• Title, Summary, Keyword: global warming

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Effects on Concepts on Global Warming, Practical Will and Belief on Global Warming Mitigation of Elementary School Students by Experiments Based on Global Warming Program (실험 중심 지구온난화 프로그램이 초등학생들의 지구온난화 개념, 행동의지 및 신념에 미치는 효과)

  • Byun, Moon-Hee;Shin, Ae-Kyung
    • Journal of Korean Elementary Science Education
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    • v.32 no.4
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    • pp.452-463
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    • 2013
  • The purpose of this study was to identify the effectiveness of concepts on global warming, practical will and belief on global warming mitigation by experiments based on global warming program. For this study, 60 $6^{th}$ grade students were selected in two elementary schools. They were divided into an experimental group and a control group. The students of the experimental group took part in global warming program focusing experiments for 10 lessons during 2 weeks. The students of the control group were taught according to the regular curriculum of $6^{th}$ grade about global warming. To identify the effects of this program, both groups' students were tested on concepts on global warming, practical will and belief on global warming mitigation before and after the program implementation. Also the students of the experimental group wrote an essay and gave an interview about the program after implementation. The results were that the experimental group gained higher scores than the control group in the concepts on global warming. The programs improved students' practical will and belief on global warming mitigation. Also this program showed that the students systematically understood on global warming than existing classes in the regular curriculum.

Effect on the Environmental Attitude and Knowledge Accomplishment of Elementary Students by Educational Programs about Global Warming (지구 온난화 교육 프로그램이 초등학생의 환경적 태도와 환경적 지식 성취도에 미치는 효과)

  • Kim, Yong-Guen;Kim, Jeong-In
    • Hwankyungkyoyuk
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    • v.21 no.2
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    • pp.11-24
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    • 2008
  • This research verifies the effect on environmental attitude and knowledge accomplishment by t-test as producing and running programs regarding global warming which is raised as a representative environmental issue subject to 6th grade-elementary students. For this, environmental education programs about global warming for elementary students are developed and applied 15 times by reconstituting classes based on the contents regarding global warming from the text books revised as of 7th course of study. The result is as below. First, some part of contents from social study and science of 6th grade elementary curriculum of 7th course of study was able to be reconstituted to 15 education programs. Secondly, the programs about global warming improved students' environmental attitude Application of the programs about global warming showed significant difference(p<.05) on building environmental attitude as it proved those are effective on both area of recognition level and practice level. The method used on the test had .866's Cronbach alpha modulus value therefore, it obtained reliability. Thirdly, the programs regarding global warming improved students' knowledge accomplishment. As a result of test for knowledge accomplishment which was executed with same method for attitude test, the application of the programs about global warming showed significant difference(p<.05) on improving students' knowledge accomplishment on the global warming therefore, it resulted that the application of the program is effective on knowledge acquirement.

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The Elementary and Middle School Students' Perceptions of Global Warming and Climate Change (초·중학생의 지구온난화와 기후변화에 대한 인식)

  • Lee, Ji Sook;Park, Hye Gyeong;Cheong, Cheol
    • Journal of Science Education
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    • v.35 no.2
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    • pp.274-282
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    • 2011
  • The purpose of this study was to investigate elementary and middle school (grade 5 and 7) students' perceptions of global warming and climate change. A total of 239 students completed opened-form questionnaire consisting of cartoons regarding global warming and climate change. The results showed that are as follows. Elementary and middle school students had low level of perception of global warming and climate change. A majority of students rightly believed that the global warming is related to greenhouse gases, glacier, environmental pollution, etc. Also, Many students had scientific concepts about the cause of global warming while some of the students had misconceptions that destruction of the ozone layer will cause an global warming. We have found that some of the students of elementary and middle school had confused between the cause of global warming and ozone depletions.

