• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.70-70
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• 2020

기후변화 대응을 위해 파리기후협약에서는 온실가스 배출량 감축을 위한 구체적인 목표를 제시하였다. 에너지 분야는 온실가스가 가장 많이 배출되는 분야 중 하나이며, 온실가스 감축 방안으로 신재생 에너지에 대한 관심이 증가하고 있다. 특히 수력에너지는 신재생 에너지 중 가장 현실적이고 많이 활용되는 에너지원으로 각광받고 있다. 아시아 지역은 개발도상국이 다수 위치하고 있고 미개발된 잠재 수력에너지가 풍부한 지역으로 국내 기업의 진출 가능성이 높은 지역이다. 수력에너지 개발을 위해서는 수력 발전 가능량 평가가 필수적이며, 수력 발전 가능량은 기후, 수문조건에 민감하게 반응하기 때문에 기후변화에 따른 수력 발전 가능량의 변동 가능성이 있다. 본 연구에서는 아시아 지역에 대한 AR5 기후변화 시나리오 기반 수력 발전 가능량을 전망하고 분석하고자 하였다. 수력 발전 가능량 산정을 위한 수문 자료 생성은 지표수문해석 모형 VIC (Variable Infiltration Capacity)를 이용하였으며, 모형 입력 자료로 APHRODITE (Asian Precipitation -Highly Resolved Observational Data Integration Towards Evaluation of water resources) 기상 자료, USGS (U.S. Geological Survey) 수치지형도, FAO (Food and Agriculture Organization) 토양도, NCC (Norwegian Climate Centre) NorESM 기후변화 시나리오를 활용하였다. 분석결과 수력 발전 가능량은 과거 및 미래 기간에 동남아시아, 남아시아 지역에 풍부한 것으로 나타났다. 동남아시아는 유출량이 풍부하며, 남아시아는 유역별 낙차가 크기 때문에 수력 발전 가능량이 풍부한 것으로 나타났다. 따라서 동남아시아 지역의 수력 발전 가능량이 남아시아에 비해 기후변화의 영향을 크게 받는 것으로 나타났다. 또한 미래 기후변화로 인해 유출량의 변동 폭이 더욱 넓어져 발전 효율이 감소하는 것으로 나타나 수력발전의 안정성이 감소하였다. 본 연구는 아시아 지역의 수력 발전 가능량을 산정하고 특징을 분석하였다는 점에서 의미가 있다.

• Journal of Korean Society of Forest Science
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• v.108 no.1
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• pp.10-20
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• 2019

The purpose of this study is to identify the long-term area changes in the subalpine coniferous forests in Korea in order to understand the changes in the subalpine forest ecosystems vulnerable to climate change. We analyzed 20 years of time-series Landsat satellite images (mid 1990s, mid 2010s) for change detection of coniferous forests and compared with the long term changes of climate information to identify their relationship in the study area. As a result, the area of coniferous forests in the study region decreased by 25% over 20 years. The regions with largest changes are Seoraksan, Baegunsan-Hambaeksan-Jangsan, Jirisan, and Hallasan. The region with the largest decrease in area was Baegunsan (reduced area: 542 ha), and the region with large decrease in area and the largest rate of decrease was Hallasan (rate of decrease: 33.3%). As the Jeju region has the most rapid temperature rise, it is projected that Hallasan is the most vulnerable forest ecosystem affected by climate change. The result of this study shows that from a long-term perspective the overall coniferous forests in the subalpine region are declining, but the trend varies in each region. This national and long-term information on the change of coniferous forests in the subalpine region can be utilized as baseline data for the detailed survey of endangered subalpine coniferous trees in the future.

