• 제목/요약/키워드: climate characteristics

검색결과 1,997건 처리시간 0.033초

Global environment change monitoring using the next generation satellite sensor, SGLI/GCOM-C

  • HONDA Yoshiaki
    • 대한원격탐사학회:학술대회논문집
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    • 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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    • pp.11-13
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    • 2005
  • The Third Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) concluded that many collective observations gave a aspect of a global warming and other changes in the climate system. Future earth observation using satellite data should monitor global climate change, and should contribute to social benefits. Especially, human activities has given the big impacts to earth environment This is a very complex affair, and nature itself also impacts the clouds, namely the seasonal variations. JAXA (former NASDA) has the plan of the Global Change Observation Mission (GCOM) for monitoring of global environmental change. SGLI (Second Generation GLI) onboard GCOM-C (Climate) satellite, which is one of this mission, is an optical sensor from Near-UV to TIR. This sensor is the GLI follow-on sensor, which has the various new characteristics. Polarized/multi-directional channels and 250m resolution channels are the unique characteristics on this sensor. This sensor can be contributed to clarification of coastal change in sea surface. This paper shows the introduction of the unique aspects and characteristics of the next generation satellite sensor, SGLIIGCOM-C, and shows the preliminary research for this sensor.

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통계적 공간상세화 기법의 시공간적 강우분포 재현성 비교평가 (Comparative Evaluation of Reproducibility for Spatio-temporal Rainfall Distribution Downscaled Using Different Statistical Methods)

  • 정임국;황세운;조재필
    • 한국농공학회논문집
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    • 제65권1호
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    • pp.1-13
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    • 2023
  • Various techniques for bias correction and statistical downscaling have been developed to overcome the limitations related to the spatial and temporal resolution and error of climate change scenario data required in various applied research fields including agriculture and water resources. In this study, the characteristics of three different statistical dowscaling methods (i.e., SQM, SDQDM, and BCSA) provided by AIMS were summarized, and climate change scenarios produced by applying each method were comparatively evaluated. In order to compare the average rainfall characteristics of the past period, an index representing the average rainfall characteristics was used, and the reproducibility of extreme weather conditions was evaluated through the abnormal climate-related index. The reproducibility comparison of spatial distribution and variability was compared through variogram and pattern identification of spatial distribution using the average value of the index of the past period. For temporal reproducibility comparison, the raw data and each detailing technique were compared using the transition probability. The results of the study are presented by quantitatively evaluating the strengths and weaknesses of each method. Through comparison of statistical techniques, we expect that the strengths and weaknesses of each detailing technique can be represented, and the most appropriate statistical detailing technique can be advised for the relevant research.

기후변화 리스크의 지역 불평등 모니터링 : 폭염을 중심으로 (Monitoring regional inequalities in climate change risk - A Focus on Heatwave -)

  • 김근한
    • 한국환경복원기술학회지
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    • 제24권6호
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    • pp.97-107
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    • 2021
  • Abnormal climate caused by climate change causes enormous social and economic damage. And such damage and its impact may vary depending on the location and regional characteristics of the region and the social and economic conditions of local residents. Therefore, it is necessary to continuously monitor whether there are indicators that are weaker than other regions among the detailed indicators that constitute the risk, exposure and vulnerability of climate change risk. In this study, the concept of climate change risk was used for heatwave to determine regional inequality of climate change risk. In other words, it was judged that inequality in climate change risk occurred in regions with high risk but high exposure and low vulnerability compared to other regions. As a result of the analysis, it was found that 13 local governments in Korea experienced regional inequality in climate change risk. In order to resolve regional inequality in climate change risks, the current status of regional inequality in climate change should be checked based on the analysis proposed in this study, there is a need for an evaluation and monitoring system that can provide appropriate feedback on areas where inequality has occurred. This continuous evaluation and monitoring-based feedback system is expected to be of great help in resolving regional inequality in climate change risks.

