Coupling of the mid-depth and abyssal components of the global overturning circulation according to a state estimate
Coupling of the mid-depth and abyssal components of the global overturning circulation according to a state estimate
复制标题
根据状态估计耦合全球翻转环流的中深度和深海分量
DOI:
10.1126/sciadv.abf5478
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发表时间:
2021
期刊:
影响因子:
13.6
通讯作者:
Forget, Gael
中科院分区:
文献类型:
--
作者:
Rousselet, Louise;Cessi, Paola;Forget, Gael
Using velocities from a state estimate, Lagrangian analysis maps the global routes of North Atlantic Deep Water (NADW) exiting the Atlantic and reentering the upper branch of the Atlantic Meridional Overturning Circulation (AMOC). Virtual particle trajectories followed for 8100 years highlight an upper route (32%) and a lower route (68%). The latter samples σ2> 37.07 and is further divided into subpolar (20%) and abyssal cells (48%). Particles in the abyssal cell detour into the abyssal North Pacific before upwelling in the Southern Ocean. NADW preferentially upwells north of 33°S (67%). Total diapycnal transformations are largest in the lower route but of comparable magnitudes in the upper route, challenging its previous characterization as “adiabatic.” Typical transit times are 300, 700, and 3600 years for the upper route, subpolar, and abyssal cells, respectively. The AMOC imports salinity into the Atlantic, indicating its potential instability to high-latitude freshwater perturbations.
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影响因子:
3.5
作者:
Ferrari R
通讯作者:
Ferrari R
DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
G. Forget
通讯作者:
G. Forget
影响因子:
3.5
作者:
de Lavergne, Casimir;Madec, Gurvan;Garabato, Alberto C. Naveira
通讯作者:
Garabato, Alberto C. Naveira
影响因子:
18.3
作者:
A. Marzocchi;M. Jansen
通讯作者:
M. Jansen
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
H. Drake;A. Morrison;S. Griffies;J. Sarmiento;W. Weijer;A. Gray
通讯作者:
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