A research team, formed by scientists from the APEC Climate Center (APCC) and Pusan National University (PNU), wrote a research paper entitled “Human-Perceived Temperature Change in South Korea and Their Association with Atmospheric Circulation Patterns”. The research paper, published in the Journal of Climate, recently attracted public attention and media.
The research team investigated the spatiotemporal characteristics of human-perceived temperature (HPT) data, which describe the joint effects of temperature and humidity on the human body, and examined the related large-scale atmospheric circulation patterns for the summer season (July–August) in South Korea using trend and composite analyses.
The increasing trend of HPT was stronger than that of the maximum, mean, and minimum temperatures during 1981–2018. There was an abrupt change in HPT between 1981–2009 and 2010–18, which is likely caused by the northward upper-level subtropical jet, strengthened downward motion, anomalous anticyclones around South Korea, and increased sea surface temperature over the western North Pacific Ocean, which are related to the enhancement and western expansion of the western North Pacific subtropical high (WNPSH).
Dr. Hyun-Ju Lee from APCC, the lead author of the paper, stated that monitoring and predicting the location of WNPSH, as well as understanding the mechanism and factors that are influencing the movement of WNPSH under global warming, are necessary for predicting and coping with extreme HPT.