期刊
NATURE GEOSCIENCE
卷 9, 期 7, 页码 505-+出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NGEO2722
关键词
-
资金
- Office of Naval Research [N00014-12-1-0939]
- National Science Foundation [OCE-1419450, OCE-1419323]
- Bureau of Ocean Energy Management
- California Ocean Protection Council
- Directorate For Geosciences [1419450] Funding Source: National Science Foundation
- Division Of Ocean Sciences [1419450] Funding Source: National Science Foundation
Coastal winds and upwelling of deep nutrient-rich water along subtropical eastern boundaries yield some of the ocean's most productive ecosystems(1). Simple indices of coastal wind strength have been extensively used to estimate the timing and magnitude of biological productivity on seasonal and interannual timescales(2) and underlie the prediction that anthropogenic climate warming will increase the productivity by making coastal winds stronger(3-6). The effect of wind patterns on regional net primary productivity is not captured by such indices and is poorly understood. Here we present evidence, using a realistic model of the California Current system and satellite measurements, that the observed slackening of the winds near the coast has little effect on near-shore phyto-plankton productivity despite a large reduction in upwelling velocity. On the regional scale the wind drop-off leads to substantially higher production even when the total upwelling rate remains the same. This partial decoupling of productivity from upwelling results from the impact of wind patterns on alongshore currents and the eddies they generate. Our results imply that productivity in eastern boundary upwelling systems will be better predicted from indices of the coastal wind that account for its off shore structure.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据