한국농림기상학회지 (Korean Journal of Agricultural and Forest Meteorology)

  • 제11권4호
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  • Pages.185-191
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  • 2009
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  • 1229-5671(pISSN)
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  • 2288-1859(eISSN)
한국농림기상학회 (Korean Society of Agricultural and Forest Meteorology)
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여름철 일 최고기온과 일사량의 최근 변동에 관하여

On Recent Variations in Solar Radiation and Daily Maximum Temperature in Summer

  • 최미희 (경희대학교 생태시스템공학과) ;
  • 윤진일 (경희대학교 생태시스템공학과)
  • Choi, Mi-Hee (Department of Ecosystem Engineering, Kyung Hee University) ;
  • Yun, Jin-I. (Department of Ecosystem Engineering, Kyung Hee University)
  • 발행 : 2009.12.30
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초록

여름을 제외한 다른 계절의 온난화 혹은 일 최저기온에 대한 온실효과와 도시열섬효과에 관한 연구가 활발히 수행되었던 것에 비하면 여름철의 기온상승, 특히 일 최고기온의 상승에 대한 연구는 미흡하다. 최근 25년간 전국 18개 지점에서 관측된 우리나라의 여름철(6-8월) 일 최고기온 변화를 조사하고 그 변화에 미친 일사량의 영향을 분석한 결과, 평년(1971-2000)에 비해 하루 평균 일사량은 $0.61MJ\;m^{-2}$ 증가하였으며 같은 기간 일 최고기온은 $0.1^{\circ}C$ 상승한 것으로 확인된다. 이 기간 중 일사량의 연차변이는 여름 최고기온 연차변이의 65%를 설명할 수 있었다. 일사량의 증가는 대기투과율의 증가에 기인하며 대기투과율의 증가는 에어로졸 농도 특히 아황산가스 농도 감소 때문인 것으로 판단된다. 1999년부터 2007년까지 여름철 아황산가스 농도가 계속 감소해왔는데 이와 같은 경향이 앞으로도 지속된다면 대기투과율 증가 및 이에 따른 일사량 증가와 증가된 일사량으로 인한 최고기온 상승을 예상할 수 있다.

Few studies have attempted to analyze variations of daily maximum temperature in the summer whereas many studies have analyzed warming trends in other seasons with respect to greenhouse gases or urban heat islands. We analyzed daily maximum temperature data for the summer season (June to August) at 18 locations in South Korea from 1983 to 2007. Compared to the climatic normal (from 1971 to 2000), an average increase of $0.1^{\circ}C$ was found for the summer daily maximum temperature along with an increase of $0.61MJ\;m^{-2}$ in daily solar radiation. Approximately 65% of the annual variations of the summer daily maximum temperature could be explained by the solar radiance alone. Higher atmospheric transmittance due to lower aerosol concentration (especially of sulfur dioxide) is believed to have caused the recent increase in solar irradiance. Daily maximum temperature of the summer is expected to keep rising if the clean air activities are maintained in the future.

키워드

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피인용 문헌

  1. Assessment of the Angstrom-Prescott Coefficients for Estimation of Solar Radiation in Korea vol.18, pp.4, 2016, https://doi.org/10.5532/KJAFM.2016.18.4.221