Salient difference of sea surface temperature over the North Atlantic in the spring following three super El Niño events
Abstract Despite similar evolution of Niño3.4 index for three strong El Niño events in the tropical Pacific in 1982–1983, 1997–1998 and 2015–2016, divergent sea surface temperature anomalies (SSTAs) were observed in the North Atlantic (NA) in spring following El Niño peak. Strong teleconnection occu...
Published in: | Environmental Research Letters |
---|---|
Main Authors: | , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
IOP Publishing
2020
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1088/1748-9326/aba20a https://iopscience.iop.org/article/10.1088/1748-9326/aba20a https://iopscience.iop.org/article/10.1088/1748-9326/aba20a/pdf |
id |
crioppubl:10.1088/1748-9326/aba20a |
---|---|
record_format |
openpolar |
spelling |
crioppubl:10.1088/1748-9326/aba20a 2024-06-02T08:11:08+00:00 Salient difference of sea surface temperature over the North Atlantic in the spring following three super El Niño events Yu, Jinhua Zhang, Xuyu Li, Laurent Shi, Chunhua Ye, Yangbo National Natural Science Foundation of China 2020 http://dx.doi.org/10.1088/1748-9326/aba20a https://iopscience.iop.org/article/10.1088/1748-9326/aba20a https://iopscience.iop.org/article/10.1088/1748-9326/aba20a/pdf unknown IOP Publishing http://creativecommons.org/licenses/by/4.0 https://iopscience.iop.org/info/page/text-and-data-mining Environmental Research Letters volume 15, issue 9, page 094040 ISSN 1748-9326 journal-article 2020 crioppubl https://doi.org/10.1088/1748-9326/aba20a 2024-05-07T14:00:10Z Abstract Despite similar evolution of Niño3.4 index for three strong El Niño events in the tropical Pacific in 1982–1983, 1997–1998 and 2015–2016, divergent sea surface temperature anomalies (SSTAs) were observed in the North Atlantic (NA) in spring following El Niño peak. Strong teleconnection occurred for the first two events in 1982–1983 and 1997–1998, leading to a negative phase of a North Atlantic Oscillation-like circulation over the extratropical NA, and thus a positive tripolar SSTA pattern in the NA. But the teleconnection was weak for the case of 2015–2016 El Niño, the SSTA in spring 2016 in NA being mainly created and maintained by the preconditioning of the NA basin and local atmosphere-ocean interactions. The salient difference among the three events resides in their ways to operate the teleconnection linking the central-eastern equatorial Pacific and the subtropical eastern North Pacific to the extratropical NA, which would be a key to explain the different impacts of the three exceptional El Niño events. It is furthermore shown that the reduced anomalous westerlies over Central America along 30° N around the peak time of 2015–2016 El Niño play a role of inhibition for an efficient Rossby wave energy propagation from the tropics, eastward into the Gulf of Mexico and northward into midlatitudes in the western NA. Article in Journal/Newspaper North Atlantic North Atlantic oscillation IOP Publishing Pacific Environmental Research Letters 15 9 094040 |
institution |
Open Polar |
collection |
IOP Publishing |
op_collection_id |
crioppubl |
language |
unknown |
description |
Abstract Despite similar evolution of Niño3.4 index for three strong El Niño events in the tropical Pacific in 1982–1983, 1997–1998 and 2015–2016, divergent sea surface temperature anomalies (SSTAs) were observed in the North Atlantic (NA) in spring following El Niño peak. Strong teleconnection occurred for the first two events in 1982–1983 and 1997–1998, leading to a negative phase of a North Atlantic Oscillation-like circulation over the extratropical NA, and thus a positive tripolar SSTA pattern in the NA. But the teleconnection was weak for the case of 2015–2016 El Niño, the SSTA in spring 2016 in NA being mainly created and maintained by the preconditioning of the NA basin and local atmosphere-ocean interactions. The salient difference among the three events resides in their ways to operate the teleconnection linking the central-eastern equatorial Pacific and the subtropical eastern North Pacific to the extratropical NA, which would be a key to explain the different impacts of the three exceptional El Niño events. It is furthermore shown that the reduced anomalous westerlies over Central America along 30° N around the peak time of 2015–2016 El Niño play a role of inhibition for an efficient Rossby wave energy propagation from the tropics, eastward into the Gulf of Mexico and northward into midlatitudes in the western NA. |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Yu, Jinhua Zhang, Xuyu Li, Laurent Shi, Chunhua Ye, Yangbo |
spellingShingle |
Yu, Jinhua Zhang, Xuyu Li, Laurent Shi, Chunhua Ye, Yangbo Salient difference of sea surface temperature over the North Atlantic in the spring following three super El Niño events |
author_facet |
Yu, Jinhua Zhang, Xuyu Li, Laurent Shi, Chunhua Ye, Yangbo |
author_sort |
Yu, Jinhua |
title |
Salient difference of sea surface temperature over the North Atlantic in the spring following three super El Niño events |
title_short |
Salient difference of sea surface temperature over the North Atlantic in the spring following three super El Niño events |
title_full |
Salient difference of sea surface temperature over the North Atlantic in the spring following three super El Niño events |
title_fullStr |
Salient difference of sea surface temperature over the North Atlantic in the spring following three super El Niño events |
title_full_unstemmed |
Salient difference of sea surface temperature over the North Atlantic in the spring following three super El Niño events |
title_sort |
salient difference of sea surface temperature over the north atlantic in the spring following three super el niño events |
publisher |
IOP Publishing |
publishDate |
2020 |
url |
http://dx.doi.org/10.1088/1748-9326/aba20a https://iopscience.iop.org/article/10.1088/1748-9326/aba20a https://iopscience.iop.org/article/10.1088/1748-9326/aba20a/pdf |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Environmental Research Letters volume 15, issue 9, page 094040 ISSN 1748-9326 |
op_rights |
http://creativecommons.org/licenses/by/4.0 https://iopscience.iop.org/info/page/text-and-data-mining |
op_doi |
https://doi.org/10.1088/1748-9326/aba20a |
container_title |
Environmental Research Letters |
container_volume |
15 |
container_issue |
9 |
container_start_page |
094040 |
_version_ |
1800757179525890048 |