• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2008년도 춘계학술발표대회 논문집
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• pp.160-165
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• 2008

The concern in energy reduction in the field of architecture which takes up a big weight in domestic energy consumption is gradually increasing. For this reason, a lot of research work on this matter is being carried out. Particularly, it is generally required that currently used system in a structure for energy reduction should be maximized in its efficiency. In addition, research on several energy reduction typed systems is underway. Such a research work should not only include the one in time of the present but also keep up with the trend for future-oriented research. This research paper forecasted and analyzed the trend for global warming and demand of a structure for energy in the future by applying climate scenarios to cooling degree-day and heating degree-day. Also, this research found out the decrease in heating degree-days and increase in cooling degree-days until this moment due to the progress of global warming. In addition, as for heating degree-days in the future forecasted on the basis of HadCM3, it is estimated that the range of decrease could be ever bigger starting 2040 in case of Seoul and also starting 2010 in case of Ulsan ever after respectively. In case of cooling degree-days, it is estimated that its increase range could be bigger abruptly starting 2050, and after 2080, its increase range would be much bigger.

• 대기
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• 제16권4호
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• pp.333-342
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• 2006

The long-term trends of global solar irradiance, air temperature, specific humidity and cloudiness measured at King Sejong station, Antarctica, during the period of 1988-2004, have been investigated. A statistically insignificant decrease, -0.21 $Wm^{-2}yr^{-1}$ (-0.26 %$yr^{-1}$, P<0.5) in global solar irradiance was found in an analysis from the time series of the monthly mean values, except for the increasing trends only in two months of January and June. The trends in irradiance are directly and inversely associated with the cloudiness trends in annual and monthly means. The trends in surface air temperature show a slight warming, $0.03^{\circ}Cyr^{-1}$ (1.88 %$yr^{-1}$, P<0.5) on the annual average, with cooling trend in the summer months and the warming in the winter. The exact relationship, if any, between the irradiance and temperature trends is not known. No significant tendency was found in specific humidity for the same periods. Recent (1996-2004) erythermal ultraviolet irradiance shows decreasing trend in annual mean, -0.15 $mWm^{-2}yr^{-1}$ (-1.18 %$yr^{-1}$, P<0.1) which is about five times the trends of global solar irradiance. The ratio of erythermal ultraviolet to global solar irradiance shows remarkable seasonal variations with annual mean value of 0.01 % and a peak in October and November, showing the increase of ultraviolet irradiance resulting from the Antarctic ozone hole. The sensitivity of global solar irradiance to the change in cloudiness is roughly $13%oktas^{-1}$ which is about twice of the value at the South Pole due to the difference in the average surface reflectance between the two stations. Much more sensitive values of $59%oktas^{-1}$ was found for erythermal UV irradiance than for the global solar irradiance.

• Fisheries and Aquatic Sciences
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• 제26권11호
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• pp.639-648
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• 2023

The sea surface temperature (SST) and ocean heat content in the Korea Waters are gradually increased. Especially the increasing trend of annual mean SST in the Korea Water is higher about 2.6 times than the global mean during past 55 years (1968-2022). Before 2010s, the increasing trend of SST was led by winter season in the Korea Waters. However, this pattern was clearly changed after 2010s. The increasing trend of SST during summer is higher about 3.9 times than during winter after 2010s. We examine the long-term variations of several ocean and climate factors to understand the reasons for the long-term pattern changes of SST between summer and winter in recent. Tsushima warm current was significantly strengthened in summer compare to winter during past 33 years (1986-2018). The long-term patterns of Siberian High and East Asian Winter Monsoon were definitely changed before and after early- or mid-2000s. The intensities of those two climate factors was changed to the increasing trend or weakened decreasing trend from the distinctive decreasing trend. In addition, the extreme weather condition like the heatwave days and cold spell days in the Korea significantly increased since mid- or late-2000s. From these results, we can consider that the occurrences of frequent and intensified marine heatwaves during summer and marine cold spells during winter in the Korea Waters might be related with the long-term pattern change of SST, which should be caused by the long-term change of climate factors and advection heat, in a few decade.