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Effect of Elevated CO2 Concentration and Temperature on the Growth and Ecophysiological Responses of Ginseng (Panax ginseng C. A. Meyer) (CO2농도와 온도증가에 따른 인삼의 생육 및 생리.생태학적 반응 연구)

  • Lee, Kyoung-Mi;Kim, Hae-Ran;Lim, Hoon;You, Young-Han
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.57 no.2
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    • pp.106-112
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    • 2012
  • In order to understand the growth and ecophy -siological response of ginseng to global warming condition, we cultivated one and two year ginseng seedlings in control (ambient $CO_2$ + ambient temperature) and global warming treatment (elevated $CO_2$ + elevated temperature) from March 2010 to July 2011. Shoot appearance and initiation of flowering were advanced by 3-4 days in global warming treatment than in control. However, timing of fruit setting and seed ripeness was similar in both control and global warming treatment. Shoot length was longer in global warming treatment than in control, and also the number of leaves was much in global warming treatment. Fresh root weight was not different between control and global warming treatment. Photosynthetic rate was higher in global warming treatment than at control. Photosynthetic rate and transpiration rate were higher in two year seedlings than in one year seedlings at control, but was not different between seedling age of ginseng in global warming treatment. Water use efficiency was higher in one year seedlings than two year seedlings at control and global warming treatment. These results demonstrated that Korean ginseng more or less positively responds to global warming situation.

The Development of the Elementary Environmental Education Textbook Relevant to Global Warming based on Responsibility Ethics - Focused on 5th, 6th Grade Students - (책임윤리학에 기초한 지구온난화 관련 초등 환경교육 교재 개발 - 초등학교 5, 6학년을 중심으로 -)

  • Jeong, Ha-Na;Chi, Chun-Ho;Lee, Sang-Won
    • Hwankyungkyoyuk
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    • v.22 no.3
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    • pp.31-48
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    • 2009
  • The purpose of this study is to develop the elementary environmental textbook relevant to global warming based on responsibility ethics. To achieve the purpose, concrete study processes are as follows. First, the theory of responsibility ethics of Jonas was analyzed. Second, contents relevant to global warm ing on textbooks and guide books in the 7th elementary curriculum was analyzed through reference study. Third, the environmental textbook relevant to global warming for 5th and 6th grade in the elementary school was developed which was based on responsibility. The results of this study are as follows. First, responsibility ethics of Jonas has a lot of merit if it is applied to environment education. Second, according to the analysis into textbooks and guide books in the 7th elementary curriculum, the contents concerning global warming are very poor in both quantity and quality. Third, the elementary environmental textbook relevant to global warming for 5th and 6th grade students was developed. This textbook based on responsibility ethics will be expected to be efficient on the learning compared with subsidiary textbook in use.

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A Study on Global Warming Education Contents in Science Textbook of the Korea, Japan and U.S.A. (한국, 일본, 미국 중등학교 과학 교과서에 나타난 지구온난화 교육 내용에 관한 연구)

  • Jung, Yun-Jung;Choi, Don-Hung;Cho, Seong-Hoa
    • Hwankyungkyoyuk
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    • v.23 no.3
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    • pp.50-61
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    • 2010
  • As the influence of mankind's actions grows on the earth's climate, the necessity of climate change education is increasing everyday. Therefore, this study will discuss desirable courses about climate changes education that can be used throughout the world. It is meaningful to try to compare the contents and scope of earth global warming education courses of different nations. where education and a research about earth global warming occur simlutaneously. This is key because global warming is not just a national issue, but an international issue. Therefore this study need to understand the status of environmental education is over the world to devise an improvement plan help to solve the problem of climate change on an international level. Therefore, this study compared, the global warming educational contents which appeared in Korean textbooks to Japanese and American textbooks, and analyzed commonalities and differences of each. Also, we will discuss desirable global warming educational instructional strategies. This study analyzed the present situation of nations by looking at common points and differences using an analysis form. Even though the researchers of an each nation analyzed the teaching material through common analysis forms, this study utilized a common analysis method with a colleague researcher regarding environmental education, environment, environmental science to increase the validity of the study in each nation. Also the difference and similarities were aggregated as This study collected the analysis results of each nation. The researchers utilized the results of the analyses to engage in repeated discussion and the sharing of results.

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Global Warming and Alpine Vegetation

  • Kong, Woo-seok
    • The Korean Journal of Ecology
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    • v.22 no.6
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    • pp.363-369
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    • 1999
  • Reconstruction of the past vegetational changes of Korea in connection with climate changes enables to understand the impacts of past and future global warming on alpine vegetation. Despite the early appearance of the cold-tolerant vegetation since the Mesozoic Era. the occurrence of warmth-tolerant vegetation during the Oligocene and Miocene implies that most of alpine and subalpine vegetations have been confined to the alpine and subalpine belts of northern Korean Peninsula. The presence of cold-episodes during the Pleistocene. however. might have caused a general southward and downslope expansions of cold-tolerant alpine and subalpine vegetation. But the climatic warming trend during the Holocene or post-glacial period eventually has isolated cold-tolerant alpine and subalpine vegetation mainly in the northern Korea. but also on scattered high mountains in the southern Korea. The presence of numerous arctic-alpine and alpine plants on the alpine and subalpine belts is mainly due to their relative degree of sensitivity to high summer temperatures. Global warming would cause important changes in species composition and altitudinal distributional pattern. The altitudinal migration of temperate vegetation upward caused by climatic warming would eventually devastate alpine plants.

