• KLA journal
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• v.8 no.9
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• pp.34-34
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• 1967

• Journal of Environmental Science International
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• v.31 no.7
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• pp.617-635
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• 2022

The effect of coupled data assimilation (DA) on the meteorological prediction in the west coastal region of Korea was evaluated using a coupled atmosphere-ocean model (e.g., COAWST) in the spring (March 17-26) of 2019. We performed two sets of simulation experiments: (1) with the coupled DA (i.e., COAWST_DA) and (2) without the coupled DA (i.e., COAWST_BASE). Overall, compared with the COAWST_BASE simulation, the COAWST_DA simulation showed good agreement in the spatial and temporal variations of meteorological variables (sea surface temperature, air temperature, wind speed, and relative humidity) with those of the observations. In particular, the effect of the coupled DA on wind speed was greatly improved. This might be primarily due to the prediction improvement of the sea surface temperature resulting from the coupled DA in the study area. In addition, the improvement of meteorological prediction in COAWST_DA simulation was also confirmed by the comparative analysis between SST and other meteorological variables (sea surface wind speed and pressure variation).

• Journal of Environmental Science International
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• v.31 no.7
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• pp.637-652
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• 2022

In this study, the contributions of emissions (foreign and domestic) and atmospheric physical and chemical processes to PM_2.5 concentrations were evaluated during a high PM_2.5 episode (March 24-26, 2018) observed on the Jeju Island in the spring of 2018. These analyses were performed using the community multi-scale air quality (CMAQ) modeling system using the brute-force method and integrated process rate (IPR) analysis, respectively. The contributions of domestic emissions from South Korea (41-45%) to PM_2.5 on the Jeju Island were lower than those (81-89%) of long-range transport (LRT) from China. The substantial contribution of LRT was also confirmed in conjunction with the air mass trajectory analysis, indicating that the frequency of airflow from China (58-62% of all trajectories) was higher than from other regions (28-32%) (e.g., South Korea). These results imply that compared to domestic emissions, emissions from China have a stronger impact than domestic emissions on the high PM_2.5 concentrations in the study area. From the IPR analysis, horizontal transport contributed substantially to PM_2.5 concentrations were dominant in most of the areas of the Jeju Island during the high PM_2.5 episode, while the aerosol process and vertical transport in the southern areas largely contributed to higher PM_2.5 concentrations.

• 한국지구물리탐사학회:학술대회논문집
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• 2004.06a
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• pp.317-321
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• 2004

• 한국지구물리탐사학회:학술대회논문집
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• 2006.06a
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• pp.113-116
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• 2006

Successful field test results for detection of buried undersea HVDC by magnetic vector measurements are discussed. Further study will be focused on practical utilization.

• Journal of Soil and Groundwater Environment
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• v.14 no.3
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• pp.68-79
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• 2009

Groundwater is the main water resource in Jeju Island because storage of surface water in reservoir is difficult in the island due to the permeable volcanic rocks. Because of this reason, the groundwater is expected to be very vulnerable to seawater intrusion by global warming, which will cause sea level rise. The long term change of mean sea level around the Korean Peninsula including Jeju Island was analyzed for this study. The sea level rise over the past 40 years was estimated to be of $2.16\;{\pm}\;1.71\;mm/yr$ around the Korean Peninsula. However, the rising trend around the eastern part of Jeju Island was more remarkable. In addition, the groundwater/seawater intrusion monitoring network operated by the Jeju Special Self-Governing Province shows that seawater intrusion becomes more prominent during dry 4-5 months in a year when the sea level increases. This implies that the fresh groundwater lens in the eastern part of Jeju Island is influenced by the sea level rise due to global warming in the long term scale.

• 한국지구과학회:학술대회논문집
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• 2002.02a
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• pp.44-44
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• 2002

• Korean Architects
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• no.7 s.315
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• pp.104-105
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• 1995

대한주택공사에서는 대단위 소규모 저층 형 아파트를 제주시 화북지구에 건립코자 현상설계경기를 실시하여 우원건축(문정일)안을 최우수작으로 선정, 지난 6월 2일 주공 연수처 3강의실에서 시상식을 가졌다. 총 25개사무소에서 작품을 제출한 이번 설계경기의 우수작은 무영건축(안길원+손광민)안이 차지했으며, 가작은 우원건축ㆍ건축문화(조성룡)안과 동인ㆍ우양건축(윤태웅)안 그리고 건원건축(곽홍길)안이 각각 선정됐다.

• 한국지구물리탐사학회:학술대회논문집
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• 2009.10a
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• pp.60-61
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• 2009

• 한국지구물리탐사학회:학술대회논문집
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• 2009.10a
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• pp.174-175
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• 2009