• Title/Summary/Keyword: recent change

Search Result 2,453, Processing Time 0.03 seconds

Review of Trends in Recent Climate Research by Korean Climatologists (최근 한국의 기후학 연구 동향)

  • Lee, Eun-Gul;Lee, Kyoung-Mi;Lee, Seung-Ho
    • Journal of the Korean Geographical Society
    • /
    • v.47 no.4
    • /
    • pp.490-513
    • /
    • 2012
  • This study reviewed recent trends in climate research by Korean climatologists. We analyzed six domestic journals listed in the Korean Citation Index and four international journals listed in the Science Citation Index during 2001-2011. Research on climate change has rapidly increased during the study period and studies on precipitation variability have been given continual attentions among Korean climatologists. In climate change research, meteorologists focused on characteristics, prediction, and causes while geographers were more interested in characteristics and impacts of climate change. In applied climatology and bioclimatology, research on the impacts of climate change on agriculture, livestock, vegetation, and human health has increased under recent climate change. While there has been steady interest in climatography by Korean climatologists, the number of papers has generally decreased over the recent period.

  • PDF

Recent Environmental Changes Influenced by Human Being in Lower Reach of Yellow River (황하강 하류지역에서의 인간에 의한 최근 환경변화)

  • Qingsong, Zhang
    • Journal of the Korean Geographical Society
    • /
    • v.33 no.spc
    • /
    • pp.729-738
    • /
    • 1998
  • Under background of global change, regional and local environmental changes in short-term are significantly influenced by human activities in recent time. This paper deals with serious environmental problems which has become a barrier of sustainable development in the lower reach of Yellow River due to over use of diverted water from Yellow River and underground water from coastal plain. Some countermeasures for improving local environment and economic development are introduced in the paper.

  • PDF

Climate Change, Meteorological Vision, and Literary Imagination (기후변화·기상학적 비전·문학적 상상력)

  • Shin, Moonsu
    • Journal of English Language & Literature
    • /
    • v.57 no.1
    • /
    • pp.3-25
    • /
    • 2011
  • As extremes of climate such as heavy storms, rainfalls, and droughts tend to be routine in recent years, global climate change becomes a serious concern not only for natural scientists but also for scholars of the human sciences. Efforts to tackle the anthropogenic climate change certainly require not only scientific knowledge about it but also a new sociocultural paradigm for valorizing and respecting nature in its own right. The huge casualties and mass destruction caused by recent climate disasters also remind us that nature has been an important factor to bring about changes in human history-a fact largely ignored in traditional history. This again validates the ecocritical request to prioritize place, physical setting, or the relationship characters hold with the natural world in understanding literary works. In this context this paper aims to demonstrate the importance of the meteorological vision in creating as well as understanding literary and cultural texts by examining such works as Shelley's "The Cloud," Byron's "Darkness," Keats's "To Autumn," all produced during the period of dramatic climate change including "the year without summer." It also briefly discusses Roland Emmerich's 2004 movie The Day after Tomorrow as a way of understanding recent cultural responses to the crisis of global warming.

Change the Annual Amplitude of Sea Surface Temperature due to Climate Change in a Recent Decade around the Korean Peninsula

  • Han, In-Seong;Lee, Joon-Soo
    • Journal of the Korean Society of Marine Environment & Safety
    • /
    • v.26 no.3
    • /
    • pp.233-241
    • /
    • 2020
  • We examined long-term variations in sea surface temperature (SST) and annual amplitudes of SST around the Korean Peninsula. Two SST data sets with data periods of approximately 51 years and longer than 100 years, respectively, were obtained from the National Institute of Fisheries Science and Japan Meteorological Agency. SST of Korean waters clearly increased during last 51 years (1968-2018), which was 2.5 times higher than the global trend. This significant increasing trend was caused by the dominant increasing SST trend during winter. However, a negative and positive SST anomaly frequently appeared during winter and summer, respectively, in a recent decade. These features of seasonal SST variation have changed the annual amplitude of SST, and resulted in a drastically increasing trend after 2009. Using the longer SST data set, it was revealed that the decreasing SST trend in winter began in the 2000s and the increasing SST trend in summer bagan in the 1990s. During a recent decade, there was a distinctive SST increase in summer, whereas a clear decrease in winter. In summary, the annual amplitude of SST around the Korean Peninsula significantly changed from a decreasing trend to an increasing trend during a recent decade.

Researching impact of climate change and economic development on the water supply deficit of Ta Keo reservoir, Lang Sonprovince, Viet Nam

  • Chin, L.V.
    • Proceedings of the Korea Water Resources Association Conference
    • /
    • 2016.05a
    • /
    • pp.199-199
    • /
    • 2016
  • In recent decades, climate change phenomenon has developed towards critical tendency and increased in both frequency, intensity and time which causes catastrophic damage in both people and property, especially in the field of agriculture and water resources. At the current, some researches in the world and Viet Nam studies on climate change impacts on the water resources sectors. Results of scientists'studies showed that climate change will seriously impact productivity, livelihoods and the environment on a global scale; especially large flood phenomena increasingly developing in intensity, drought more violently occurring in a long time. In recent years, the shortage of water supply for economic activity has started to happen with quite serious degree at the Viet Nam, especially in the northern mountainous provinces of Viet Nam.