• 한국실내디자인학회논문집
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• 제20권5호
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• pp.78-86
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• 2011

The world is suffered from severe environmental problems such as climate change and global warming due to radical industrialization after the Industrial Revolution. With advancement of science and information technologies, national borders have become meaningless. In this global trend, movable exhibition shall be supposed to pursue "Local in Global." Thus, movable exhibition should get involved in an effort to find a cultural identity in the globalization and to better our position among the various cultures. As an alternative, movable exhibition can be established by combining biomimicry, which is biomimicry of life by imitating biological system, with Flexibility of movable space. By providing a hint to environmental problems and cultural uncertainty, this alternative will generate an advanced exhibition trend that is more environmental-friendly and more efficient. As a cumulative concept created by the nature for 3.8 billion years, biomimicry has evolved a lot more than the modern science. By catching this point, "A study on flexibility of movable exhibition through biomimicry notion" is providing a revolutionary paradigm stepping beyond the current exhibition trend, which pursues coexistence of human beings and the nature and, at the same time, introduces our culture.

• Journal of Forest and Environmental Science
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• 제25권2호
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• pp.131-138
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• 2009

Recently, various efforts for the extended utilization of woody biomass has been attempted due to the fact that global warming, energy and environmental problems are urgent ones to be solved. Development of new energy sources at our national security level is desperately needed as we depend on almost all of energies supplied from other countries, let alone the economic crisis caused by oil price hike. Woody biomass can be converted to energy by means of thermochemical, biological, or direct combustion processes. Many processes are available for producing bioenergy, such as bioethanol, wood pellet, wood chip, combined heat, and power system. Political support and R&D investment should be provided that can boost the utilization of the wood biomass, the eco-environment, and recyclable and alternative energy resources for national power security. In addition, a long-term strategy that can utilize unused and low efficient woody biomass resources, and systematically collect and manage them in a national level should be set up. Even though the possibility in total exchange of fossil oil with woody biomass is quite low, technology developments of woody biomass for the solution to global warming and environmental problem through its commercialization are expected to grow steadily.

• 대한지리학회지
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• 제41권1호
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• pp.94-105
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• 2006

본 연구에서는 우리나라의 여름과 겨울철의 이상기온 출현 빈도의 변화와 그에 영향을 미치는 요인과의 관계를 파악하고자 하였다. 우리나라의 대부분 관측 지점에서는 여름철 이상고온 출현 빈도의 증가와 겨울철 이상저온 출현 빈도의 감소 경향이 뚜렷하다. 이러한 이상기온 출현 빈도의 변화는 대기 순환 지수 중 겨울철 이상기온 출현에 영향을 미치는 겨울 몬순 지수와 시베리아 고기압 강도 지수 및 북극 진동 지수, 그리고 여름철 이상저온 출현에 영향을 미치는 오호츠크해 고기압 강도 지수와 북태평양 지수 등의 변화 경향과 유사하다. 이 지수들은 이상기온의 변화에 영향을 미치는 요인 중 최근의 지구 온난화 경향을 반영하며 우리나라 전 지역의 이상기온 출현 빈도와 관계가 뚜렷하다.

• Asian Journal of Atmospheric Environment
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• 제9권3호
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• pp.194-204
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• 2015

This study analyzed a change trend of ambient temperature over the last sixty years in the largest industrial city in Korea, Ulsan. Linear warming rates in Ulsan over the last 25 (1985 to 2009), 40 (1970 to 2009), and 60 (1950 to 2009) years were 0.0507, 0.0416, and $0.0277^{\circ}C/yr$, respectively. The annual average temperature (AAT) and the annual average of the daily lowest temperature (AADLT) in Ulsan increased 1.3 and $2.9^{\circ}C$, respectively, over the last fifty years (1960 to 2009). The increasing slopes of the AAT and AADLT over the fifty years in Ulsan were higher or much higher than those in neighboring cities and on a global scale. In the comparison analysis of daily average temperature over the most recent ten years, the highest ($15.9^{\circ}C$) was observed in the industrial area followed by the downtown, coastal, suburban, and rural areas with 14.6, 14.5, 14.0, and $12.8^{\circ}C$, respectively. The number of cold days less than $5.0^{\circ}C$ decreased, while the number of hot days higher than $20.0^{\circ}C$ increased. The decreasing slopes in the cold days in lower latitude cities were steeper than those in higher latitude cities in Korea.

