期刊
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
卷 127, 期 6, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2021JC017348
关键词
phytoplankton biomass; atmospheric blocking; canary upwelling system; eastern boundary upwelling systems; climate change
类别
资金
- National Natural Science Foundation of China [41976164]
- National key research and development program of China [2016YFC1400905]
- Natural Science Foundation of Zhejiang Province for Distinguished Young Scholars [LR20D060002]
Using a 20-year time-series record, this study identified a strong linkage between phytoplankton variability in the eastern boundary upwelling systems (EBUS) and a high latitude, large-scale atmospheric process. Blocking events over Greenland caused a weakening of wind-driven upwelling, leading to inhibited phytoplankton growth. These findings underscore the importance of atmospheric connections in coastal upwelling ecosystems.
The oceanic ecosystems in the eastern boundary upwelling systems (EBUS) are expected to be influenced by climate change, but specific mechanisms describing their connections are not well understood. Using a 20-year time-series record of satellite and climate data, we identified a strong linkage between phytoplankton variability in a EBUS and a high latitude, large-scale atmospheric process. The winter-spring phytoplankton variability in the Canary Current Upwelling System was associated to the atmospheric blocking events over Greenland. These Greenland blocking events were primarily caused by the persistence of quasi-stationary, large-scale high atmosphere pressure fields. These fields forced the eddy-driven jet stream to shift south, which caused a weakening of the equatorward alongshore winds over the upwelling system. As a result, the wind-driven upwelling was suppressed, and phytoplankton growth was inhibited. These results identified a previously unknown source driving interannual phytoplankton variability in the EBUS, underscoring the importance of contributions of atmospheric connections on the coastal upwelling ecosystems.
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