  • PDF

Researching impact of climate change and economic development on the water supply deficit of Dong Quan reservoir, Ha Noi Capital, Viet Nam

  • Chin, L.V.
    • Proceedings of the Korea Water Resources Association Conference
    • /
    • 2017.05a
    • /
    • pp.190-190
    • /
    • 2017
  • In recent decades, climate change phenomenon has developed towards critical tendency and increased in both frequency, intensity and time which causes catastrophic damage in both people and property, especially in the field of agriculture and water resources. At the current, some researches in the world and Viet Nam studies on climate change impacts on the water resources sectors. Results of scientists' studies showed that climate change will seriously impact productivity, livelihoods and the environment on a global scale; especially large flood phenomena increasingly developing in intensity, drought more violently occurring in a long time. In recent years, the shortage of water supply for economic activity has started to happen with quite serious degree at the Viet Nam, especially in the northern provinces of Viet Nam.

  • PDF

Econometric Estimation of the Climate Change Policy Effect in the U.S. Transportation Sector

  • Choi, Jaesung
    • Journal of Climate Change Research
    • /
    • v.8 no.1
    • /
    • pp.1-10
    • /
    • 2017
  • Over the past centuries, industrialization in developed and developing countries has had a negative impact on global warming, releasing $CO_2$ emissions into the Earth's atmosphere. In recent years, the transportation sector, which emits one-third of total $CO_2$ emissions in the United States, has adapted by implementing a climate change action plan to reduce $CO_2$ emissions. Having an environmental policy might be an essential factor in mitigating the man-made global warming threats to protect public health and the coexistent needs of current and future generations; however, to my best knowledge, no research has been conducted in such a context with appropriate statistical validation process to evaluate the effects of climate change policy on $CO_2$ emission reduction in recent years in the U.S. transportation. The empirical findings using an entity fixed-effects model with valid statistical tests show the positive effects of climate change policy on $CO_2$ emission reduction in a state. With all the 49 states joining the climate change action plans, the U.S. transportation sector is expected to reduce its $CO_2$ emissions by 20.2 MMT per year, and for the next 10 years, the cumulated $CO_2$ emission reduction is projected to reach 202.3 MMT, which is almost equivalent to the $CO_2$ emissions from the transportation sector produced in 2012 by California, the largest $CO_2$ emission state in the nation.

Climate change and design wind load concepts

  • Kasperski, Michael
    • Wind and Structures
    • /
    • v.1 no.2
    • /
    • pp.145-160
    • /
    • 1998
  • In recent years, the effects of a possible climate change have been discussed in regard to wind loading on buildings and structures. Simple scenarios based on the assumption of global warming suggest an increase of storm intensities and storm frequencies and a possible re-distribution of storm tracks. Among recent publications, some papers seem to verify these scenarios while others deny the influence of climatic change. In an introductory step, the paper tries to re-examine these statements. Based on meteorological observations of a weather station in Germany, the existence of long-term trends and their statistical significance is investigated. The analysis itself is based on a refined model for the wind climate introducing a number of new basic variables. Thus, the numerical values of the design wind loads used in modern codes become more justified from the probabilistic point of view.

An On-Line Real-Time SPC Scheme and Its Performance

  • Nishina, Ken
    • International Journal of Quality Innovation
    • /
    • v.2 no.1
    • /
    • pp.30-49
    • /
    • 2001
  • This paper considers a recent environment in the manufacturing process in which data in large amounts can be obtained on-line in real-time. Under this environment an on-line real-time Statistical Process Control (SPC) scheme equipped with detection of a process change, change-point estimation, and recognition of the change pattern is proposed. The proposed SPC scheme is composed of a Cusum chart, filtering methods and Akaike Information Criterion (AIC). We examine the performance of this scheme by Monte Carlo simulation and show its usefulness.

  • PDF

The Empirical Analysis about Structural Characteristics of the Housing Jeonse Price Change in Seoul (서울시 주택전세가격 변동양상에 대한 실증분석)

  • Jung, Yeong-Ki;Kim, Kyung-Hoon;Kim, Jae-Jun
    • Journal of The Korean Digital Architecture Interior Association
    • /
    • v.12 no.1
    • /
    • pp.89-98
    • /
    • 2012
  • While the housing transaction price of Seoul tends to be stagnant or declining in line with the housing market recession since 2007, the jeonse price keeps continual increase. Such flow of jeonse price change has a serious influence on ordinary person's housing stability seriously. Therefore, it is very meaningful in terms of social policy to analyze the trend of recent jeonse price change. This study aims to have an empirical analysis of structural characteristics of the trend of recent jeonse price change. After the review of various previous studies, this study selected housing jeonse price index, non-sold house quantity, jeonse vs. transaction price rate, and housing construction performance as analytical variables, and employed monthly time series resources from January 2007 to April 2011. As a result, when the housing supply reduced, the potential quantity for jeonse market reduced that occurred unbalance of supply and demand in jeonse market. In turn, it caused the increase of jeonse price. And, in case of jeonse vs. transaction price rate change, the rate increased which means the increase of required rate of return of invested demand. As such, the increase of market risk degenerates the investment sentiment which caused the reduction of quantity for jeonse market as a submarket.