• 제목/요약/키워드: Climate changes

검색결과 1,843건 처리시간 0.031초

날씨 및 기온에 따른 의복착용과 영향요인 (Clothing Wearing and Influencing Factors According to Weather and Temperature)

  • 지혜경;김현숙
    • 한국의류학회지
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    • 제34권11호
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    • pp.1900-1911
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    • 2010
  • This study focuses on clothing as one of the most seasonal products and investigates consumer behavior related to climate change adaptation. This study addressed four objectives: (1) to identify the clothing behavior of consumers for the adaptation to climate change; (2) to identify the effects of fashion involvement and climate sensitivity on clothing attitude for the adaptation to climate change; (3) to identify the effect of clothing purchase time on climate sensitivity and clothing attitude for the adaptation to climate change; and (4) to identify the effect of consumer demographics on climate sensitivity and clothing attitude for the adaptation to climate change. A survey questionnaire was developed and implemented to collect data for measuring clothing involvement, fashion involvement, and climate sensitivity. In addition, clothing involvement, clothing assortment needs, and clothing worn for the adaptation to climate change were measured. A total of 349 responses were analyzed by t-test, ANOVA and path analysis with SPSS18.0. The results of the analysis are as follows. Changes in temperature were considered more important than changes in weather for the functional needs of clothing, purchase needs, and assortment items needs. The assortment items wearing for the adaptation to climate change varied depending on the temperature and weather. Fashion involvement directly influenced clothing assortment needs and indirectly influenced the clothing worn for the adaptation to climate change. In terms of clothing purchase time, those purchasing clothing before the season begins, tended to have a high fashion involvement and clothing attitude for the adaptation to climate change. Those in their twenties and single, tended to be more sensitive to climate change. This study also discusses the implications for merchandising strategies.

기후변화가 남해(북부 동중국해 포함) 해양생태계에 미치는 영향 평가 시범 연구 II (Assessment of the Impact of Climate Change on Marine Ecosystem in the South Sea of Korea II)

  • 주세종;김세주
    • Ocean and Polar Research
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    • 제35권2호
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    • pp.123-125
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    • 2013
  • According to the Intergovernmental Panel on Climate Change (IPCC), ocean warming and acidification are accelerating as a result of the continuous increase in atmospheric $CO_2$. This may affect the function and structure of marine ecosystems. Recently, changes in marine environments/ecosystems have been observed (increase in SST, decrease in the pH of seawater, northward expansion of subtropical species, etc.) in Korean waters. However, we still don't understand well how climate change affects these changes and what can be expected in the future. In order to answer these questions with regard to Korean waters, the project named 'Assessment of the impact of climate change on marine ecosystems in the South Sea of Korea' has been supported for 5 years by the Ministry of Oceans and Fisheries and is scheduled to end in 2013. This project should provide valuable information on the current status of marine environments/ecosystems in the South Sea of Korea and help establish the methodology and observation/prediction systems to better understand and predict the impact of climate/marine environment changes on the structure and function of marine ecosystems. This special issue contains 5 research and a review articles that highlight the studies carried out during 2012-2013 through this project.

기후변화에 따른 북극해 빙해역 변화 (Projected Sea-ice Changes in the Arctic Sea under Global Warming)

  • 권미옥;장찬주;이호진
    • Ocean and Polar Research
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    • 제32권4호
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    • pp.379-386
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    • 2010
  • This study examines changes in the Arctic sea ice associated with global warming by analyzing the climate coupled general circulation models (CGCMs) provided in the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. We selected nine models for better performance under 20th century climate conditions based on two different criteria, and then estimated the changes in sea ice extent under global warming conditions. Under projected 21st century climate conditions, all models, with the exception of the GISS-AOM model, project a reduction in sea ice extent in all seasons. The mean reduction in summer (-63%) is almost four times larger than that in winter (-16%), resulting an enhancement of seasonal variations in sea ice extent. The difference between the models, however, becomes larger under the 21st century climate conditions than under 20th century conditions, thus limiting the reliability of sea-ice projections derived from the current CGCMs.

Assessment of climate change impacts on earthdamreservoirsinVietnam

  • Tung, H.T.
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2017년도 학술발표회
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    • pp.189-189
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    • 2017
  • Climate changes have impacted to many sectors including water resources in Vietnam. Vietnam is agricultural development country having more than 6,000 earth dam reservoirs. These reservoirs play a very important role in flow regulation for water supply to economic sectors. In the context of undesirable impacts of climate change such as increasing temparature, evaporation, and changing rainfall and rainfall pattern, water demands and inflow to reservoirs also are being influenced. This leads to changes of resevoir exploitation effects that needs to be assessed for adaptation solutions. This article summarizes evaluations on climate change impacts to 16 reservoirs in 4 regions of North-West, North-East, Central Part, and Central Highland of Vietnam. Research results showed that in the context of climate change, safety of these reservoirs will be decreased from 8% to 20% in both water supply and flood control capacity.