UNEP와 MDM 기후지수의 추세 및 변동 특성 분석: 충청도 지역을 중심으로 (Analysis of trend and variation characteristics of UNEP and MDM climate indices: the case study of Chungcheong-do province)

  • 조현곤;최경숙
    • 한국수자원학회논문집
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    • 제54권11호
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    • pp.999-1009
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    • 2021
  • 최근 기후변화로 인한 극한기상 현상의 발생빈도 및 강도가 증가하고 있는 추세이므로 기후조건을 평가 분석하여 기후변화에 의한 부정적인 영향을 사전에 관리하고 대응하는 것이 매우 중요하다. 본 연구에서는 충청도 지역의 기후지수를 산정하여 지역 기후의 추세변화와 최근 20년간 기후의 변동 특성을 분석하였다. 기상청에서 운영하고 있는 10개 종관기상관측소의 1973년-2020년 동안의 기상자료를 활용하여 연도별, 월별 UNEP-MP 지수, UNEP-PM지수과 MDM지수를 산정하고 K-S 검정 통한 정규성 분석, Pearson기법과 Spearman기법을 적용하여 기후변화의 추세를 분석하였다. 충청남도 지역이 충청북도 지역보다 상대적으로 습한 기후로 평가 되었으며 연 기후지수 추세 변화는 청주, 충주 등의 지점에서 건조 기후 추세를 보인반면 서산, 부여 등의 지점에서는 습윤 기후 추세를 보였다. 월별 추세변화 분석 결과 여름과 가을에 습윤 기후 경향을 보인 반면 봄과 겨울에는 건조 기후 경향을 보였다. 과거 10년(2001년-2010년)과 최근 10년(2011년-2020년) 동안 기후지수의 비교에서는 과거 10년보다 최근 10년 동안에 평균 기후지수가 감소하였으며 추세 변화 또한 건조기후 추세를 보였다.

노인장기요양시설 요양보호사의 직무특성이 조직의 맥락적 성과에 미치는 영향: 직무태도와 조직풍토의 이중매개효과 (A Study on the Impact of Caregivers' Job Characteristics on Organizational Contextual Performance in Long-Term Care Facilities for the Elderly)

  • 윤일현
    • 문화기술의 융합
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    • 제10권3호
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    • pp.675-681
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    • 2024
  • 본 연구는 노인장기요양 시설의 요양보호사를 대상으로 요양보호사의 직무특성과 조직의 맥락적 성과에 관한 매개효과를 실증 검증한 연구로서 직무태도, 조직풍토의 이중매개효과를 실증분석 하는 것을 목적으로 한다. 본 연구를 위하여 노인장기요양 시설에서 근무하고 있는 요양보호사 274명을 대상으로 하였다. 수집한 자료 분석은 SPSS Process macro를 사용하였다. 다음과 같은 연구결과가 나왔다. 먼저, 요양보호사의 직무특성, 직무태도, 조직풍토, 맥락적 성과는 유의미한 정적 상관관계를 가지고 있었다. 둘째, 요양보호사의 직무특성과 맥락적 성과 사이에 직무태도, 조직풍토는 이중매개효과가 있었다. 셋째, 요양보호사의 직무특성과 맥락적성과 사이에 직무태도와 조직풍토는 유의한 매개효과 경로가 있는 것으로 확인되었다. 연구를 바탕으로 요양보호사의 직무성과를 향상할 수 있는 심리적인 자발적인 직무역량 방안 마련과 후속 연구를 제안하였다.

