增加了128公里3/年.
- 排放显示与北大西洋振荡和全球平均表面空气温度有显著的相关性.
结论:
- 已经观察到北极淡水流量显著增加.
- 淡水排放的这种变化对北冰洋的循环和全球气候模式有潜在的影响.
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