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Long-term Sediment Discharge Analysis in Yongdam Dam Watershed due to Climate Change

  • Felix, Micah Lourdes;Kim, Joocheol;Choi, Mikyoung;Jung, Kwansue
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2020년도 학술발표회
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    • pp.327-327
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    • 2020
  • Increase in Earth's surface temperature, higher rainfall intensity rate, and rapid changes in land cover are just some of the most evident effects of climate change. Flooding, and river sedimentation are two inevitable natural processes in our environment, and both issues poses great risks in the dam industry when not addressed properly. River sedimentation is a significant issue that causes reservoir deposition, and thus causes the dam to gradually lose its ability to store water. In this study, the long-term effects of climate change on the sediment discharge in Yongdam Dam watershed is analyzed through the utilization of SWAT, a semi-distributed watershed model. Based from the results of this study, an abrupt increase on the annual sediment inflow trend in Yongdam Dam watershed was observed; which may suggests that due to the effects of climate change, higher rainfall intensity, land use and land cover changes, the sedimentation rate also increased. An efficient sedimentation management should consider the increasing trend in sedimentation rate due to the effects of climate change.

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한반도 홀로세 온난기후 최적기 (Holocene Climate Optimum)와 지표환경 변화 (Holocene Climate Optimum and environmental changes in the Paju and the Cheollipo areas of Korea)

  • 남욱현;임재수
    • 한국제4기학회지
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    • 제25권1호
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    • pp.15-30
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    • 2011
  • 본 연구는 한반도에서 홀로세 동안 온난기후 최적기 등 기후변화와 함께 지표환경의 변화 시기와 양상을 알아보기 위한 것이다. 경기도 파주시 운정동의 곡간 퇴적물 (UJ-03, UJ-12 시추공)과 충청남도 태안군 소원면 의항리 (천리포 수목원)의 습지 퇴적물 (CL-4 시추공)을 대상으로 시추시료를 채취하였다. 파주시 운정동 지역에서는 약 7100-5000년 정도에 잔자갈과 왕모래 등 조립질 퇴적물이 퇴적되는 양상을 보이며, 약 5000-2200년 정도에는 이탄질 퇴적물이 쌓이고, 약 2200년 이후에는 간헐적으로 퇴적이 되고 토양화 작용을 받는 양상을 보인다. 천리포 수목원 지역에서는 약 7360-5000년 정도에 육성 호수가 발달하며, 약 5000-2600년 정도에는 호수 환경에서 유기물 퇴적이 점차 증가하는 양상을 보이고, 약 2600년 이후에는 이탄층이 두껍게 형성된다. 두 지역에서 지표환경의 변화 양상은 지역적, 지형적 요인에 따라 서로 다르게 나타나지만, 변화 시기는 거의 일치하고 있음을 알 수 있다. 지표환경의 변화에는 강수량 또는 유수의 세기 (에너지) 등 수문학적 요인이 주요하게 작용한 것으로 보인다. 또한 천리포 수목원 지역은 연안에 위치한 관계로 해수면 상승 높이에 따라 지형이 크게 변화하였을 것으로 생각할 수 있는데, 이에 대한 연구는 앞으로 더 진행되어야 할 것이다.

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기후변화 시나리오를 고려한 위성영상 기반 미래 탄소흡수량 분포 추정 (Estimation of Carbon Absorption Distribution based on Satellite Image Considering Climate Change Scenarios)

  • 나상일;안호용;류재현;소규호;이경도
    • 대한원격탐사학회지
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    • 제37권5_1호
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    • pp.833-845
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    • 2021
  • 탄소흡수량 산정 및 토지이용 변화에 대한 이해는 기후변화 연구에서 매우 중요하다. 기존의 연구에서는 토지이용 변화에 따른 탄소흡수량 산정에 원격탐사 기술이 사용되고 있으나 대부분 과거의 탄소흡수량 변화에 초점을 맞추고 있다. 따라서 미래 탄소흡수량 변화 예측 연구는 부족한 실정이다. 본 연구에서 CLUE-S 모형을 사용하여 토지이용 변화를 모의하고 기후변화 시나리오를 고려하여 미래 탄소흡수량의 변화를 예측하였다. 그 결과, RCP 4.5 및 8.5 시나리오에서 탄소흡수량은 각각 7.92, 13.02% 감소되는 것으로 예측되었다. 따라서 본 연구에서 제안한 방법은 다른 기후변화 시나리오를 고려한 미래 탄소흡수량 변화에도 적용이 가능할 것으로 기대된다.