유효가뭄지수(EDI)를 이용한 한반도 미래 가뭄 특성 전망 (Projection of Future Changes in Drought Characteristics in Korea Peninsula Using Effective Drought Index)

  • 곽용석;조재필;정임국;김도우;장상민
    • 한국기후변화학회지
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    • 제9권1호
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    • pp.31-45
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    • 2018
  • This study implemented the prediction of drought properties (number of drought events, intensity, duration) using the user-oriented systematical procedures of downscaling climate change scenarios based the multiple global climate models (GCMs), AIMS (APCC Integrated Modeling Solution) program. The drought properties were defined and estimated with Effective Drought Index (EDI). The optimal 10 models among 29 GCMs were selected, by the estimation of the spatial and temporal reproducibility about the five climate change indices related with precipitation. In addition, Simple Quantile Mapping (SQM) as the downscaling technique is much better in describing the observed precipitation events than Spatial Disaggregation Quantile Delta Mapping (SDQDM). Even though the procedure was systematically applied, there are still limitations in describing the observed spatial precipitation properties well due to the offset of spatial variability in multi-model ensemble (MME) analysis. As a result, the farther into the future, the duration and the number of drought generation will be decreased, while the intensity of drought will be increased. Regionally, the drought at the central regions of the Korean Peninsula is expected to be mitigated, while that at the southern regions are expected to be severe.

Perceived Discrimination and Workplace Violence among School Health Teachers: Relationship with School Organizational Climate

  • Kim, Joohee;Ko, Young
    • 지역사회간호학회지
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    • 제33권4호
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    • pp.432-445
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    • 2022
  • Purpose: The purpose of this study was to identify the relationship of the school organizational climate with perceived discrimination and the workplace violence among school health teachers. Methods: The research design was a cross-sectional study. The subjects of the study were 350 school health teachers with more than one year of teaching experience. Data were collected online using a questionnaire. Research variables are general characteristics, organizational climate, perceived discrimination, and workplace violence. The relationship between organizational climate and perceived discrimination and the relationship between organizational climate and workplace violence were analyzed using regression analysis. Results: The score for organizational climate of health teachers was 3.10 out of 5 points, the score for perceived discrimination was 2.85 out of 5 points, and the experience rate of workplace violence was 16.9%. School organizational climate was related to both workplace violence and perceived discrimination. The subcomponents of organizational climate affecting perceived discrimination of health teachers were interrelationship and the level of compensation. The subcomponents of organizational climate affecting workplace violence of health teachers were interrelationship and autonomy. Conclusion: The improvement of the school's organizational climate can reduce the level of workplace violence and discrimination against health teachers. It is important to establish an appropriate evaluation system for health teachers and to recognize the role and expertise of health teachers. In addition, it is necessary for school administraters to actively support health teahcers and to create an organizational climate where they can be friendly and communicative.

위성자료(NOAA, Topex/Poseidon)를 이용한 한반도 주변해역의 기후적 특성 (On Climatic Characteristics in the East Asian Seas by satellite data(NOAA, Topex/Poseidon))

  • 윤홍주
    • 한국환경과학회지
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    • 제10권6호
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    • pp.423-429
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    • 2001
  • Satellite data, with sea surface temperature(557) by NOAA and sea level(SL) by Topex/poseidon, are used to estimate characteristics on the variations and correlations of 557 and SL in the East Asian Seas from January 1993 through May 1998. We found that there are two climatic characteristics in the East Asian seas the oceanic climate, the eastern sea of Japan, and the continental climate, the eastern sea of China, respectively. In the oceanic climate, the variations of SL have the high values in the main current of Kuroshio and the variations of 557 have not the remarkable seasonal variations because of the continuos compensation of warm current by Kuroshio. In the continental climate, SL has high variations in the estuaries(the Yellow River, the Yangtze River) with the mixing the fresh water and the saline water in the coasts of continent and 557 has highly the seasonal variations due to the climatic effect of continents. In the steric variations of summer, the eastern sea of Japan, the East China Sea and the western sod of Korea is increased the sea level about 10~20cm. But the Bohai bay in China have relatively the high values about 20~30cm due to the continental climate. generally the trends of SST and SL increased during all periods. That is say, the slopes of 557 and SL Is presented 0.29$^{\circ}C$/year and 0.84cm/year, respectively. The annual and semi-annual amplitudes have a remarkable variations in the western sea of Korea and the eastern sea of Japan. In the case of the annual peaks, there appeared mainly In the western sea of Korea and the eastern sea of .Japan because of the remarkable variations of SL associated with Kuroshio. But in the case of the semi-annual peaks, there appeared in the eastern sea of Japan by the influence of current, and in the western sea of Korea by the influence of seasonal temperature, respectively. From our results, it should be believed that 557 and SL gradually Increase in the East Asian seas concerning to the global warming. So that, it should be requested In the international co-operation against In the change of the abnormal climate.

