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26 May 2020 Abnormal Sea Surface Warming and Cooling in the East China Sea during Summer
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Abstract

Park, G.S.; Lee, T.; Min, S.-H.; Jung, S.-K., and Son, Y.B., 2020. Abnormal sea surface warming and cooling in the East China Sea during summer. In: Malvárez, G. and Navas, F. (eds.), Global Coastal Issues of 2020. Journal of Coastal Research, Special Issue No. 95, pp. 1505–1509. Coconut Creek (Florida), ISSN 0749-0208.

To understand changes in sea surface temperature (SST) in the East China Sea (ECS) during summer, we analyzed relationships among SST, air temperature (AT), and heat flux using satellite, model, and in situ data from 2003 to 2019. SST variation was correlated with AT variation (R2 = 0.65). Spatial variation in SST was higher in the northern ECS, and this pattern was controlled by atmospheric forcing. In the southern ECS, changes in SST were less pronounced and were influenced by the branch of the Kuroshio Current (BKC). To analyze abnormal SST warming and cooling events, SST anomalies were used to classify positive and negative periods and to determine years with abnormal changes in SST. Abnormal warming periods were identified in August of 2016 and 2017, and abnormal cooling periods were identified in August of 2011 and 2014. SST was significantly greater in August 2016 relative to the remainder of the study period. An influx of low-salinity water likely contributed to this warming, which was then enhanced by stratification that blocked exchange between the surface and deep water. In August 2017, sea surface warming was likely related to increasing in the BKC. In August 2011, SST was lower than AT due to increased mixing between surface and deep water caused by typhoons. Finally, in the August 2014, SST was higher than AT, likely related to weakening in the East Asian Summer Monsoon (EASM).

©Coastal Education and Research Foundation, Inc. 2020
Gwang Seob Park, TaeHee Lee, Seung-Hwan Min, Seom-Kyu Jung, and Young Baek Son "Abnormal Sea Surface Warming and Cooling in the East China Sea during Summer," Journal of Coastal Research 95(sp1), 1505-1509, (26 May 2020). https://doi.org/10.2112/SI95-290.1
Received: 31 March 2019; Accepted: 13 February 2020; Published: 26 May 2020
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