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

2023/09/29 by Lei Han · 1 voice
Earth and Planetary Sciences · #Oceanographic and Atmospheric Processes #Geology and Paleoclimatology Research #Marine and coastal ecosystems

paper · pdf · doi:10.1029/2023gl105225

openalex publication_date 2023/09/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

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.

Citations

• Seasonal Overturning of the Labrador Sea as Observed by Argo Floats

Discussions

• Some AMOC data (OSNAP line - 53°–60°N North Atlantic) Subtropical and subpolar AMOC seem to be connected doi.org/10.1029/2023... [bsky, 1 points, 6 comments]

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