http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
위성 (OMI)을 활용한 한반도 지역 NO<sub>2</sub> 분석
김덕래,최원준,이준석,김승연,홍준석,송창근,이재범,홍유덕,이석조,Kim, Deok-Rae,Choi, Won-Jun,Lee, Joon-Suk,Kim, Seung-Yeon,Hong, Jun-Suk,Song, Chang-Keun,Lee, Jae-Bum,Hong, You-Deog,Lee, Suk-Jo 한국대기환경학회 2012 한국대기환경학회지 Vol.28 No.3
Monitoring of climate change and atmospheric environment by satellite measurements has been increased in recent years. In this study, nitrogen dioxide ($NO_2$) measurements from Ozone Monitoring Instrument (OMI) were compared with surface measurements over the Korean peninsula. $NO_2$ from OMI measurements showed high values and also showed seasonal variations such as high concentration in winter and low in summer over metropolitan areas while $NO_2$ concentration at national background station was low and did not clearly show seasonal variations. Surface measurements showed similar temporal and spatial variations to those of satellite measurement. The comparison between satellite measurements and surface measurements showed that the correlation between them was higher in urban area (r=0.64 at Seoul and r=0.63 at Daegu) than in national background stations (r=0.37 at Jeju) because the concentration in urban area was relatively high so that the variation of $NO_2$ concentration could be detected better than at national background stations by satellite. Satellite can effectively measure the emission and transport of pollutants with no limitations in spatial coverage.
박현주 ( Hyun Ju Park ),김소영 ( So Young Kim ),홍유덕 ( You Deog Hong ),한진석 ( Jin Seok Han ),김기준 ( Ki Joon Kim ) 한국환경분석학회 2013 환경분석과 독성보건 Vol.16 No.3
Biogenic volatile organic compounds (BVOC) are emitted from various plant species into atmospheric environment and playing an important role in the formation of photochemical oxidant. We established the enclosure chamber system for measuring BVOC flux in the field. In order to get the quality assurance and quality control data for the enclosure chamber system, some of VOC were tested by PTR-MS (Proton Transfer Reaction Mass Spectrometer). The enclosure chamber system was successfully evaluated in the field. Especially, PTR-MS allows real-time measurements of VOCs in the air with a high sensitivity and fast response time. The response factors and precisions were estimated and the time to reach equilibrium concentration in the chamber was examined. The measured response factor of VOCs was in the range of 2.40~18.31 and the elapsed time in the chamber was examined after approximately 70 min. The recovery of chamber system was higher than 80%.
연구노트 : 한반도 기후 변화 적응을 위한 취약성 지수 산정에 관한 고찰
김철희 ( Cheol Hee Kim ),김은화 ( Eun Hwa Kim ),송창근 ( Chang Keun Song ),홍유덕 ( You Deog Hong ),유정아 ( Jeong A Yoo ),홍성철 ( Sung Cheol Hong ) 한국환경과학회 2011 한국환경과학회지 Vol.20 No.6
Climate change assessment, together with climate change adaptation process, would be one of the worldwide important issues, and the study on climate change vulnerability indicator has been an essential problem for climate change adaptation. Vulnerability indicator can be used as a good tool to estimate the impact of climate change and to map out the distribution of its vulnerability over the given area both in Korea and other countries. This study addressed the conceptual summary on the assessment of climate change and its adaptation process. Previous studies on how to yield the vulnerability indicators of climate change are reviewed and several previous results of vulnerability indicators applied to Korean provinces are also discussed here.
산림-대기 간 자연적휘발성유기화합물 관측 기법에 따른 교환량 비교
박현주 ( Hyun Ju Park ),김소영 ( So Young Kim ),홍유덕 ( You Deog Hong ),한진석 ( Jin Seok Han ),김세웅 ( Sae Wung Kim ),안승만 ( Seong Man An ) 한국환경분석학회 2014 환경분석과 독성보건 Vol.17 No.1
Monitoring the flux of BVOCs (Biogenic volatile organic compounds) between the atmosphere and forest is necessary to study global climate change and regional air quality. BVOCs play an important role in the formation of photochemical oxidant, and they are routinely emitted by plants into the atmospheric environment. For this reason, the National Environmental Research Institute (NIER) has constructed an air quality monitoring tower in Mt. Thaehwa. In this study, we measured BVOC flux from forest using a enclosure chamber system and a REA (Relaxed Eddy Accumulation) system. It was found that monoterpene (90%) was emitted from Pinus koraiensis, and isoprene (87%) was emitted from Quercus variabilis. Also, major monoterpenes of Pinus koraiensis were a-pinene (44%) and 3-carene (17%). Isoprene was detected by the REA system at 20 m hight of the tower. As toluene emission is more similar to monoterpene emission, it can be assumed that toluene was emitted from trees when they are stressed. Finally, isoprene was mainly detected by the REA system in Mt. Thaehwa.