한국지리정보학회지 (Journal of the Korean Association of Geographic Information Studies)

  • 제26권4호
  • /
  • Pages.145-160
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  • 2023
  • /
  • 1226-9719(pISSN)
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  • 2287-6952(eISSN)
한국지리정보학회 (The Korean Association of Geographic Information Studies)
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UAV 영상과 ENVI-met 활용 물리적 환경과 열적 환경 비교

Comparing Physical and Thermal Environments Using UAV Imagery and ENVI-met

  • 김성현 (창원대학교 스마트환경에너지공학과정) ;
  • 박경훈 (창원대학교 스마트그린공학부) ;
  • 송봉근 (창원대학교 산업기술연구원)
  • Seounghyeon KIM (Dept. of Smart Ocean Environmental Energy, Changwon National University) ;
  • Kyunghun PARK (School of Smart Green Engineering, Changwon National University) ;
  • Bonggeun SONG (Institute of Industrial Technology, Changwon National University)
  • 투고 : 2023.11.02
  • 심사 : 2023.11.29
  • 발행 : 2023.12.31
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초록

본 연구는 무인항공기(Unmanned Aerial Vehicles, UAV) 기반 물리적 환경인 Normalized Difference Vegetation Index(NDVI), Sky View Factor(SVF)와 ENVI-met 모델링을 활용하여 시간대별 열적 환경을 비교 분석하는 것을 목적으로 수행하였다. 연구 결과 NDVI, SVF는 열적 환경 요소인 Upward short-wavelength(S↑), Downward short-wavelength(S↓), Upward long-wavelength(L↑), Downward long-wavelength(L↓), Land Surface Temperature (LST), Mean Radiant Temperature(Tmrt)와 유의수준 1% 이내에서 모두 상관관계를 보이는 것으로 도출되었다. 특히, NDVI는 S↑와 12시에 최대 -0.52**의 상관관계를 가지는 것으로 분석되었고, L↓와 모든 시간대에서 0.53** 이상의 상관성을 보였다. LST와는 -0.61**(13시)의 상관성을 보여 NDVI는 장파 복사에너지의 관련성이 높은 것으로 판단된다. SVF의 경우 SVF 범위에 따라 장파 복사에너지와의 관련성이 높은 것으로 도출되었다. 본 연구결과는 공간의 열적 쾌적성과 미기후를 평가하기 위한 통합 접근 방식을 제공할 수 있으며, 도시 디자인 및 경관 특성이 보행자의 열 쾌적성 미치는 영향 관계 규명 등에 활용될 수 있을 것으로 판단된다.

The purpose of this study was to compare and analyze diurnal thermal environments using Unmanned Aerial Vehicles(UAV)-derived physical parameters(NDVI, SVF) and ENVI-met modeling. The research findings revealed significant correlations, with a significance level of 1%, between UAV-derived NDVI, SVF, and thermal environment elements such as S↑, S↓, L↓, L↑, Land Surface Temperature(LST), and Tmrt. In particular, NDVI showed a strong negative correlation with S↑, reaching a minimum of -0.52** at 12:00, and exhibited a positive correlation of 0.53** or higher with L↓ at all times. A significant negative correlation of -0.61** with LST was observed at 13:00, suggesting the high relevance of NDVI to long-wavelength radiation. Regarding SVF, the results showed a strong relationship with long-wave radiative flux, depending on the SVF range. These research findings offer an integrated approach to evaluating thermal comfort and microclimates in urban areas. Furthermore, they can be applied to understand the impact of urban design and landscape characteristics on pedestrian thermal comfort.

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과제정보

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구입니다(No. NRF-2022R1C1C2009639, 2022R1F1A1074483)

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