Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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Assessment of Surface Temperature Mitigation Effects of Wetlands During Heat and Cold Waves Using Daytime and Nighttime MODIS Land Surface Temperature

Terra/Aqua MODIS LST를 이용한 폭염 및 한파기간 동안 습지의 지면온도 완화효과 분석

  • Chung, Jeehun (Department of Civil, Environmental and Plant Engineering, Konkuk University) ;
  • Lee, Yonggwan (Department of Civil, Environmental and Plant Engineering, Konkuk University) ;
  • Kim, Seongjoon (School of Civil and Environmental Engineering, Konkuk University)
  • 정지훈 (건국대학교 대학원 사회환경플랜트공학과) ;
  • 이용관 (건국대학교 대학원 사회환경플랜트공학과) ;
  • 김성준 (건국대학교 공과대학 사회환경공학부)
  • Received : 2019.10.10
  • Accepted : 2019.12.03
  • Published : 2019.12.30
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Abstract

This study analyzed the surface temperature mitigation effect of wetlands during cold waves (below -12℃ from January to February) and heat waves (above 33℃ from July to August) in 2018. We used Terra/Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) Daytime and Nighttime Land Surface Temperature (LST) product, and the maximum and minimum air temperature observed at 86 stations of Korea Meteorological Administration (KMA). For the cold wave analysis, the LST of Terra MODIS nighttime was the highest at forest area with -12.7℃, followed by upland crop and wetland areas of -12.9℃ and -13.0℃ respectively. The urban area showed the lowest value of -14.4℃. During the heat wave, the urban area was the highest with + 34.6℃ in Aqua MODIS LST daytime. The wetland area was + 33.0℃ showing - 1.6℃ decrease comparing with urban area.

본 연구는 2018년에 발생한 폭염 및 한파 발생 기간을 대상으로 습지의 지면온도 완화효과를 평가하기 위해 위성관측 지표면 온도(Land Surface Temperature, LST)와 지상 관측 기온 자료를 활용해 토지 이용별 특성 분석을 실시하였다. 폭염 기간에는 폭염주의보 발령 기준인 최고기온 33℃ 이상인 지역, 한파 기간은 한파주의보 발령 기준인 최저기온 -12℃ 이하의 지역을 대상으로 하였다. 위성 자료로는 Terra/Aqua Moderate Resolution Imaging Spectroradiometer (MODIS)의 Daytime, Nighttime LST 자료, 지상 관측 기온 자료로는 전국 86개소의 종관기상관측장비(Automated Surface Observing System, ASOS) 지점에 대한 최고 및 최저 자료를 수집하여 데이터베이스를 구축하였다. 분석 결과, 한파 기간을 대상으로 하였을 때 산림의 지면온도의 평균이 -12.7℃로 가장 높았으며, 그 뒤로 밭과 습지가 각각 -12.9℃와 -13.0℃로 나타나 평균이 가장 낮은 도시의 -14.4℃에 비해 1.4℃ 더 높았다. 폭염 기간에도 도시지역의 평균이 34.6℃로 가장 높았고 습지는 33.0℃로 도시지역과 - 1.6℃의 차이를 보여 습지의 지면온도 완화효과를 확인하였다. 습지는 기간에 따라 차이는 있으나 지면온도의 완화 기능을 발휘하였고, 원격탐사 영상을 이용한 확인이 가능하였다.

Keywords

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