• Title/Summary/Keyword: The global warming

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Record-breaking High Temperature in July 2021 over East Sea and Possible Mechanism (2021년 7월 동해에서 발생한 극한 고온현상과 기작)

  • Lee, Kang-Jin;Kwon, MinHo;Kang, Hyoun-Woo
    • Atmosphere
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    • v.32 no.1
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    • pp.17-25
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    • 2022
  • As climate change due to global warming continues to be accelerated, various extreme events become more intense, more likely to occur and longer-lasting on a much larger scale. Recent studies show that global warming acts as the primary driver of extreme events and that heat-related extreme events should be attributed to anthropogenic global warming. Among them, both terrestrial and marine heat waves are great concerns for human beings as well as ecosystems. Taking place around the world, one of those events appeared over East Sea in July 2021 with record-breaking high temperature. Meanwhile, climate condition around East Sea was favorable for anomalous warming with less total cloud cover, more incoming solar radiation, and shorter period of Changma rainfall. According to the results of wave activity flux analysis, highly activated meridional mode of teleconnection that links western North Pacific to East Asia caused localized warming over East Sea to become stronger.

Influence of the Global Warming in Domestic Construction Schedules (지구온난화가 국내 건설 공기에 미치는 영향에 관한 연구)

  • Chae, Hee-Mann;Cho, Sung-Woo;Yang, Chang-Hyun;Son, Chi-Soo;Kim, Kyung-Hwan;Kim, Jae-Jun
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2007.11a
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    • pp.567-570
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    • 2007
  • Recent changes of the climate, which caused by global warming, have much effect world-widely. Korea also has struggled with these kinds of weather problems, and construction industry couldn't get away with them, either. However, the research, regarding to these problems, has not been quite settled, yet. Therefore, this study is to find out how the global warming can affect construction periods. As a result, we could recognize that changes of climate, which caused by global warming, also affects non-working days, too. This study is expected to be used as the data to find out the relationship between weather changes and domestic construction industry in the future.

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Analysis on Changes, and Problems in Phonology of Butterflies in Gwangneung Forest (광릉 숲 나비류의 생활주기 변화분석 및 문제점)

  • Kwon, Tae-Sung;Byun, Bong-Kyu;Kang, Seung-Ho;Kim, Sung-Su;Lee, Bong-Woo;Kim, Young-Kul
    • Korean journal of applied entomology
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    • v.47 no.3
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    • pp.209-216
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    • 2008
  • In order to find phenological change of butterflies due to global warming, we analyzed weekly monitoring data of butterfly at Gwangneung forest in 1958 and 2004. It was tested whether the timing of first flight and mean flight of butterflies in 2004 became earlier due to global warming compared with those in 1958 and whether the duration of flight period became longer. No significant difference was found in timing of first flight and in duration of flight period between 1958 and 2004. Furthermore, species showing delayed timing of mean flight was more abundant than species showing earlier timing of mean flight. Hence, the results do not confirm the predicted changes of phonology due to global warming. We discussed reasons on the non-apparent phenological changes despite the increase of temperature, and the problems and solutions in butterfly study on Korean butterfly fauna in utilization of butterflies as indicator for global warming.

Impact of Climate Change on the Ocean Environment in the Viewpoint of Paleoclimatology (기후변화가 해양에 미친 영향: 고기후학의 관점에서)

  • Yi, Hi-Il;Shin, Im Chul
    • Atmosphere
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    • v.20 no.3
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    • pp.379-386
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    • 2010
  • Impact of global warming on the ocean environment is reviewed based on most recently published publications. The most significant impact of global warming on marine environment is due to the melting of mountain and continental glaciers. Ice melting causes slow down and/or shut down of thermohaline circulation, and makes hypoxic environment for the first time, then makes anoxic with time. This can cause decreasing biodiversity, and finally makes global extinction of animals and plants. Furthermore, global warming causes sea-level rise, soil erosion and changes in calcium carbonate compensation depth (CCD). These changes also can make marine ecosystem unstable. If we emit carbon dioxide at a current rate, the global mean temperature will rise at least $6^{\circ}C$ at the end of this century, as predicted by IPCC (Intergovernmental Panel on Climate Change). In this case, the ocean waters become acidic and anoxic, and the thermohaline circulation will be halted, and marine ecosystems collapsed.

