Record-low coastal sea levels in the Northeast Pacific during the winter of 2013-2014
AffiliationUniv Arizona, Dept Geosci
MetadataShow full item record
PublisherNATURE PUBLISHING GROUP
CitationWang, Y., Liu, H., Lin, P., & Yin, J. (2019). Record-low coastal sea levels in the Northeast Pacific during the winter of 2013–2014. Scientific reports, 9(1), 3774.
Rights© The Author(s) 2019. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License.
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AbstractDuring the winter of 2013-2014, the averaged tide gauge (TG) coastal sea level (CSL) anomaly north of 40 degrees N was a record low of -107 mm for the period of 1948-2016. Statistical analysis indicates that this large drop was a once-in-a-century event and closely related to an unusual ocean warming event known as "The Blob". The Blob developed in the NE Pacific during the winter of 2013-2014. Both the Blob and record-low CSL can be attributed to wind changes associated with an unusually high sea level pressure (SLP) pattern over the NE Pacific. The anomalous local longshore winds induced by the positive SLP anomalies caused strong offshore Ekman transport along the coast of NE Pacific, thereby leading to the record-low CSL. In addition, the steric sea level changes also contributed a significant part (17%) to the record-low CSL. The Pacific Decadal Oscillation (PDO), as the primary variability mode in the NE Pacific on decadal time scales, did not contribute to the emergence of this extreme CSL event.
NoteOpen access journal.
VersionFinal published version
SponsorsNational Key R&D Program for Developing Basic Sciences [2016YFC1401401, 2016YFC1401601]; National Natural Science Foundation of China [41576025, 41776030, 41576026]
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