Spatial and temporal variability of sea level rise hot spots over the eastern United States
Spatial and temporal variability of sea level rise hot spots over the eastern United States
复制标题
美国东部海平面上升热点的时空变化
DOI：
10.1002/2017gl073926
复制
发表时间：
2017
影响因子：
5.2
通讯作者：
Jonathan B. Martin
中科院分区：
文献类型：
--
作者：
A. Valle‐Levinson;A. Dutton;Jonathan B. Martin
在过去的几十年里，哈特拉斯角以北的区域海平面上升（SLR）加速通常被归因于大西洋经向翻转环流的减弱，尽管这种因果关系仍然存在争议。与这种模式相反，我们证明SLR在哈特拉斯角以北减速，在开普以南加速至>20 mm/年，是2011年至2015年全球平均值的3倍。验潮仪记录显示，在过去的95年里，在大约1500公里的海岸线上反复发生了类似的短暂、快速的SLR加速（热点），纬度位置可变。我们的分析表明，北大西洋涛动的累积（时间整合）效应决定了这些SLR热点的纬度位置，而累积厄尔尼诺指数与它们的时间相关。这两个海洋-大气过程的叠加解释了十年内海平面振荡时空模式的87%的方差。
Regional sea level rise (SLR) acceleration during the past few decades north of Cape Hatteras has commonly been attributed to weakening Atlantic Meridional Overturning Circulation, although this causal link remains debated. In contrast to this pattern, we demonstrate that SLR decelerated north of Cape Hatteras and accelerated south of the Cape to >20 mm/yr, > 3 times the global mean values from 2011 to 2015. Tide gauge records reveal comparable short‐lived, rapid SLR accelerations (hot spots) that have occurred repeatedly over ~1500 km stretches of the coastline during the past 95 years, with variable latitudinal position. Our analysis indicates that the cumulative (time‐integrated) effects of the North Atlantic Oscillation determine the latitudinal position of these SLR hot spots, while a cumulative El Niño index is associated with their timing. The superposition of these two ocean‐atmospheric processes accounts for 87% of the variance in the spatiotemporal pattern of intradecadal sea level oscillations.
影响因子：
3.7
作者：
Neumann B;Vafeidis AT;Zimmermann J;Nicholls RJ
通讯作者：
Nicholls RJ
影响因子：
5.2
作者：
Bingham, Rory J.;Hughes, Chris W.
通讯作者：
Hughes, Chris W.