Exploring the AMOC Connectivity Between the RAPID and OSNAP Lines With a Model‐Based Data Set

Abstract Two major trans‐basin mooring arrays, the Rapid Climate Change‐Meridional Overturning Circulation and Heatflux Array (RAPID) at 26.5°N since 2004 and the Overturning in the Subpolar North Atlantic Program (OSNAP) situated at 53°–60°N since 2014, have been continuously monitoring the Atlanti...

Full description

Bibliographic Details
Published in:Geophysical Research Letters
Main Author: Lei Han
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2023
Subjects:
Atlantic Meridional Overturning Circulation
meridional coherence
RAPID mooring
OSNAP mooring
seasonal variability
Geophysics. Cosmic physics
QC801-809
Labrador Sea
North Atlantic
Online Access:https://doi.org/10.1029/2023GL105225
https://doaj.org/article/d56f0b2d4ef34321b114a90b22387ae7
Description
Summary:Abstract Two major trans‐basin mooring arrays, the Rapid Climate Change‐Meridional Overturning Circulation and Heatflux Array (RAPID) at 26.5°N since 2004 and the Overturning in the Subpolar North Atlantic Program (OSNAP) situated at 53°–60°N since 2014, have been continuously monitoring the Atlantic Meridional Overturning Circulation (AMOC). This study explores the connectivity of AMOC across these two mooring lines from a novel adiabatic perspective utilizing a model‐based data set. The findings unveil significant in‐phase connections facilitated by the adiabatic basinwide redistribution of water between the two lines on a monthly timescale. This adiabatic mode is a possible cause for the observed subpolar AMOC seasonality by OSNAP. Furthermore, the Labrador Sea was identified as a hotspot for adiabatic forcing of the overturning circulations, primarily attributed to its dynamic isopycnal movements.

Similar Items