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Sea level extremes and compounding marine heatwaves in coastal Indonesia

Low-lying island nations like Indonesia are vulnerable to sea level Height EXtremes (HEXs). When compounded by marine heatwaves, HEXs have larger ecological and societal impact. Here we combine observations with model simulations, to investigate the HEXs and Compound Height-Heat Extremes (CHHEXs) al...

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Autores principales: Han, Weiqing, Zhang, Lei, Meehl, Gerald A., Kido, Shoichiro, Tozuka, Tomoki, Li, Yuanlong, McPhaden, Michael J., Hu, Aixue, Cazenave, Anny, Rosenbloom, Nan, Strand, Gary, West, B. Jason, Xing, Wen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9613989/
https://www.ncbi.nlm.nih.gov/pubmed/36302781
http://dx.doi.org/10.1038/s41467-022-34003-3
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author Han, Weiqing
Zhang, Lei
Meehl, Gerald A.
Kido, Shoichiro
Tozuka, Tomoki
Li, Yuanlong
McPhaden, Michael J.
Hu, Aixue
Cazenave, Anny
Rosenbloom, Nan
Strand, Gary
West, B. Jason
Xing, Wen
author_facet Han, Weiqing
Zhang, Lei
Meehl, Gerald A.
Kido, Shoichiro
Tozuka, Tomoki
Li, Yuanlong
McPhaden, Michael J.
Hu, Aixue
Cazenave, Anny
Rosenbloom, Nan
Strand, Gary
West, B. Jason
Xing, Wen
author_sort Han, Weiqing
collection PubMed
description Low-lying island nations like Indonesia are vulnerable to sea level Height EXtremes (HEXs). When compounded by marine heatwaves, HEXs have larger ecological and societal impact. Here we combine observations with model simulations, to investigate the HEXs and Compound Height-Heat Extremes (CHHEXs) along the Indian Ocean coast of Indonesia in recent decades. We find that anthropogenic sea level rise combined with decadal climate variability causes increased occurrence of HEXs during 2010–2017. Both HEXs and CHHEXs are driven by equatorial westerly and longshore northwesterly wind anomalies. For most HEXs, which occur during December-March, downwelling favorable northwest monsoon winds are enhanced but enhanced vertical mixing limits surface warming. For most CHHEXs, wind anomalies associated with a negative Indian Ocean Dipole (IOD) and co-occurring La Niña weaken the southeasterlies and cooling from coastal upwelling during May-June and November-December. Our findings emphasize the important interplay between anthropogenic warming and climate variability in affecting regional extremes.
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spelling pubmed-96139892022-10-29 Sea level extremes and compounding marine heatwaves in coastal Indonesia Han, Weiqing Zhang, Lei Meehl, Gerald A. Kido, Shoichiro Tozuka, Tomoki Li, Yuanlong McPhaden, Michael J. Hu, Aixue Cazenave, Anny Rosenbloom, Nan Strand, Gary West, B. Jason Xing, Wen Nat Commun Article Low-lying island nations like Indonesia are vulnerable to sea level Height EXtremes (HEXs). When compounded by marine heatwaves, HEXs have larger ecological and societal impact. Here we combine observations with model simulations, to investigate the HEXs and Compound Height-Heat Extremes (CHHEXs) along the Indian Ocean coast of Indonesia in recent decades. We find that anthropogenic sea level rise combined with decadal climate variability causes increased occurrence of HEXs during 2010–2017. Both HEXs and CHHEXs are driven by equatorial westerly and longshore northwesterly wind anomalies. For most HEXs, which occur during December-March, downwelling favorable northwest monsoon winds are enhanced but enhanced vertical mixing limits surface warming. For most CHHEXs, wind anomalies associated with a negative Indian Ocean Dipole (IOD) and co-occurring La Niña weaken the southeasterlies and cooling from coastal upwelling during May-June and November-December. Our findings emphasize the important interplay between anthropogenic warming and climate variability in affecting regional extremes. Nature Publishing Group UK 2022-10-27 /pmc/articles/PMC9613989/ /pubmed/36302781 http://dx.doi.org/10.1038/s41467-022-34003-3 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Han, Weiqing
Zhang, Lei
Meehl, Gerald A.
Kido, Shoichiro
Tozuka, Tomoki
Li, Yuanlong
McPhaden, Michael J.
Hu, Aixue
Cazenave, Anny
Rosenbloom, Nan
Strand, Gary
West, B. Jason
Xing, Wen
Sea level extremes and compounding marine heatwaves in coastal Indonesia
title Sea level extremes and compounding marine heatwaves in coastal Indonesia
title_full Sea level extremes and compounding marine heatwaves in coastal Indonesia
title_fullStr Sea level extremes and compounding marine heatwaves in coastal Indonesia
title_full_unstemmed Sea level extremes and compounding marine heatwaves in coastal Indonesia
title_short Sea level extremes and compounding marine heatwaves in coastal Indonesia
title_sort sea level extremes and compounding marine heatwaves in coastal indonesia
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9613989/
https://www.ncbi.nlm.nih.gov/pubmed/36302781
http://dx.doi.org/10.1038/s41467-022-34003-3
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