• Proceedings of the Korea Air Pollution Research Association Conference
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• 2008.10a
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• pp.177-178
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• 2008

• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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• 2002.08a
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• pp.316-320
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• 2002

폭풍해일이나 파랑에 대한 보다 정확한 예측을 위해서는 해상에서의 바람장에 대한 정확한 추산이 선행되어야 하며, 특히 해상ㆍ연안재해를 유발시키는 최대풍이 주로 태풍상황에서 발생되기 때문에 이에 대한 정확한 예측이 매우 중요하다. 태풍은 일반적인 온대성 저기압이나 고기압과는 달리 그 중심부근에서 기압과 바람의 시공간적 변화가 크고 태풍의 중심이 빠른 속도로 이동되기 때문에 일반적인 기상자료 분석에 의해 산출된 바람장은 해양모델에서 요구되는 상세한 변화를 나타내지 못하고, 특히 실제 관측된 기상자료가 전무한 해상으로 태풍이 이동했을 경우에는 일기도 격자점 상의 기압으로 해상풍을 구하는 것은 큰 오차를 유발한다(해양수산부, 2001). (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2002.11a
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• pp.105-106
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• 2002

대기 중으로 배출된 오염물질의 확산을 예측하기 위해서는 대기의 흐름과 배출원의 특성이 가장 중요한 자료이다. 최근 많이 사용하는 대기확산 모델의 기상자료는 단일 측정기상자료를 입력자료로 이용하고 있지만, 이런 방법은 모델링 영역 전체를 동시간대에서는 같은 풍향과 같은 풍속이라고 가정하여 모델링을 수행하는 것이다. (중략)

• Journal of the Korean Society of Marine Environment & Safety
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• v.29 no.7
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• pp.770-778
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• 2023

Sea surface wind is an important variable for elucidating the atmospheric-ocean interactions and predicting the dangerous weather conditions caused by oceans. Accurate sea surface wind data are required for making correct predictions; however, there are limited observational datasets for oceans. Therefore, this study aimed to obtain long-period high-resolution sea surface wind data. First, the ERA5 reanalysis wind field, which can be used for a long period at a high resolution, was regridded and synthesized using the asymmetric typhoon wind field calculated via the Generalized Asymmetric Holland Model of the numerical model named ADvanced CIRCulation model. The accuracy of the asymmetric typhoon synthesized wind field was evaluated using data obtained from Korea Meteorological Administration and Japan Meteorological Administration. As a result of the evaluation, it was found that the asymmetric typhoon synthetic wind field reproduce observations relatively well, compared with ERA5 reanalysis wind field and symmetric typhoon synthetic wind field calculated by the Holland model. The sea surface wind data produced in this study are expected to be useful for obtaining storm surge data and conducting frequency analysis of storm surges and sea surface winds in the future.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.11a
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• pp.55-56
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• 2018

대규모 해군 사업인 장보고-III 시설사업의 간략한 사업개요와 공사시 또는 완공후의 원활한 시설운용을 위한 파고예측시스템을 개발 및 적용하였다. 진해만의 지리적 특성을 고려하여 풍파가 주요파라메타로 설정하였으며, 인근 기상대 바람예보 자료를 활용하여 주요지점에 대해 파고를 예측할 수 있는 시스템을 개발하였으며, 향후 공사시 활용할 수 있다. 또한, 특정사업 및 특정 지역에 대한 간략 파고예측시스템의 제작으로 시공 및 현장에 유익한 정보 전달이 가능하다.

• Proceedings of the Korea Water Resources Association Conference
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• 2006.05a
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• pp.1925-1930
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• 2006

A quasi depth-varying mathematical model for wind-generated circulation in coastal areas, expressed in terms of the depth-averaged horizontal velocity components and free surface elevation was validated and used to understand the diurnal circulation process. The wind velocity is considered as a dominant factor for driving the wind generated current. In this paper, three dimensional numerical experiments that included the land topography were used to investigate the mesoscale air flow over the coastal regions. The surface temperature of the inland was determined through the surface heat budget consideration with inclusion of a layer of vegetation. A series of numerical experiments were then carried out to investigate the diurnal response of the air flow and wind-generated circulation to various types of surface inhomogeneities.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.04a
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• pp.381-382
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• 2000

방사능 물질의 장거리 수송 예측을 위한 확산 모형은 유독 물질이나 방사능 물질 누출 사고시, 비상 대응을 위해 중요한 도구로 사용되고 있다. 이 결과의 신뢰성을 확보를 위해서는 모형의 이론 체계와 입력자료로 이용되는 예측 기상장의 정확성과 신속성이 중요하며, 이를 위해 미국, 유럽 둥에서는 1980년을 전후하여 모형 체계 개발에 착수하였고, 현재는 현업에서 운용되고 있다(Lee et al., 1997; J. Ehrhardt 1998). 국내에서는 원자력발전소 주변 반경 십여 km지역에 위치한 기상청의 자동 종합 기상 측정 장치(AWS, Aut(wnatic Weather Slatier)의 실측 바람장을 기반으로 확산을 진단하고 있다(원자력안전기술원, 1999). (중략)

• Journal of Radiation Protection and Research
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• v.29 no.3
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• pp.205-212
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• 2004

Three-dimensional wind field and atmospheric dispersion models have been developed for estimating the concentration distributions of radioactive materials released into atmosphere. The field tracer experiment near the Kori nuclear power plant located over complex terrain was carried out for validating the atmospheric dispersion model. The wind fields were one of the most important factors for calculating the concentration. Therefore several numerical simulations using the measured wind data were performed to get more accurate concentration distributions compared with the analyzed values of the tracer gas. The calculated concentration distributions agreed well in the case of the usage of the more measured wind data in wind field model.

• Journal of IKEEE
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• v.24 no.4
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• pp.1136-1140
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• 2020

As air pollution caused by fine dust becomes serious, interest in the spread of fine dust and prediction of air quality is increasing. The causes of fine dust are very diverse, and some fine dust naturally occurs through forest fires and yellow dust, but most of them are known to be caused by air pollutants from burning fossil fuels such as petroleum and coal or from automobile exhaust gas. In this paper, the CALPUFF model recommended by the US EPA is used, and CALPUFF diffusion modeling is performed by generating a wind field through the CALMET model as a meteorological preprocessing program that generates a three-dimensional wind field, which is a meteorological element required by CALPUFF. Through this, we propose a fine dust diffusion modeling and air quality prediction system that reflects complex topography.

• Journal of Korea Water Resources Association
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• v.48 no.12
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• pp.995-1009
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• 2015

Weather radar rainfall data has been recognized for making valuable contributions to short-term flood forecasting and management over the past decades. There are several advantages to better monitoring rainfall in ungauged area compared to ground-based rain gauges with which spatial patterns of the rainfall are not effectively identified. Hence, this study aims to develop a new scheme to forecast spatio-temporal rainfall field. The proposed model was based on an advection scheme to track wind patterns and velocity. The results showd a promising forecasting skill with quantitative and qualitative measures. It was confirmed that the forecasted rainfall may be effectively used an input data for a distributed hydrological model.