Decadal variation of temperature inversions along Line P
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Hydrographic data measured for 50 years along Line P between the North American west coast and mid Gulf of Alaska as well as data from profiling float observations were analyzed to study the formation and variation of temperature inversions in the eastern subarctic North Pacific. Remarkable decadal to inter-decadal variation was observed in the magnitude of temperature inversions. This variation was mostly attributed to the variation of southward Ekman transport, eastward geostrophic transport, and surface cooling.
KeywordsTemperature inversion Line P Gulf of Alaska
The author would like to thank W. Crawford for his helpful comments and fruitful discussions. The author would also like to thank S. Okkonen and two anonymous reviewers for their helpful comments. We used ocean data along Line P archived by Fisheries and Oceans Canada at the Institute of Ocean Sciences (http://www.pac.dfo-mpo.gc.ca/science/oceans/data-donnees/line-p/index-eng.htm). Line P is managed and maintained by staff who work for Fisheries and Oceans Canada at the Institute of Ocean Sciences. The author thanks them for their efforts. The Argo float data used in this study were collected and made freely available by the International Argo Project and the national programs that contribute to it (http://www.argo.ucsd.edu; http://argo.jcommops.org). Argo is a pilot program of the Global Ocean Observing System. The author thanks S. Matsunaga for his support.
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