Meridional Connectivity of a 25-Year Observational AMOC Record at 47°N
Since climate model studies project a decline of the Atlantic Meridional Overturning Circulation (AMOC) in the 21st century, monitoring AMOC changes remains essential. While AMOC variability is expected to be coherent across latitudes on longer than decadal timescales, connectivity on inter-annual a...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Geophysical Research Letters
2023
|
Subjects: | |
Online Access: | https://doi.org/10.1029/2023GL103284 |
id |
ftzenodo:oai:zenodo.org:10674554 |
---|---|
record_format |
openpolar |
spelling |
ftzenodo:oai:zenodo.org:10674554 2024-09-15T18:23:15+00:00 Meridional Connectivity of a 25-Year Observational AMOC Record at 47°N Wett, Simon Rhein, Monika Kieke, Dagmar Mertens, Christian Moritz, Martin 2023-08-25 https://doi.org/10.1029/2023GL103284 eng eng Geophysical Research Letters https://zenodo.org/communities/epoc https://doi.org/10.1029/2023GL103284 oai:zenodo.org:10674554 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Geophysical Research Letters, 50, (2023-08-25) Atlantic Meridional Overturning Circulation AMOC 47°N EPOC info:eu-repo/semantics/article 2023 ftzenodo https://doi.org/10.1029/2023GL103284 2024-07-25T16:02:07Z Since climate model studies project a decline of the Atlantic Meridional Overturning Circulation (AMOC) in the 21st century, monitoring AMOC changes remains essential. While AMOC variability is expected to be coherent across latitudes on longer than decadal timescales, connectivity on inter-annual and seasonal timescales is less clear. Model studies and observational estimates disagree on the regions and timescales of meridional connectivity and AMOC observations at multiple latitudes are needed to study its connectivity. We calculate basin-wide AMOC volume transports (1993–2018) from measurements of the North Atlantic Changes (NOAC) array at 47°N, combining data from moored instruments with hydrography and satellite altimetry. The mean NOAC AMOC is 17.2 Sv exhibiting no long-term trend. Both the unfiltered and low-pass filtered NOAC AMOC show a significant correlation with the RAPID-MOCHA-WBTS AMOC at 26°N when the NOAC AMOC leads by about one year. Article in Journal/Newspaper North Atlantic Zenodo Geophysical Research Letters 50 16 |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
English |
topic |
Atlantic Meridional Overturning Circulation AMOC 47°N EPOC |
spellingShingle |
Atlantic Meridional Overturning Circulation AMOC 47°N EPOC Wett, Simon Rhein, Monika Kieke, Dagmar Mertens, Christian Moritz, Martin Meridional Connectivity of a 25-Year Observational AMOC Record at 47°N |
topic_facet |
Atlantic Meridional Overturning Circulation AMOC 47°N EPOC |
description |
Since climate model studies project a decline of the Atlantic Meridional Overturning Circulation (AMOC) in the 21st century, monitoring AMOC changes remains essential. While AMOC variability is expected to be coherent across latitudes on longer than decadal timescales, connectivity on inter-annual and seasonal timescales is less clear. Model studies and observational estimates disagree on the regions and timescales of meridional connectivity and AMOC observations at multiple latitudes are needed to study its connectivity. We calculate basin-wide AMOC volume transports (1993–2018) from measurements of the North Atlantic Changes (NOAC) array at 47°N, combining data from moored instruments with hydrography and satellite altimetry. The mean NOAC AMOC is 17.2 Sv exhibiting no long-term trend. Both the unfiltered and low-pass filtered NOAC AMOC show a significant correlation with the RAPID-MOCHA-WBTS AMOC at 26°N when the NOAC AMOC leads by about one year. |
format |
Article in Journal/Newspaper |
author |
Wett, Simon Rhein, Monika Kieke, Dagmar Mertens, Christian Moritz, Martin |
author_facet |
Wett, Simon Rhein, Monika Kieke, Dagmar Mertens, Christian Moritz, Martin |
author_sort |
Wett, Simon |
title |
Meridional Connectivity of a 25-Year Observational AMOC Record at 47°N |
title_short |
Meridional Connectivity of a 25-Year Observational AMOC Record at 47°N |
title_full |
Meridional Connectivity of a 25-Year Observational AMOC Record at 47°N |
title_fullStr |
Meridional Connectivity of a 25-Year Observational AMOC Record at 47°N |
title_full_unstemmed |
Meridional Connectivity of a 25-Year Observational AMOC Record at 47°N |
title_sort |
meridional connectivity of a 25-year observational amoc record at 47°n |
publisher |
Geophysical Research Letters |
publishDate |
2023 |
url |
https://doi.org/10.1029/2023GL103284 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Geophysical Research Letters, 50, (2023-08-25) |
op_relation |
https://zenodo.org/communities/epoc https://doi.org/10.1029/2023GL103284 oai:zenodo.org:10674554 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.1029/2023GL103284 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
16 |
_version_ |
1810463420033531904 |