기후변화 영향을 고려한 도로시설 유지관리 비용변동성 예측 이항분석모델 (Road O&M Cost Prediction Model with the Integration of the Impacts of Climate Change using Binomial Tree Model)

  • 김두연;김병일
    • 대한토목학회논문집
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    • 제35권5호
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    • pp.1165-1171
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    • 2015
  • 사회간접자본의 증가로 인해 신규건설투자 대비 유지관리 비용지출 비중이 확대되어가고 있어 유지관리 주체 입장에서 정확한 유지관리 비용 추정의 중요성이 강조되고 있다. 최근의 연구결과는 점진적이고 지속적인 기후변화에 의해 시설물에 축적되는 영향이 심각한 수준인 것으로 나타나고 있는데, 유지관리 비용추정에 있어 이를 고려한 연구가 미비한 실정이다. 본 연구에서는 중장기적 관점에서 연평균 기온변화의 도로시설 유지관리 비용 변동에의 영향을 추정하기 위해 이항분석모델을 활용한 비용변동 추정 체계를 제안하였다. 이를 위하여 IPCC (Intergovernmental Panel on Climate Change) 5차 보고서에서 도출된 기후변화 시나리오에 따른 연평균 기온변화를 도로시설 유지관리비용 변동에 적용하여, 기후변화의 영향이 고려된 유지관리 비용변동 추정을 위한 분석모델을 도출하였다. 이항모델 및 몬테칼로 시뮬레이션을 활용한 추정모델은 추후 유지관리 주체의 탄력적 의사결정에 다양하게 활용될 수 있을 것으로 판단된다.

온도와 습도의 변화에 따른 콘크리트 내부의 열, 수분 분포 예측 (Prediction of Heat and Water Distribution in Concrete due to Changes in Temperature and Humidity)

  • 박동천;이준해
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2020년도 봄 학술논문 발표대회
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    • pp.31-32
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    • 2020
  • Concrete changes its internal moisture distribution depending on the external environment, and changes in the condition of the material's interior over time affect the performance of the concrete. These effects are closely related to the long-term behavior and durability of concrete, and the degree of deterioration varies from climate to climate in each region. In this study, we use actual climate data from each region with distinct climates. A multi-physical analysis based on the method was conducted to predict the difference and degree of deterioration rate by climate.

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Relative contributions of weather systems to the changes of annual and extreme precipitation with global warming

  • Utsumi, Nobuyuki;Kim, Hyungjun;Kanae, Shinjiro;Oki, Taikan
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2015년도 학술발표회
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    • pp.234-234
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    • 2015
  • The global patterns of annual and extreme precipitation are projected to be altered by climate change. There are various weather systems which bring precipitation (e.g. tropical cyclone, extratropical cyclone, etc.). It is possible in some regions that multiple weather systems affect the changes of precipitation. However, previous studies have assessed only the changes of precipitation associated with individual weather systems. The relative contributions of the weather systems to the changes of precipitation have not been quantified yet. Also, the changes of the relative importance of weather systems have not been assessed. This study present the quantitative estimates of 1) the relative contributions of weather systems (tropical cyclone (TC), extratropical cyclone (ExC), and "others") to the future changes of annual and extreme precipitation and 2) the changes of the proportions of precipitation associated with each weather system in annual and extreme precipitation based on CMIP5 generation GCM outputs. Weather systems are objectively detected from twelve GCM outputs and six models are selected for further analysis considering the reproducibility of weather systems. In general, the weather system which is dominant in terms of producing precipitation in the present climate contributes the most to the changes of annual and extreme precipitation in each region. However, there are exceptions for the tendency. In East Asia, "others", which ranks the second in the proportion of annual precipitation in present climate, has the largest contribution to the increase of annual precipitation. It was found that the increase of the "others" annual precipitation in East Asia is mainly explained by the changes of that in summer season (JJA), most of which can be regarded as the summer monsoon precipitation. In Southeast Asia, "others" precipitation, the second dominant system in the present climate, has the largest contribution to the changes of very heavy precipitation (>99.9 percentile daily precipitation of historical period). Notable changes of the proportions of precipitation associated with each weather system are found mainly in subtropics, which can be regarded as the "hotspot" of the precipitation regime shift.

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