Northeast Pacific marine heatwaves associated with high-latitude atmospheric blocking
Abstract The Northeast Pacific Ocean (NEP) is one of the hotspots of marine heatwaves (MHWs) occurring in the global ocean. The causes of MHWs in this region have been widely investigated, but the physical processes underlying heatwaves and regional climate variability remain under debate. By analyz...
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crioppubl:10.1088/1748-9326/ad0e35 2024-06-02T08:15:00+00:00 Northeast Pacific marine heatwaves associated with high-latitude atmospheric blocking Niu, Xingfei Chen, Yihui Le, Chengfeng Natural Science Foundation of Zhejiang Province for Distinguished Young Scholars National Natural Science Foundation of China National Key Research and Development Program of China 2023 http://dx.doi.org/10.1088/1748-9326/ad0e35 https://iopscience.iop.org/article/10.1088/1748-9326/ad0e35 https://iopscience.iop.org/article/10.1088/1748-9326/ad0e35/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 19, issue 1, page 014025 ISSN 1748-9326 journal-article 2023 crioppubl https://doi.org/10.1088/1748-9326/ad0e35 2024-05-07T13:57:45Z Abstract The Northeast Pacific Ocean (NEP) is one of the hotspots of marine heatwaves (MHWs) occurring in the global ocean. The causes of MHWs in this region have been widely investigated, but the physical processes underlying heatwaves and regional climate variability remain under debate. By analyzing interannual large-scale high-latitude atmospheric dynamics and oceanic physical conditions over the NEP, we show that winter-spring sea surface temperature (SST) anomalies are strongly correlated with winter-spring atmospheric blocking events over Alaska. The occurrence of weaker westerly wind over the subarctic region over the NEP during the period of the blocking, accompanies a shallower vertical mixed layer, less southward horizontal Ekman transport, and higher SST in the upper NEP. These findings establish a linkage between high-latitude atmospheric dynamics and subarctic oceanic conditions and reveal the physical mechanisms of this connection, providing new insight into the possible causes of MHW in the NEP. Article in Journal/Newspaper Subarctic Alaska IOP Publishing Pacific Environmental Research Letters |
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Abstract The Northeast Pacific Ocean (NEP) is one of the hotspots of marine heatwaves (MHWs) occurring in the global ocean. The causes of MHWs in this region have been widely investigated, but the physical processes underlying heatwaves and regional climate variability remain under debate. By analyzing interannual large-scale high-latitude atmospheric dynamics and oceanic physical conditions over the NEP, we show that winter-spring sea surface temperature (SST) anomalies are strongly correlated with winter-spring atmospheric blocking events over Alaska. The occurrence of weaker westerly wind over the subarctic region over the NEP during the period of the blocking, accompanies a shallower vertical mixed layer, less southward horizontal Ekman transport, and higher SST in the upper NEP. These findings establish a linkage between high-latitude atmospheric dynamics and subarctic oceanic conditions and reveal the physical mechanisms of this connection, providing new insight into the possible causes of MHW in the NEP. |
author2 |
Natural Science Foundation of Zhejiang Province for Distinguished Young Scholars National Natural Science Foundation of China National Key Research and Development Program of China |
format |
Article in Journal/Newspaper |
author |
Niu, Xingfei Chen, Yihui Le, Chengfeng |
spellingShingle |
Niu, Xingfei Chen, Yihui Le, Chengfeng Northeast Pacific marine heatwaves associated with high-latitude atmospheric blocking |
author_facet |
Niu, Xingfei Chen, Yihui Le, Chengfeng |
author_sort |
Niu, Xingfei |
title |
Northeast Pacific marine heatwaves associated with high-latitude atmospheric blocking |
title_short |
Northeast Pacific marine heatwaves associated with high-latitude atmospheric blocking |
title_full |
Northeast Pacific marine heatwaves associated with high-latitude atmospheric blocking |
title_fullStr |
Northeast Pacific marine heatwaves associated with high-latitude atmospheric blocking |
title_full_unstemmed |
Northeast Pacific marine heatwaves associated with high-latitude atmospheric blocking |
title_sort |
northeast pacific marine heatwaves associated with high-latitude atmospheric blocking |
publisher |
IOP Publishing |
publishDate |
2023 |
url |
http://dx.doi.org/10.1088/1748-9326/ad0e35 https://iopscience.iop.org/article/10.1088/1748-9326/ad0e35 https://iopscience.iop.org/article/10.1088/1748-9326/ad0e35/pdf |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Subarctic Alaska |
genre_facet |
Subarctic Alaska |
op_source |
Environmental Research Letters volume 19, issue 1, page 014025 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/ad0e35 |
container_title |
Environmental Research Letters |
_version_ |
1800739046197035008 |