Review of Clinical Trials on Warming Acupuncture for Musculoskeletal Pain Diseases -A Systematic Review- (근골격계 통증성 질환에 대한 온침의 임상 연구 고찰 -계통적 고찰-)

  • Chung, Jie-Youn;Choi, Do-Young;Woo, Hyun-Su;Kang, Sung-Keel
    • Journal of Acupuncture Research
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    • v.26 no.4
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    • pp.11-18
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    • 2009
  • Objectives : The objective of this review was to evaluate clinical trials of warming acupuncture for musculoskeletal pain diseases, to assess the methodologic quality of the trials and determine whether low-quality trials are associated with positive outcomes, to document adverse effects and to identify the effectiveness of the warming acupuncture. Methods : Seven databases and the Journal ZHONGGUO ZHENJIU(中國鍼灸) published between 2004-2008 were searched. Korean and Chinese randomized trials were evaluated for methodologic quality using the modified Jadad scale. Outcome measurements were pain, function and global improvement. The best-evidence synthesis was performed to determine the strength of evidence by control group. Results : Six clinical trials representing 564 patients with musculoskeletal pain diseases were identified. For pain and function, there was moderate evidence that warming acupuncture is more effective than manual acupuncture. For patient global assesment, there was limited evidence that warming acupuncture is more effective than manual acupuncture. However, for function, there was inconclusive evidence that warming acupuncture is more effective than acupuncture with TDP or western medicine or acupoint-injection treatment. Conclusions : The evidence suggests that warming acupuncture is more effective for musculoskeletal pain diseases than manual acupuncture, acupuncture with TDP, western medicine and acupoint-injection treatment. But the evidence is moderate to inclusive due to the low methodologic quality of the trials. Further clinical trials with high methodologic quality is required to investigate the effectiveness of warming acupuncture.

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Alternate Energy: Gravity Powered Rail Transportation Systems

  • Bojji, Rajaram
    • International Journal of Railway
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    • v.2 no.1
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    • pp.22-29
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    • 2009
  • A simple pendulum shows how efficient gravity is in recovering energy. Any transportation is a linearly oscillating system; every load gains kinetic energy, but loses the same to come to a stop. The Gravity Power Towers comprise of a set of vertically moving heavy masses coupled, through microprocessor controlled continuously variable gear and cable system, to a horizontally rolling unit on wheels either on rail or road. The heavy masses move vertically up against gravity gaining potential energy while stopping a moving mass; move down under gravity force, giving out energy. The Tower thus accelerates or sustains the speed a rolling unit, and while decelerating, recover the kinetic energy. Speeds of 360 kmph can be attained. Recovery of energy varies from 98.5-70%; the longer the distance between stops, the lesser is recovery. The economical, omnipresent & eternal Gravity Power grants energy independence to many a nation. Global warming reduces.

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Global warming effect Comparison of each material for railway vehicle (철도차량 차체재료별 온실가스발생량 비교)

  • Lee, Cheul-Kyu;Kim, Yong-Ki;Phirada, Pruitichaiwiboon
    • Proceedings of the KSR Conference
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    • 2009.05a
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    • pp.219-222
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    • 2009
  • Green ocean is one of the main issues internationally. Most governments are leading the role in boosting the economy through creating new green market and establishing system of coping with increasing international environmental regulation. Green ocean, which is a solution for the environmental issue of global warming, is applied throughout the industry. Domestic transportation industry including railway is also developing technology for creating green ocean. Transportation must decrease energy consumption at running stages because it shows high environmental loads expecially on using stages during its life cycle. Therefore, There are some tries for developing technologies; new engine through alternative energies, hybrid and lightweight. Railway transportation can not be exception. it is intended for this paper to suggest the direction of manufacturing environmentally friendly railway vehicle through the global warming effect evaluation of several materials being applied to vehicle and comparison of the results.

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Estimation of Global Warming by Coupled Atmosphere-Ocean GCM (대기/해양 접합 GCM을 이용한 지구 온난화의 추정)

  • Kim Jeong-Woo;Park Ji-Up
    • 한국전산유체공학회:학술대회논문집
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    • 2000.05a
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    • pp.14-19
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    • 2000
  • A coupled general circulation model (GCM) of the global atmosphere, oceans and lands is used for finding the future climate at times of doubled carbon dioxide concentration (DCDC) of the atmosphere. Two runs of the model were made in order to find the future change. Global changes at times of DCDC may be characterized by a global warmig of $1.4^{\circ}C$, a $3\%$ global precipitation increase, and an increase in the surface available water (SAW) over the global land among others. The estimated increase in SAW over the land implies that river discharge is likely to increase with increased chance of severe weather as a result of the future global warming.

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Emission Control Technologies for N2O from Adipic Acid Production Plants (아디픽산 제조공정으로부터 발생되는 N2O에 대한 배출제어기술)

  • Kim, Moon-Hyeon
    • Journal of Environmental Science International
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    • v.20 no.6
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    • pp.755-765
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    • 2011
  • Nitrous oxide ($N_2O$) is one of six greenhouse gases listed up in the Kyoto Protocol, and it effects a strong global warming because of its much greater global warming potential (GWP), by 310 times over a 100-year time horizon, than $CO_2$. Although such $N_2O$ emissions from both natural and anthropogenic sources occur, the latter can be controlled using suitable abatement technologies, depending on them, to reduce $N_2O$ below acceptable or feasible levels. This paper has extensively reviewed the anthropogenic $N_2O$ emission sources and their related compositions, and the state-of-the-art non-catalytic and catalytic technologies of the emissions controls available currently to representative, large $N_2O$ emission sources, such as adipic acid production plants. Challengeable approaches to this source are discussed to promote establishment of advanced $N_2O$ emission control technologies.