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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2000
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ftdatacite:10.48350/158797 2023-05-15T17:31:52+02:00 Enhanced Atlantic freshwater export during El Niño Schmittner, Andreas Appenzeller, Christof Stocker, Thomas F. 2000 https://dx.doi.org/10.48350/158797 https://boris.unibe.ch/158797/ unknown American Geophysical Union open access publisher holds copyright http://purl.org/coar/access_right/c_abf2 530 Physics Text article-journal journal article ScholarlyArticle 2000 ftdatacite https://doi.org/10.48350/158797 2021-11-05T12:55:41Z 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. Text North Atlantic DataCite Metadata Store (German National Library of Science and Technology) |
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530 Physics |
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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 |
Text |
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://dx.doi.org/10.48350/158797 https://boris.unibe.ch/158797/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_rights |
open access publisher holds copyright http://purl.org/coar/access_right/c_abf2 |
op_doi |
https://doi.org/10.48350/158797 |
_version_ |
1766129671823425536 |