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2016년 1월 폭설을 동반한 제주도 한파의 원인 재고찰
한광희,구호영,배효준,김백민,Han, Kwang-Hee,Ku, Ho-Young,Bae, Hyo-Jun,Kim, Baek-Min 한국기상학회 2022 대기 Vol.32 No.3
In Jeju, on January 23, 2016, a cold surge accompanied by heavy snowfall with the most significant amount of 12 cm was the highest record in 32 years. During this period, the temperature of 850 hPa in January was the lowest in 2016. Notably, in 2016, the average surface temperature of January on the Polar cap was the highest since 1991, and 500 hPa geopotential height also showed the highest value. With this condition, the polar vortex in the northern hemisphere meandered and expanded into the subtropics regionally, covering the Korean Peninsula with very high potential vorticity up to 7 Potential Vorticity Unit. As a result, the strong cold advection, mostly driven by a northerly wind, around the Korean Peninsula occurred at over 2𝜎. Previous studies have not addressed this extreme synoptic condition linked to polar vortex expansion due to the unprecedented Arctic warming. We suggest that the occurrence of a strong Ural blocking event after the abrupt warming of the Barents/Karas seas is a major cause of unusually strong cold advection. With a specified mesoscale model simulation with SST (Sea Surface Temperature), we also show that the warmer SST condition near the Korean Peninsula contributed to the heavy snowfall event on Jeju Island.
유료 OTT 서비스 추천 콘텐츠 시청의도의 영향 요인 탐구
이재신(Jae-Shin Lee),김백민(Baek Min Kim) 한국인터넷전자상거래학회 2021 인터넷전자상거래연구 Vol.21 No.1
In this study, the effect of perceived personalization, perceived serendipity, and brand loyalty on the viewing intention of recommended content was examined. We also examined whether the influences of these factors differ depending on the individual’s internal locus of control. A survey was conducted on paid OTT service users. Results show that all three independent variables had significant influences on the intention to view recommended content, supporting all hypotheses. It was also found that the effects of personalization and brand loyalty were moderated by internal locus of control. These results show that the roles of factors influencing the intention to view recommended content differ according to individuals’ psychological characteristics.