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기후변화의 영향평가를 위한 대순환모형과 지역기후모형의 비교 연구 (A Comparative Study on General Circulation Model and Regional Climate Model for Impact Assessment of Climate Changes)

  • 이동근;김재욱;정휘철
    • 환경영향평가
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    • 제15권4호
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    • pp.249-258
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    • 2006
  • Impacts of global warming have been identified in many areas including natural ecosystem. A good number of studies based on climate models forecasting future climate have been conducted in many countries worldwide. Due to its global coverage, GCM, which is a most frequently used climate model, has limits to apply to Korea with such a narrower and complicated terrain. Therefore, it is necessary to perform a study impact assessment of climate changes with a climate model fully reflecting characteristics of Korean climate. In this respect, this study was designed to compare and analyze the GCM and RCM in order to determine a suitable climate model for Korea. In this study, spatial scope was Korea for 10 years from 1981 to 1990. As a research method, current climate was estimated on the basis of the data obtained from observation at the GHCN. Future climate was forecast using 4 GCMs furnished by the IPCC among SRES A2 Scenario as well as the RCM received from the NIES of Japan. Pearson correlation analysis was conducted for the purpose of comparing data obtained from observation with GCM and RCM. As a result of this study, average annual temperature of Korea between 1981 and 1990 was found to be around $12.03^{\circ}C$, with average daily rainfall being 2.72mm. Under the GCM, average annual temperature was between 10.22 and $16.86^{\circ}C$, with average daily rainfall between 2.13 and 3.35mm. Average annual temperature in the RCM was identified $12.56^{\circ}C$, with average daily rainfall of 5.01mm. In the comparison of the data obtained from observation with GCM and RCM, RCMs of both temperature and rainfall were found to well reflect characteristics of Korea's climate. This study is important mainly in that as a preliminary study to examine impact of climate changes such as global warming it chose appropriate climate model for our country. These results of the study showed that future climate produced under similar conditions with actual ones may be applied for various areas in many ways.

노인의 기후변화 불안감이 생활만족도에 미치는 영향과 주관적 건강의 매개효과 (Effect of Anxiety about Climate Change on Life Satisfaction and Mediating Effect of Subjective Health Status)

  • 이성은
    • 한국환경보건학회지
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    • 제45권3호
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    • pp.267-272
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    • 2019
  • Objectives: The purpose of this study was to examine effect of anxiety about climate change on life satisfaction and mediating effect of subjective health status between anxiety about climate change and life satisfaction among older persons. Methods: This study used data from Statistics Korea 2018 Social Survey and a total of 7,870 older persons aged 65 and over were selected for the analyses. Descriptive statistics was used to identify characteristics of study participants and correlation analysis was used to examine the associations among anxiety about climate change, subjective health status, and life satisfaction. Also, multiple regression analyses were performed to examine effect of anxiety about climate change on life satisfaction and mediating effect of subjective health status between anxiety about climate change and life satisfaction. Results: Study findings show that anxiety about climate change had significant effect on life satisfaction. A higher level of anxiety decreased the level of life satisfaction of the elderly. A higher level of anxiety about climate change also decreased the level of subjective health status. In addition, the effect of anxiety about climate change on life satisfaction was partially mediated by subjective health status. Conclusions: Findings of the study suggest that the needs of older population should be considered in designing policy and interventions on climate change.