• Title/Summary/Keyword: 기온 차이

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A Study on Weekly Variation of Urban Air Temperature Difference (도시 기온차이의 주간 변동에 관한 연구)

  • Zheng, Hai-Yan;Jin, Ri;Jin, Wen-Cheng;Lee, Kyoo-Seock
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.15 no.4
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    • pp.13-21
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    • 2012
  • 도시화, 산업화로 인해 도시는 그 주변지역보다 기온이 높은 도시열섬 현상이 발생하고 있으며 이는 인간 활동에 의한 인공폐열 배출량의 증가에 기인한다. 이러한 인간 활동에 의한 도시기온의 변화는 도심과 농촌지역의 차이로 인한 공간적 변이와 아울러 주중과 주간에 기온 차이가 발생하는 시간적 변이를 포함하고 있으나 도시열섬현상의 공간적 변이에 의한 연구에 비해 시간적 변이에 의한 연구는 많이 수행되고 있지 않다. 본 연구에서는 서울 도심의 주중과 주말의 기온차이를 다년간 관측을 통하여 주중과 주말의 주간 변동의 특성을 파악하여 도시 기온의 시간적 변이를 파악하기 위하여 서울시 강남구를 사례로 2007년 10월 31일부터 2010년 12월 11일까지 약 3년간 관측한 자료를 이용하여 분석한 결과 5개 관측지점 모두 주중(weekday)이 주말보다 $1.6{\sim}1.7^{\circ}C$ 기온이 더 높았으며 이는 주중에 도시 내에서 방출하는 인공폐열의 양이 더 많음을 의미하며 고밀도지역은 냉난방수요가 많아 토지이용에 따라 기온의 차가 크므로 이를 저감시키기 위한 도시 및 조경계획이 필요하다.

A Study on the Distributions of Minimum Temperature during January in the Central Region of South Korea: focused on Minimum Temperature at Cheorwon (기압배치형별 중부지방의 1월 최저기온 분포에 관한 연구: 철원의 최저기온을 중심으로)

  • Lee, Seungho;Jang, Jiwon
    • Journal of the Korean Geographical Society
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    • v.49 no.1
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    • pp.32-44
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    • 2014
  • This study aimed to analyze the characteristic of the distribution of minimum temperature during January in the central region of South Korea and to investigate causes for the occurrence of extreme minimum temperature in Cheorwon. January temperature distribution data which were collected from 25 weather stations in central area from 1991 to 2010 were investigated, and the difference of temperature between Cheorwon and the other stations in central region, such as Chuncheon, Hongcheon, Bonghwa, Daegwallyoung, Wonju and Jecheon were analyzed by the type of atmospheric pressure system. Daily mean temperature and mean of daily minimum temperature appear to be low at Cheorwon and at the sites in high altitudes, but the frequency of extreme cold wave such as below $-15^{\circ}C$ is also noticeable in Cheorwon. When the Siberian High has expanded and migratory anticyclone has moved onto the north of the Korean Peninsula, the temperature at Cheorwon is relatively low. Furthermore it shows a lesser difference between Cheorwon and the compared stations when the migratory anticyclone affected the area, even at basin like Bonghwa, Jecheon more lower than Cheorwon.

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Analysis of Air Temperature Factors Related to Difference of Fruit Characteristics According to Cultivating Areas of Persimmon (Diospyros kaki Thunb.) (감 재배지 간 과실 품질 차이에 관계한 기온요인 분석)

  • Kim, Ho-Cheol;Jeon, Kyung-Soo;Kim, Tae-Choon
    • Journal of Bio-Environment Control
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    • v.17 no.2
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    • pp.124-131
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    • 2008
  • To investigate main air temperature factors correlated to difference of fruit characteristics according to cultivating areas, fruit and air temperature characteristics of eight cultivating areas of 'Fuyu' persimmon were analyzed by principle components and multiple regression analysis. The first principal components extracted from 16 air temperature factors was annual mean temperature, mean temperature during October, annual mean minimum extreme temperature, mean temperature during growing period, and so forth. The second principal components was mean temperature during May and June and so forth. And cumulative contribution was 91.4%. The five of eight cultivating area had clearly the difference of main factors or the correlated direction among cultivating areas. In multiple regression analysis between the extracted main factors and fruit characteristics, fruit hight were highly correlated with mean temperature during growing period ($X_8$) and cumulative temperature ($X_6$), and the regression equation was $Y=150.55-5.375X_8+ 0.014X_6(r^2=0.843)$. Also this regression equation was affected by mean minimum temperature during growing period, cumulative temperature, and mean temperature during August. Fruit diameter was negatively correlated with mean temperature during growing period, flesh browning rate and Hunter a value of peel color were positively correlated with mean minimum temperature during growing period and annual minimum air temperature, respectively.

A Study on the Polarization Potential Distrbution of a Steel Disc in the Water by Specific Resistance of Corrosion Circumstances (환경의 비저항을 고려한 수중 원강판의 분극전위분포에 관한 연구)

  • 김귀식
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.17 no.2
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    • pp.105-108
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    • 1981
  • The oceanic effect on the climate of the southern coast of Korea was analysed based on the sea surface temperature and in order to study relationships between the fluctuation of the sea surface temperature and that of climatic elements. Meteolorogical data from 1960 to 1979 were used. In the year when difference between the air and water temperature was maximum, the air temperature in southern coast was higher than normal year. A fluctuation of the sea surface temperature plays an important influence to determine the variation of the air temperature in the coastal area. Humidity of the coastal climate depends upon the oceanic effect in summer, but not in winter. This results may be due to prevailing wind effect. The oceanic effect on the precipitation in the coastal area is not found.

