• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.273-273
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• 2021

기후변화는 미래세대의 문제뿐만 아니라 현재를 살고 있는 우리들에게도 매우 심각한 화두가 되고 있다. 또한 OECD 환경전망 2050 보고서를 비롯한 많은 연구에서 온실가스 증가로 인한 지구 평균기온 상승을 경고하고 있다. 평균기온 상승은 강우패턴의 변화를 일으켜 극한기후상황인 가뭄, 폭염, 홍수 등의 증가로 이어지며, 많은 피해가 예상된다. 우리나라 연평균기온은 1981년~2010년 1.2℃ 상승 했으며, RCP8.5 시나리오에서는 2100년경 4.7℃ 증가하는 것으로 전망된다. 이로 인해 열대야일수, 폭염일수, 여름일수와 같은 극한지수가 증가하고 강수량 변동이 매우 클 것으로 예상되며, 가뭄관련 최대무강수 지속기간도 길어지며, 극심한 물부족이 예상된다. 따라서 가뭄 재해를 대비하고, 지하수의 활용에 대한 계획 수립에 바탕이 되는 연구가 필요하다. 본 연구에서는 기후변화에 의한 가뭄기간 동안의 지하수위 변동 특성을 예측하고자 한다. 기후변화 예측은 IPCC 대표농도경로 RCP2.6, RCP4.5, RCP6.0, RCP8.5 시나리오에 의한 기상청의 미래 기후전망 프로그램을 활용하여 경주지역의 2021년~2100년 까지의 평균기온, 강수량을 분석하였다. 연구대상 유역의 도시개발계획을 조사하고 장래 토지피복도를 추정하여 SWAT모형에 적용하여 지하수 함양에 영향을 미칠 수 있는 인자들에 대한 보정 및 모델링을 실시하여 장래 기후변화에 의한 지하수 함양량을 추정하였다.

• Proceedings of the Korea Water Resources Association Conference
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• 2022.05a
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• pp.72-72
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• 2022

전 세계적으로 기후변화로 인한 기상재해의 발생 빈도가 증가하고 있다. 특히 기후변화로 인한 기온상승은 사계절이 뚜렷한 우리나라의 기후도 동남아와 같은 아열대 기후로 변하고 있는 추세이다. 기후변화 전망보고서에 따르면는 우리나라의 연 강우량이 현재(1,491mm)보다 약 11% 증가(1,658mm) 하고, 연평균기온이 현재 대비 2040년대 0.7℃, 2090년대 3.1℃ 상승할 것으로 전망했다. 기후변화에 의한 여름철 기온 상승과 겨울철 기온 하강은 에너지 소비량과 소비 패턴 변화를 유발하고 에너지 수요와 공급 불일치의 원인이 된다. 이에 정부에서는 기후변화에 적응하기 위해 화석연료 기반의 에너지 생산에서 그린에너지를 이용한 에너지 생산으로 전환이 효과적이라고 공표하였다. 이어 2050년까지 탄소중립 달성을 위해 신재생에너지르 통한 도전과제를 제시하였으며, 기업 및 공공기관의 RE100참여를 확대하고 활용 가능한 유망 재생에너지원을 발굴을 목표로 하고 있다. 이에 본 연구팀은 국가 기상재해·그린에너지 빅데이터 센터를 설립하여 정부의 다양한 이행수단의 근거 데이터를 제공하고, 민·관에서 활용 할 수 있는 그린에너지 데이터를 제공하고자 한다. 본 센터에서는 침수예측데이터, 풍력, 태양광, 소수력, 수열 잠재 에너지 데이터를 생산하고 있으며, 각 데이터에 대한 활용 및 서비스 방안을 소개하고자 한다.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.19 no.3
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• pp.213-221
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• 2007

In response to anthropogenic global warming due to a buildup greenhouse gas, the effect of the air temperature on water temperature has been noticed and some efforts have been made to build an air/water temperature relationship at the Masan Bay area by the Ministry of Maritime Affairs & Fisheries (MOMAF). As a result of analyzing the auto- and cross-correlation coefficient between air/water temperature, high correlation $(\sim0.9)$ is shown and the correlation coefficient of air temperature is higher than that of water temperature at the lag time less than approximately 10 days. Separate functions are fitted to the air/water relationship at the Masan Bay to take hysteresis into account. The slopes of the straight line for the rising limb are 0.829 and 0.774 for MA1 and MA2 station respectively, while 1.385 and 1.444 ($\sim1.75$ times larger) for the falling limb. Consequently, the seasonal hysteresis should be considered in order to determine an air/water relationship and accurately estimate the water temperature using the air temperature at Masan Bay.

• 산림경영
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• s.82
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• pp.27-29
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• 1992

• Korean Journal of Soil Science and Fertilizer
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• v.17 no.3
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• pp.307-313
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• 1984

The lapse rate of air temperature with respect to the elevation in the Taebaek Mountainous area was calculated and its application to recommendation for the safe cropping period in rice cultivation was attempted. The data for three sites of elevations at 300, 540 and 832-m above sea level were collected from the Regional Rural Guidance Office of Pyungchang Gun. The lapse rate ranged from $0.53^{\circ}C$ per 100-m elevation on January to $1.02^{\circ}C$ on March with average of $0.69^{\circ}C$. The estimated period of possible rice cropping decreased by the rate of 7 to 8 days per 100-m elevation. The rice variety requiring the cumulative temperature of $1800^{\circ}C$ such as Taeback-byo in Jinbu area could be cultivated below 300-m of altitude under the Taebaek Mountainous climatic condition. The variety requiring the cumulative temperature of $1400^{\circ}C$ such as Songjeon-byo could be adaptable up to the 500-m altitude for safe cultivation.

