Enhanced Atlantic freshwater export during El Niño
Using two reanalysis data sets, the influence of El Niño/Southern Oscillation (ENSO) on the surface freshwater balance of the Atlantic ocean is examined. We present evidence that the transport of water vapour out of the tropical Atlantic is enhanced during warm ENSO phases, while it is reduced durin...
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ftunivbern:oai:boris.unibe.ch:158797 2023-08-20T04:08:20+02:00 Enhanced Atlantic freshwater export during El Niño Schmittner, Andreas Appenzeller, Christof Stocker, Thomas F. 2000 application/pdf https://boris.unibe.ch/158797/1/schmittner00grl.pdf https://boris.unibe.ch/158797/ eng eng American Geophysical Union https://boris.unibe.ch/158797/ info:eu-repo/semantics/openAccess Schmittner, Andreas; Appenzeller, Christof; Stocker, Thomas F. (2000). Enhanced Atlantic freshwater export during El Niño. Geophysical Research Letters, 27(8), pp. 1163-1166. American Geophysical Union 10.1029/1999GL011048 <http://dx.doi.org/10.1029/1999GL011048> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2000 ftunivbern https://doi.org/10.1029/1999GL011048 2023-07-31T22:08:19Z Using two reanalysis data sets, the influence of El Niño/Southern Oscillation (ENSO) on the surface freshwater balance of the Atlantic ocean is examined. We present evidence that the transport of water vapour out of the tropical Atlantic is enhanced during warm ENSO phases, while it is reduced during cold phases. These tropical changes alter the freshwater budget of the entire Atlantic drainage basin. The difference in freshwater export between La Niña and El Niño years is on the order of 0.1 Sv (1Sv=106 m³s−1) for the entire Atlantic. Results from an idealized coupled ocean-atmosphere model suggest that this amplitude is of significance for the strength of the North Atlantic thermohaline ocean circulation, if the persistence of the anomaly is on the order of decades. Article in Journal/Newspaper North Atlantic BORIS (Bern Open Repository and Information System, University of Bern) Geophysical Research Letters 27 8 1163 1166 |
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Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Schmittner, Andreas Appenzeller, Christof Stocker, Thomas F. Enhanced Atlantic freshwater export during El Niño |
topic_facet |
530 Physics |
description |
Using two reanalysis data sets, the influence of El Niño/Southern Oscillation (ENSO) on the surface freshwater balance of the Atlantic ocean is examined. We present evidence that the transport of water vapour out of the tropical Atlantic is enhanced during warm ENSO phases, while it is reduced during cold phases. These tropical changes alter the freshwater budget of the entire Atlantic drainage basin. The difference in freshwater export between La Niña and El Niño years is on the order of 0.1 Sv (1Sv=106 m³s−1) for the entire Atlantic. Results from an idealized coupled ocean-atmosphere model suggest that this amplitude is of significance for the strength of the North Atlantic thermohaline ocean circulation, if the persistence of the anomaly is on the order of decades. |
format |
Article in Journal/Newspaper |
author |
Schmittner, Andreas Appenzeller, Christof Stocker, Thomas F. |
author_facet |
Schmittner, Andreas Appenzeller, Christof Stocker, Thomas F. |
author_sort |
Schmittner, Andreas |
title |
Enhanced Atlantic freshwater export during El Niño |
title_short |
Enhanced Atlantic freshwater export during El Niño |
title_full |
Enhanced Atlantic freshwater export during El Niño |
title_fullStr |
Enhanced Atlantic freshwater export during El Niño |
title_full_unstemmed |
Enhanced Atlantic freshwater export during El Niño |
title_sort |
enhanced atlantic freshwater export during el niño |
publisher |
American Geophysical Union |
publishDate |
2000 |
url |
https://boris.unibe.ch/158797/1/schmittner00grl.pdf https://boris.unibe.ch/158797/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Schmittner, Andreas; Appenzeller, Christof; Stocker, Thomas F. (2000). Enhanced Atlantic freshwater export during El Niño. Geophysical Research Letters, 27(8), pp. 1163-1166. American Geophysical Union 10.1029/1999GL011048 <http://dx.doi.org/10.1029/1999GL011048> |
op_relation |
https://boris.unibe.ch/158797/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/1999GL011048 |
container_title |
Geophysical Research Letters |
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27 |
container_issue |
8 |
container_start_page |
1163 |
op_container_end_page |
1166 |
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1774720525496483840 |