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High Performance of Temperature Gradient Chamber Newly Built for Studying Global Warming Effect on a Plant Population

  • Lee, Jae-Seok;Tetsuyuki Usami;Takehisa Oikawa;Lee, Ho-Joon
    • The Korean Journal of Ecology
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    • v.23 no.4
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    • pp.293-298
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    • 2000
  • To study the effect of global warming on the growth of plants and plant populations throughout their life cycle under a field-like condition, we constructed a Temperature Gradient Chamber (TGC) in Tsukuba, Japan. The chamber had slender shape : 30 m long. 3 m wide, and 2.5 m high. That satisfactory performance was confirmed by a test throughout all seasons in 1998: the projected global warming condition in the near future was simulated. That is, independent of a great daily or seasonal change in ambient meteorological conditions, air temperatures at the air outlet were warmed 5$^{\circ}C$ higher than those at the ambient (the annual mean was 14.3$^{\circ}C$) with precision of ${\pm}$0.2$^{\circ}C$ (the annual means were 19.2$^{\circ}C$) with a rising rate of approximately 1$^{\circ}C$ every 5 m. This chamber will enable us to study the effects of global warming on growth of plants and plant populations because their abilities to control air temperature are excellent. TGC is expected that it would be utilized for studying the effect of global warming on plant growth under natural weather conditions.

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Generating global warming scenarios with probability weighted resampling and its implication in precipitation with nonparametric weather generator

  • Lee, Taesam;Park, Taewoong
    • Proceedings of the Korea Water Resources Association Conference
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    • pp.226-226
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    • 2015
  • The complex climate system regarding human actions is well represented through global climate models (GCMs). The output from GCMs provides useful information about the rate and magnitude of future climate change. Especially, the temperature variable is most reliable among other GCM outputs. However, hydrological variables (e.g. precipitation) from GCM outputs for future climate change contain too high uncertainty to use in practice. Therefore, we propose a method that simulates temperature variable with increasing in a certain level (e.g. 0.5oC or 1.0oC increase) as a global warming scenario from observed data. In addition, a hydrometeorological variable can be simulated employing block-wise sampling technique associated with the temperature simulation. The proposed method was tested for assessing the future change of the seasonal precipitation in South Korea under global warming scenario. The results illustrate that the proposed method is a good alternative to levy the variation of hydrological variables under global warming condition.

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Decrease of Global Warming Effect During Dry Etching of Silicon Nitride Layer Using C3F6O/O2 Chemistries

  • Kim, Il-Jin;Moon, Hock-Key;Lee, Jung-Hun;Jung, Jae-Wook;Cho, Sang-Hyun;Lee, Nae-Eung
    • Proceedings of the Korean Vacuum Society Conference
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    • pp.459-459
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    • 2012
  • Recently, the discharge of global warming gases in dry etching process of TFT-LCD display industry is a serious issue because perfluorocarbon compound (PFC) gas causes global warming effects. PFCs including CF4, C2F6, C3F8, CHF3, NF3 and SF6 are widely used as etching and cleaning gases. In particular, the SF6 gas is chemically stable compounds. However, these gases have large global warming potential (GWP100 = 24,900) and lifetime (3,200). In this work, we chose C3F6O gas which has a very low GWP (GWP100 = <100) and lifetime (< 1) as a replacement gas. This study investigated the effects of the gas flow ratio of C3F6O/O2 and process pressure in dual-frequency capacitively coupled plasma (CCP) etcher on global warming effects. Also, we compared global warming effects of C3F6O gas with those of SF6 gas during dry etching of a patterned positive type photo-resist/silicon nitride/glass substrate. The etch rate measurements and emission of by-products were analyzed by scanning electron Microscopy (SEM; HITACI, S-3500H) and Fourier transform infrared spectroscopy (FT-IR; MIDAC, I2000), respectively. Calculation of MMTCE (million metric ton carbon equivalents) based on the emitted by-products were performed during etching by controlling various process parameters. The evaluation procedure and results will be discussed in detail.

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