• Journal of the Korean association of regional geographers
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• v.15 no.3
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• pp.337-350
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• 2009

The phenological change of plants is an indication of local and regional climate change. An increase in temperature due to global warming is manifest in the change of phytophenological events. In this study, trends in the plant phenology and its correlation with air temperature in South Korea were examined using observational data for 18 phenological phases. The spring phenological phases, such as sprouting and flowering, occurred earlier (from 0.7 to 2.7 days per 10-year) during 1945 ${\sim}$2007. while the autumn phases, such as full autumn tinting, moved later (from 3.7 to 4.2 days per 10-year) during 1989 ${\sim}$2007. The correlation between the plant phenology in spring with the air temperature from February to March is relatively high. The warming in the early spring (February March) by $1^{\circ}C$. causes an advance in the spring plant phenology of 3.8 days. The plant phenology in autumn also correlates with the average temperature in October. The autumn plant phenology for a $1^{\circ}C$ increase in October temperature occurs about 3.1 days later.

• Korean Journal of Agricultural and Forest Meteorology
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• v.2 no.3
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• pp.95-102
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• 2000

The northward shift of the cultivation region of winter barley has been considered because of consecutive warm winters from the middle of 1980's. There was 1.02$^{\circ}C$ rise in mean air temperature during winter barley cropping season from 1975 to 1998. During this period, the maximum air temperature affected the mean air temperature rise rather than the minimum air temperature. The amount of mean precipitation was 513.3 mm during winter barley cropping season from 1975 to 1998 and was least in 1992. Sunshine hours has increased little by little in the all regions except rural regions. The air temperature during winter barley cropping season from 1987 to 1999 in which the winter was warm was higher than the normal air temperature(1961~1990). On the other hand, the air temperature during winter barley cropping season from 1974 through 1986 was similar to the normal air temperature. The amount of mean precipitation during winter barley cropping season from 1987 through 1999 was similar to the normal precipitation except April. During this period, the amount of mean precipitation of April was lower by 26 mm than the normal year(1961~1990). Sunshine hours during winter barley cropping season from 1987 to 1999 decreased generally in comparison with a normal year. Considering the air temperature rise during wintering from 1987 to 1998, it might be possible to extend the cropping area of winter barley northward.

• Korean Journal of Environment and Ecology
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• v.24 no.3
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• pp.227-234
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• 2010

To see the influence of bird species by the change of temperature in city, we have carried out bird census 22 times for 6 years from 2003 to 2008 in Worldcup Park, Seoul. And we analysed the correlation between the temperature of Seoul and wildbirds. 15 orders, 38 families and 102 species were confirmed to have existed. We could find that Hypsipetes amaurotis gradually turned out to have increased with statistical significance for 6 years. To analyze the relationship between the temperature of Seoul and wildbirds, we have chosen 31 bird species observed more than 30% in frequency and proceeded the regression analysis. The survey shows that with the temperature rise the number of the resident birds such as Pica pica, Parus palustris, Anas platyrhynchos and Anas poecilorhyncha and the migratory birds such as Buteo buteo has declined. These 5 species have a possibility to be decreased as a global climate warming and maybe move to another habitat. In contrast, Oriolus chinensis and Falco tinnunculus are characterized into the species that increased due to the rising temperature. So they have a posibility to increase and expand their habitat. This survey shows that temperature rise can cause to change the composition of bird species. And 7 bird species related with the change of temperature have a great possibility as a indicator of the climate change.

• Environmental engineer
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• s.67
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• pp.10-12
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• 1992

대기중의 CO$_2$농도가 현재의 2배가 되면 대기온도는 3.8$^{\circ}C$상승한다고 한다. 그러나 CO$_2$가 대기중에서 증가하고 도시온도의 증가로 인한 green house effect와 분진농도가 증가하여 dust dome을 형성하게 되고 또 분진은 구름의 핵을 형성하므로 구름이 많아지면 기온이 내려간다. 대기의 혼탁도가 2배가 되면 기온은 3.4$^{\circ}C$내려간다고 하며 일사량이 1% 감소해도 지표의 평균 기온은 $5^{\circ}C$내려가고 15% 일사량이 감소하면 기온은 $9^{\circ}C$ 떨어진다.

• The Korean Journal of Ecology
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• v.24 no.5
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• pp.281-288
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• 2001

The relationships between the growths of Abies koreana W. and climatic factors were analyzed by the use of tree-ring analysis at the subalpine belt of Mt. Halla National Park. The four cores were extracted from each 21 trees at north-facing slope (1,900m a.s.1.). The site chronology was established on the periods from 1912 to 1999. The growth of A. koreana was very poor, in particular in the years of 1982, 1988 and 1996. Simple correlation was employed to analyze the relationship between the growth of A. koreana and climatic factors. The result of simple correlation indicates that the growth of A. koreana represent positive correlations both with the mean temperatures of April and previous November, and the precipitation of previous December and January. The presence of large number of frost-damaged scars in the individual trees of A. koreana implies that local freezing temperature conditions at Mt. Halla have occurred in 1964, 1965 and 1966. The correlations between the fir chronology SOI(Southern Oscillation Index) of previous January, February and November were significantly positive. The growth ratio of A. koreana demonstrates that this species is sensitive to seasonal variations. As the winter temperature rises, the growth ratio of A. koreana decreases, on the other hand, the increase of autumn temperature accelerates the growth ratio of A. koreana. The growth decline of A. koreana was observed from 51 cores out of the 54 cores, and the overall growth declines have initiated at 1978, 1982 and 1988. Distinct growth decline of A. koreana in the range of 70% is noticed at 34 cores out of the 51 cores. The decline of, A. koreana growth appears to be related to the winter temperature which has increased since mid-1970s.