• Journal of Korean Society of Forest Science
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• v.88 no.1
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• pp.73-85
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• 1999

This study was conducted to reveal the characteristics of the early growth by locality for Korean white pine planted in Gapyung and Kwangju, Kyunggi-Do and Youngdong, Choongchungbuk-Do. The effects of local climatic conditions as one of environmental factors on the growth were also analyzed. For this, several stand variables such as number of trees survived, mean DBH, mean height, basal area per hectare, and volume per hectare by stand age were measured and summarized for each locality. Based on these statistics, periodic annual increments for 8 years from stand age 10 to 18 were calculated for each of stand variables. A topoclimatological technique, for the estimation of local climatic conditions, which makes use of empirical relationships between the topography and the weather in study areas was applied to produce reasonable estimates of monthly mean, maximum, minimum temperatures, relative humidity, precipitation, and hours of sunshine over remote land area where routine observations are rare. From these monthly estimates, 17 weather variables such as warmth index, coldness index, index of aridity etc. which affect the tree growth, were computed for each locality. The periodic annual increments were then correlated with and regressed on the weather variables to examine effects of local weather conditions on the growth. Gapyung area provided the best conditions for the growth of Korean white pine in the early stage and Kwangju area ranked second. On the other hand, the growth pattern in Youngdong ranked last overall as expected. It is also found that the local growth patterns of Korean white pine in juvenile stage were affected by typical weather conditions. The conditions such as low temperature, high relative humidity, and large amount of precipitation provide favorable environment for the growth of Korean white pine. Especially, the diameter growth, basal area growth, and volume growth are mainly influenced by the amount of precipitation. However, it is proved that the height growth is affected by both the precipitation and temperature.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.367-367
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• 2020

최근 전세계적으로 기후변화로 인해 가뭄의 발생 가능성이 높아지고 있으며 그에 대한 인적피해와 경제적 손실로 인한 피해액은 증가하고 있다. 특히, 국내의 충남지역은 최근 강수량이 평년 대비 75% 수준으로 감소하고 있으며, 지속적인 가뭄이 발생하여 용수 확보에 어려움을 겪고 있다. 또한, 2015년에는 강수량 감소로 인해 보령댐을 상수원으로 사용하고 있는 충남 서북부지역 8개 시군의 용수공급에 큰 차질이 있었다. 지속적인 가뭄 상황이 반복되면서 기후변화의 영향에 따라 미래의 물공급량 변화 및 물부족에 대한 연구와 이를 분석하여 정확성을 높이는 물수지 분석모형이 지속적으로 개발되고 있다. 이에 본 연구에서는 가뭄이 발생한 충남지역을 대상으로 기후변화에 따른 미래 물부족 변화에 대한 경향성을 파악하고자 한다. 미래의 물부족 변화를 파악하기 위해 기상청 RCP 8.5 시나리오의 40년(2008~2047년) 중권역별 강수량과 잠재증발산량 일단위 자료를 수집하였다. 수집된 중권역별 기상자료를 하천유역별 일단위 기상자료를 활용하여 TANK 모델을 이용한 하천 일유출모의와 비유량법을 이용하여 저수지의 일유량을 산정하였다. 미래의 수혜면적변화와 생활/공업/농업 수요량 추정을 통해서 하천 및 저수지 물수지 분석을 진행하여 미래기간 30년에 대한 일단위 물수급을 산정하였다. 미래기간에 대한 분석은 기준기간 R0(2008~2017년) 대비, 미래기간 S1(2018~2027년), S2(2028~2037년), S3(2038~2047년)에 대한 연평균 물부족량과 경로별 경향성을 파악하였다. 대상지역의 물부족량에 대한 분석결과, 기준기간 대비 S1, S2, S3 기간에 각각 27.8%, 10.8%, 23.1% 감소하는 경향이 나타났다. 이는 미래의 강우량이 점차 증가하는 경향과 수혜면적 변화시 논과 밭 면적이 지속적인 감소로 인해 수요량에 영향을 받았을 것으로 판단된다. 본 연구 결과를 바탕으로 장래 하천유역의 가뭄에 대한 피해 예측 및 물수급 파악에 활용될 수 있을 것으로 판단된다.