• 한국정보통신학회논문지
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• 제12권12호
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• pp.2265-2270
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• 2008

최근 대두 되고 있는 지구 온난화 및 기후 변화와 관련해서 수온이 해양 생태계에 미치는 영향을 알기 위하여 한반도 주변 해역을 중심으로 $1988{\sim}2000$년까지 NOAA SST자료를 활용하여 어류 회류의 변동성에 대하여 조사하였다. 위성자료를 분석해 본 결과 우리나라는 전반적으로 온난화 경향이 나타나고 있다. 연근해의 수온상승과 비교해 볼 때, 오징어, 멸치, 정어리, 꽁치 등 회유성 어종의 분포해역이 점차 북상하고 있는 것으로 나타났다. 또한 난류성 어종인 오징어와 멸치의 어획량은 증가한 반면, 한류성 어종인 꽁치와 정어리는 감소하는 경향을 보였다. 그러나 어황에 영향을 미치는 요인에는 수온뿐만 아니라 염분 및 오염도 등 여러 가지 요소가 존재하기 때문에 수온상승으로 인해 생기는 어황의 변화라고 단정 짓기는 어렵다. 따라서 금후 기후 변동과 연근해 어황 변화에 대해서도 계속적인 연구가 필요하다.

• International Journal of Advanced Culture Technology
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• 제11권2호
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• pp.330-344
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• 2023

This research report cuts across management sciences (market strategy entry mode development) and innovative technology (Electric Vehicle (EV)) alongside measures to submerge global warming. The development of a successful entry mode for the electric Vehicle into the African continent is the main objective of the study. The study focuses on an analysis of how electric car manufacturers can enter the African market in other to achieve global sustainability and social responsibility. The methodology is based on identifying the factors that affect the choice of an entry mode into international markets by multinational companies desiring to leverage their revenue through a foreign market. It also offered a quantitative approach that can support the economic and sustainability entry mode model for EVs and a qualitative approach of Porter's five forces analysis as an entry mode coaching tool for EVs. These proxies are used in quite a wide range of multivariate statistical methods (trend analysis, ratio, and probability, comparative t-test technique, auto-regression, and ordinary least square technique). The result acknowledges joint venture and setting of the plant (physical presents) as the optimal entry mode in African EV market. It requires the EV manufacturers a tire-free emission innovation technology in order to optimize the global sustainability initiative.

• 대기
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• 제33권5호
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• pp.505-517
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• 2023

This study investigates the impacts of carbon neutrality and air quality control policies on near-term climate change in East Asia, by examining three Shared Socioeconomic Pathways (SSPs) scenarios from five climate models. Specifically, low carbon and strong air quality control scenario (SSP1-1.9), high carbon and weak air quality control scenario (SSP3-7.0), and high carbon and strong air quality control scenario (SSP3-7.0-lowNTCF) are compared. For these scenarios, the near-term climate (2045-2054 average) changes are evaluated for surface air temperature (SAT), hot temperature extreme intensity (TXx), and hot temperature extreme frequency (TX90p). In all three scenarios, SAT, TXx, and TX90p are projected to increase in East Asia, while carbon neutrality reduces the increasing rate of SAT and hot temperature extremes. Air quality control strengthens the warming rate. These opposed mitigation effects are robustly forced in all model simulations. Nonetheless, the impact of carbon neutrality overcomes the impact of air quality control. These results suggest that fast carbon neutrality, more effective than an air quality control policy, is necessary to slowdown future warming trend in East Asia.