간행물
기후연구 KCI 등재 Journal of Climate Research
- 발행기관 건국대학교 기후연구소
- 자료유형 학술지
- 간기 계간
- ISSN 1975-6151 (Print)2288-8772 (Online)
- 수록기간 2006 ~ 2021
- 주제분류 사회과학 > 지리학 사회과학 분류의 다른 간행물
- 십진분류KDC 453DDC 551
권호리스트/논문검색
제9권 제1호 (2014년 3월) 6건
1.
2014.03
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The geographical distributions of CDDs and HDDs in South Korea for the period 2000~2009 with 2050~2059 are studied by using daily mean temperature data with 1 km horizontal resolution estimated by MK (Modified Korean)-PRISM (Parameter-elevation Regressions an Independent Slopes\ Model) driven by the IPCC (Intergovernmental Panel on Climate Change) RCP (Representative Concentration Pathways)2.6/8.5. The HDD amounts in winter season decrease, declining from north to south and from the high mountain area to the coastal area. In summer season, the higher fuel consumption appears in urban areas, with much higher CDD amounts and for a longer period of time. In the mid-century under RCP2.6 (RCP8.5), HDDs are projected to decrease by 13% (16%) while CDDs are likely to increase by 36% (51%). The total length of cooling (heating) period in Korea is projected to increase (decrease) due to the advance (delay) of the beginning date and the delay (advance) of the end date. These results suggest that special attention should be paid to space cooling, since the cooling demand is expected to grow rapidly in most regions except for mountainous areas. The projection of future CDDs and HDDs will be useful for various energy projects and other environmental applications.
2.
2014.03
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Agreement in the vertical profiles of the temperature trends from radiosonde observation (HadAT) and four kinds of reanalysis dataset (ERA40, ERA-I, NCEP-DOE, and 20CR) are examined for the period of 1979-2000. There are noticeable spread among reanalysis and observation datasets in the temperature trend depending on region and vertical level. East Asia shows large discrepancy among datasets, while Europe shows relatively good agreement. Generally, biases in temperature trends are larger in the upper troposphere (above 300 hPa) than in the lower and middle troposphere. Comprehensive comparison of the long-term temperature trends among reanalyses is made for horizontal distributions with height, latitude-pressure cross-sectional distributions, zonally-averaged meridional distributions with height, and area-averaged vertical profiles in both DJF and JJA. Consequently, we find that the degree of agreement among reanalyses significantly varies with vertical level, region, and season. The highest discrepancy is found over southern high-latitudes and in the upper troposphere over southern tropics. In the tropical upper troposphere above 200 hPa, observation (HadAT) shows cooling trend increases with height, but three reanalyses show warming trends except NCEP-DOE reanalysis in which cooling trend is overestimated. In conclusion, discrepancies in the vertical profiles of long-term temperature trends among four kinds of reanalysis datasets are quite large, and then a scrupulous approach should be needed when reanalysis dataset is used for climate change study.
3.
2014.03
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Future changes in mineral dust emission are studied using CMIP5 models. These models simulate climatological spatial distribution of dust emission over the observed major sources; Sahara Desert to Arabia and Southwest Asia. Model estimates for the range of global dust emission simulation appear large in the quantity of dust produced and the amplitude of interannual variability. According to the ensemble mean in global annual emissions, projections of four RCPs do not have significant long-term trends in mineral dust aerosol emissions at the end of 21st century. Meanwhile over Northeast Asia, annual emissions are projected to decrease significantly in four RCPs. Reductions appear over the major sources of mineral dust. Seasonally emission reduction in spring is distinct. In April and May, future changes with decreasing emission appear only in RCP4.5 with significance. Aerosol emission amount changes are related to changes in land surface property. We analyze future projection of soil moisture and bare soil area fraction. Regarding the projected decreasing trend in the annual emission amount over Northeast Asia, soil moisture is expected to increase in the emission source region in four RCPs. Relatively, the effect of bare soil area changes over the emission source appears in some models and RCPs.
4.
2014.03
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Corydalis cornupetala is one of annual herbaceous species and belongs to Corydaceae. This spring ephemeral plant is also one of the Korean endemic plant species and ranged only at the
Gyaejeongsub(woodland) in Gyeongsan City. The overall researches to this species due to limited distribution and life strategy has highly significant. The present study is to support the habitat conservation including single recovery plan based on information of site characteristics of the habitat, and flowering characteristics. The wild habitat of Corydalis cornupetala is typically ranged at 70m HSL with silt sandy loam on the southeast gently slope. The flowering time was slightly different by the year; 18 March in 2011, 6 March in 2012 and 8 March in 2013. The flowering period was gradually increased in the recent three years; 19 days in 2011, 29.2 days in 2012 and 32 days in 2013. The habitat of Corydalis cornupetala should be managed both by in situ and ex situ conservation. Regarding to this, the clear evidence is remained as individual number was gradually decreased as 186.51 in 2011, 182.64 in 2012 and 160.24 in 2013.
5.
2014.03
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Recent years, there is increasing demand for seedlings of Daphniphyllum macropodum. However, the bare-root nursery of the species has been reported to be challenging due to meteorological disasters caused by climate change. The study aims to investigate the appropriate levels of shade and fertilization of container-grown D. macropodum, which has shade tolerance in seedling stage. The shading treatment was regulated with the shading level of full sun, and 35%, 55%, 75% of full sun. The fertilizing level was made by regulating Multifeed 19 (N:P:K =19:19:19, v/v) with 1000mg·L-¹, 2000mg·L-¹, 3000mg·L-¹, together with the control. The height was indicated to be the highest in 3000mg·L-¹ under 55% of shading. The root collar diameter was surveyed to be the highest in 1000mg·L-¹ and 3000mg·L-¹ of full sun. A case of the whole dry mass production was surveyed to be the highest in 3000mg·L-¹ under 55% of shading and 2000mg·L-¹ under 35% of shading. Moreover, the study is to explore the possibility of production and sound growth of D. macropodum seedlings by container nursery; consequently, the result is expected to provide the production method of the seedlings of D. macropodum that is to overcome meteorological disasters from bare-root nursery.
단보
6.
2014.03
서비스 종료(열람 제한)
Climate change is not only abnormal condition of climate systems but also the perplexities of socio-economic system including agriculture, ocean, energy supply plans and ecosystem. As the frequency and magnitude of the extreme weather related natural disasters are increasing, the losses of lives and economic damages are getting huge. For the adequate response of climate change, more comprehensive reviews of research results about observation, projection and monitoring of climate change are essential. The purpose of this study is to frame, to structure and to prepare writing strategies the 2nd Korea Climate Change Assessment Report(the Physical Science Basis). ‘Korea Climate Change Assessment Report 2010’ was prepared using 1,003 references by 46 climate change scientists with seven chapters and 328 pages. Ten chapters and more detailed sections for the 2nd Korea Climate Change Assessment Report have been suggested based on IPCC 5th Climate Change Assessment Report. Chapters cannot be changed while sections can be combined, deleted, and altered with admissions from consultation committees. Committees consist of climate change experts from government organization, universities and institution.
