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Spatio-temporal Patterns and Long-term Trends of Apparent Temperature in Jeju Island, Korea

  • Journal of the Association of Korean Geographers
  • Abbr : JAKG
  • 2018, 7(1), pp.29-41
  • DOI : 10.25202/JAKG.7.1.3
  • Publisher : Association of Korean Geographers
  • Research Area : Social Science > Geography
  • Received : March 30, 2018
  • Accepted : April 11, 2018

Gwangyong Choi 1

1제주대학교 지리교육전공

Accredited

ABSTRACT

In the present study, spatio-temporal patterns of seasonal apparent temperatures in Jeju Island, Korea and their associations with East Asian monsoon systems as well as their long-term changes were examined. To do this, daily apparent data sets consisting of heat index, windchill index and universal apparent temperature were reconstructed from long-term climate data sets archived by the Korea Meteorological Administration. According to the long-term (1988∼2017) average annual time-series data, the apparent temperature is lower than air the temperature due to the wind chill effect by the affluent wind of Jeju Island in the seasons other than the summer. In mid-wintertime, the climatological average of apparent temperature is lower than the temperature by 2.3∼5.8°C. The apparent temperature in winter in Jeju Island shows a significant negative correlation with the intensity of Siberia high pressure index. On the other hand, the climatological average of the apparent temperature in mid-summer becomes higher up to 3.6∼4.6°C than air temperature due to the inflow of moisture by summer monsoon. Long-term time series data show that the apparent temperature increase in Jeju Island has progressed faster than the air temperature rise trend. Overall, these results indicate that there is a need to constantly monitor the summer apparent temperature in order to protect a large number of Jeju tourists from the heat waves of disaster level that can occur in the warmer 21st century.

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