Thirty Years of GOSHIP and WOCE Data: Atlantic Overturning of Mass, Heat, and Freshwater Transport
Thirty Years of GOSHIP and WOCE Data: Atlantic Overturning of Mass, Heat, and Freshwater Transport
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DOI：
10.1029/2021gl096527
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发表时间：
2022-02
影响因子：
5.2
通讯作者：
V. Caínzos;A. Hernández‐Guerra;G. McCarthy;E. McDonagh;M. Armas;M. Pérez-Hernández
中科院分区：
文献类型：
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作者：
V. Caínzos;A. Hernández‐Guerra;G. McCarthy;E. McDonagh;M. Armas;M. Pérez-Hernández
大西洋经向翻转环流（AMOC）在全球气候、热量再分配和淡水方面起着至关重要的作用。预计由于人为气候变化，它将下降，对全球气候产生重大影响。自2000年代以来，通过现场观测准确评估AMOC强度激发了大西洋的一些专门观测系统。然而，对于AMOC及其相关的热量和淡水输送是否正在放缓，尚未达成共识。这些专用系统太新，无法检测长期趋势。我们已经分析了横跨大西洋的纬向剖面的水文数据，这些数据在AMOC观测的时代之前和重叠了30年。我们的结果显示，在过去的30年里，在整个大西洋分析的所有部分的AMOC没有变化。我们还发现，南大西洋淡水输出的增加与上层盐度的增加有关。
The Atlantic Meridional Overturning Circulation (AMOC) plays a vital role in global climate, redistributing heat, and freshwater. It is predicted to decline due to anthropogenic climate change, with major implications for global climate. Accurately assessing AMOC strength with in situ observations has inspired a number of dedicated observing systems in the Atlantic since the 2000s. However, no consensus has been reached on whether the slowdown of the AMOC and its associated heat and freshwater transports is occurring. These dedicated systems are too recent to detect long‐term trends. We have analyzed hydrographic data from zonal sections across the Atlantic for 30 years that predate and overlap the era of AMOC observations. Our results show no changes in the AMOC for all sections analyzed over the whole Atlantic for the last 30 years. We also find an increased export of freshwater from the South Atlantic associated with an increase in upper salinity.