• 한국신재생에너지학회:학술대회논문집
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• 2007.06a
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• pp.292-294
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• 2007

본 논문에서는 MW급 집중배치형 태양광 발전시스템 설치 전 기상청 기상대 기후자료를 Solar Pro 시뮬레이터에 적용하여 최적의 발전 Site를 선정하는 방법을 소개하고, 그 결과를 보여준다. 국내 지역별로 일사량 및 지역 기후 특성에 따라 태양광 발전의 발전량이 차이가 남에 따라 태양광발전 사업 전 반드시 거쳐야 할 단계이다. 이를 토대로 MW급 태양광 발전시스템 설치 시 각 지역별 경제성 차이도 알아 볼 수 있다.

• Proceedings of the Korea Water Resources Association Conference
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• 2012.05a
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• pp.405-405
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• 2012

기후변화에 따른 태풍, 집중호우 등에 의해 설계홍수량을 능가하는 크기의 홍수가 발생하여 큰 피해를 입는 경우가 발생하고 있다. 따라서 기후변화를 고려하여 예측한 미래의 강우자료에 의한 홍수량의 설계가 필요하다. 본 연구의 목적은 기후변화를 고려해 예측한 미래의 강우자료에 기초한 설계 홍수량을 산정하고, 이를 기존의 설계 홍수량과 비교분석하는데 있다. 대상지구는 이동저수지 유역을 선정하였고, HEC-GeoHMS를 이용해 대상지구의 유역자료를 추출하였다. 설계홍수량 추정을 위한 과거 강우자료는 수원기상대의 1964년부터 2011년까지의 자료기간을 수집하여 사용하였으며, 미래의 강우자료는 기상청 국가표준 기후변화 시나리오에서 제공하는 자료를 사용하였다. 수집된 강우자료를 바탕으로 FARD2006의 Gumbel 분포와 모멘트법을 적용하여 빈도별 확률 강우량을 각각 산정하였다. 산정된 빈도별 확률강우량을 수원지역의 Huff 분포에 적용해 시간별 강우분포를 구한 후 HEC-HMS의 Clark 단위도법을 이용하여 빈도별 홍수량을 각각 산정하여 그 결과를 비교 분석하였다. 본 연구를 통해 미래 강우자료에 의한 홍수량 설계의 필요성을 입증하고, 이를 바탕으로 다른 대상 지구에 대해서도 적용하여 미래의 홍수량 예측에 따른 설계빈도 설정에 활용할 수 있을 것으로 기대된다.

• Journal of Korea Water Resources Association
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• v.30 no.3
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• pp.247-256
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• 1997

Some climatological features of summer precipitation in Korea were studyed using the precipitation data of 15 stations of Korea Meteorological Administration where more than 30 years data since 1961 are available. The study included statistical analysis of precipitation by climatological normal values, and comparison of inter-annual variation of annual precipitation, summer precipitation and precipitation during the Changma. The relationships between them were also analyzed. It was revealed that, in Korea, more than half of annual precipitation was concentrated in summer season (June to August), and it was usually influenced by the Changma. The ratio of summer and Changma precipitation to the annual precipitation showed that effect of Changma was bigger in the central inland area, while comparatively smaller in the east coastal area and Cheju Island due to topographical effects. It was also shown that the fluctuation of the annual precipitation was less variable than those of summer and Changma precipitations. Thus, it was suggested that understanding the variation features of summer precipitation associated with monsoon activities was very important to figure out the change of annual precipitation for the national water resources planning.