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Sea Surface Temperature Related to the Characteristic of the Coastal Climate in the Southern Part of Korea (우리나라 남부해안 기후의 특성과 해면수온과의 관계)

  • 한영호
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.17 no.2
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    • pp.65-69
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    • 1981
  • The oceanic effect on the climate of the southern coast of Korea was analysed based on the sea surface temperature and in order to study relationships between the fluctuation of the sea surface temperature and that of climatic elements. Meteolorogical data from 1960 to 1979 were used. In the year when difference between the air and water temperature was maximum, the air temperature in southern coast was higher than normal year. A fluctuation of the sea surface temperature plays an important influence to determine the variation of the air temperature in the coastal area. Humidity of the coastal climate depends upon the oceanic effect in summer, but not in winter. This results may be due to prevailing wind effect. The oceanic effect on the precipitation in the coastal area is not found.

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Study on How Different Types of Land Use Around Green Belts Influence on the Effects of Temperature Decrease within Green Belts (녹지주변의 토지이용형태가 녹지내의 기온저감효과에 미치는 영향)

  • 윤용한;조계현;백승엽;김승태;김원태
    • Asian Journal of Turfgrass Science
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    • v.17 no.1
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    • pp.45-51
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    • 2003
  • The purpose of this study was to find out how different types of land use around green belts affect temperature decrease effects. For this, temperatures within and outside of green belts were measured. Based on the collected data, the study analyzed the land cover status and temperatures within green belts, temperature decrease effects and the range of effects around green belts, and the correlation between trees and temperature decrease effects by way of regression analysis. As a result, areas of the high temperature within green belts were formed on paved surfaces, whereas areas of low temperature were formed around forests or water surfaces. In addition, deviation was bigger in the highest temperature than the lowest one for areas of Leeward around green belts, but in general, there was a tendency that temperature became low near to green belts. As for the relation between land cover rate and temperature, what was effective to temperature decrease included forests, pasture and water surfaces. On the other hand, the effects of temperature decrease varied depending on increase or decrease of land cover rates. As for the influence of the different land use types around green belts on temperature decrease effects, the Shakuzi Park showed relatively stronger effects than the Ageomaruyama Park.

$CO_2$ 증가에 따른 기온의 연직분포 변화 양상

  • Gu Gyo-Suk;Baek Hui-Jeong;Gwon Won-Tae;Bu Gyeong-On
    • 한국지구과학회:학술대회논문집
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    • 2006.02a
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    • pp.126-128
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    • 2006
  • IPCC SRES A2, B2 온실가스 시나리오를 이용한 ECHO-G의 장기 적분 자료 분석 결과, 전구, 북반구, 남반구 및 동아시아 지역 모두에서 대류권 상층으로 갈수록 기온 증가 폭이 컸고, $250^{\sim}300$ hPa의 대류권계면 부근에서 최대값을 보였다. 전구 영역에서는 겨울철에 지표 부근의 북반구 고위도 육지지역에서 기온이 뚜렷하게 증가하였고, 상층 대류권 및 하부 성층권에서는 적도 부근의 저위도 지역에서 기온 증가가 컸다. 여름철에는 북반구 중위도 지역에서 지표 부근의 기온 증가가 컸으며 상층 대류권에서 적도 중심의 저위도 지역의 기온이 크게 증가하였다. 또한 동아시아 지역에서는 지표면에서 850 hPa까지 겨울철 기온 증가가 여름철보다 컸고, 850 hPa 이상의 상층에서는 겨울철보다 여름철에 기온이 크게 증가하였으며, 200 hPa 부근에서 가장 큰 차이를 보였다.

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A Statistical Analysis on Temperature Change and Climate Variability in Korea (한국의 기온변화와 기온변동성에 대한 통계적 연구)

  • Kim, Hyun-Chul;Choi, Seung-Kyung;Yun, Bo-Ra
    • Communications for Statistical Applications and Methods
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    • v.18 no.1
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    • pp.1-12
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    • 2011
  • We analyzed the observed temperature data for 50 years on 5 representative points in Korea to verify global warming and the increase in climate variability. We found that there was some level of global warming but we could not disregard the effects of urbanization. In addition, we could not find any information for the increase in climate variability.

A Study on the Relation between Scale of Green Spaces and Decreasing Air Temperature (녹지의 규모와 기온저감효과와의 관련성에 관한 연구)

  • 윤용한;배병호
    • Korean Journal of Environmental Biology
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    • v.20 no.1
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    • pp.10-19
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    • 2002
  • In order to investigate relation between park scale and temperature decrease in and near parks, temperature distribution was observed and was analyzed in four parks of different scales. Relation between the temperature decrease and ratio of green coverage was also analyzed by using regression analysis. Lower temperature was observed in and near the parks and larger cooling effect was implicated near the larger parks. The result of regression analysis showed that the increase of green coverage ratio lends the decrease of the temperature in the parks. The degree of the temperature decrease varied according to the types of the coverage.

Study on Increase of Urban Air Temperature at Coastal Urban Area (연안도시 부산지역에서의 열섬에 관한 연구)

  • 김유근;홍정혜
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2000.11a
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    • pp.379-381
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    • 2000
  • 도시의 기온은 지표면 피복상태의 변화와 도시내부의 에너지 사용의 증가에 의해서 주변의 교외지역과는 차이가 있다. 따라서 도시기후의 연구에 있어서 도시와 교외의 기온의 비교 연구는 도시기상의 기초가 되어 왔다(Howard, 1883, Lowry, 1969). 일반적으로 도시가 교외보다 기온이 높은 것으로 알려져 있고 기온이 높은 영역은 도심을 중심으로 나타나면서 도시열섬(Heat Island)으로 일컸는다. (중략)

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