• Analyses & Alternatives
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• v.7 no.2
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• pp.179-207
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• 2023

Carbon neutrality, the international community's practical challenge in response to climate change, is becoming a key industrial strategy for the future development of nations. Despite concerns that China, as an economic powerhouse in the G2, may face challenges leading global climate change efforts due to its high-carbon-emitting industrial structure, it is leveraging carbon neutrality to enhance its industrial competitiveness. The Chinese government has formulated national policies for achieving carbon neutrality and detailed sector-specific plans to implement them. In particular, it aims to leverage carbon neutrality industrial strategies as a lever for adjusting the domestic industrial structure and fostering new industries, at the same time responding to international climate norms and external pressures. However, the effectiveness of carbon-neutral industrial strategies is expected to vary based on regional conditions such as economic and industrial levels. This article analyzes the regional conditions for implementing carbon neutrality in China, as well as the contents and characteristics of major industrial policies. Due to differing levels of economic development and industrial structures, significant variations in carbon emissions, size, emission sources, and efficiency are inevitable across regions. These disparities introduce diverse initial conditions and endogenous factors in pursuing carbon-neutral goals, limiting the direction and implementation of carbon-neutral industrial strategies favoring certain regions. In particular, the extent of policy autonomy granted to local governments regarding carbon neutrality implementation will influence the regional dynamics of central-local environmental governance. Consequently, it is crucial to emphasize regional monitoring alongside comprehensive national research to accurately navigate the path towards carbon neutrality in China. In summary, the article underscores the importance of understanding regional variations in economic development, industrial structure, and policy autonomy for successful carbon neutrality implementation in China. It highlights the need for regional monitoring and comprehensive national research to determine a more precise direction for achieving carbon neutrality.

• Journal of the Korean Society of Hazard Mitigation
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• v.11 no.3
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• pp.29-35
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• 2011

This research proposes the suitable method for estimating the future probable rainfall based in 2100 on the observed rainfall data from main climate observation stations in Korea and the rainfall data from the A1B climate change scenario in the Korea Meteorological Administration. For all those, the frequency probable rainfall in 2100 was estimated by the relationship between average values of 24-hours annual maximum rainfalls and related parameters. Three methods to estimate it were introduced; First one is the regressive analysis method by parameters of probable distribution estimated by observed rainfall data. In the second method, parameters of probable distribution were estimated with the observed rainfall data. Also the rainfall data till 2100 were estimated by the A1B scenario of the Korea Meteorological Administration. Last method was that parameters of probable distribution and probable rainfall were estimated by the A1B scenario of the Korea Meteorological Administration. The estimated probable rainfall by the A1B scenario was smaller than the observed rainfall data, so it is required that the estimated probable rainfall was calibrated by the quantile mapping method. After that calibration, estimated probable rainfall data was averagely became approximate 2.3 to 3.0 times. When future probable rainfall was the estimated by only observed rainfall, estimated probable rainfall was overestimated. When future probable rainfall was estimated by the A1B scenario, although it was estimated by similar pattern with observed rainfall data, it frequently does not consider the regional characteristics. Comparing with average increased rate of 24-hours annual maximum rainfall and increased rate of probable rainfall estimated by three methods, optimal method of estimated future probable rainfall would be selected for considering climate change.

• Korean journal of applied entomology
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• v.50 no.4
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• pp.325-333
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• 2011

This study focused on the green peach aphid, Myzus persicae, as an indicator pest in Chinese cabbage cultivation to develop a genetic marker. We hypothesized that M. persicae gene flow is related to climate change. Genetic variation was analyzed using five local populations collected at different altitudes (157 m, 296 m, 560 m, 756 m and 932 m above sea level) in Hoengseong, Pyeongchang, and Gangneung areas, plus a laboratory strain used as an outgroup. There were no differences in ecological characteristics among strains. Esterase isozyme pattern and inter-simple sequence repeat (ISSR) PCR results showed significantly different bands between laboratory and wild, local populations. However, there was no difference among local populations. Partial fragments of ribosomal RNA (rRNA) and mitochondrial cytochrome oxidase I (mtCO I) were amplified and their nucleotide sequence was analyzed. Single nucleotide polymorphisms (SNPs) were detected in internal transcribed spacer-2 (ITS-2) and mtCO I regions among the five local populations. These SNPs can be use to discriminate different populations of M. persicae to monitor gene flow.