The Analysis of Correlation between BVOCs and Ozone at Taehwa Research Forest
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Ozone absorbs ultraviolet light which is harmful to life. However, the recent increase of ambient ozone level due to climate change is becoming the cause of stimulating human eyes, affecting respiratory system, and damaging crops. In this paper, a study was conducted at the Taehwa Research Forest (TRF) of Seoul National University with the purpose of analyzing the characteristics of forest air chemistry based on the measurement of BVOCs emitted from forests and investigating the correlation of BVOCs with ozone generation. The results showed that levels of isoprene and MVK (Methyl Vinyl Keton)＋MACR (Methacrolein) were high in summer, but level of monoterpene was high in spring. Ozone level was high from the middle of May to the middle of June, which was before the rainy season. Comparison of the correlation between ozone and isoprene during the measurement period at the TRF showing limited NOx showed that the R2 was correlated with a low value of about 0.4. However, when the isoprene was actively produced from 6:00 AM to 6:00 PM, correlation analysis showed that R2 was about 0.9, while monoterpene started to increase in the afternoon, and decreased level of ozone at night. Correlation analysis showed negative correlation. Forests have two characteristics: not only the formation of ozone but also the decomposition of ozone.
Abstract
Ozone absorbs ultraviolet light which is harmful to life. However, the recent increase of ambient ozone level due to climate change is becoming the cause of stimulating human eyes, affecting respiratory system, and damaging crops. In this paper, a study was conducted at the Taehwa Research Forest (TRF) of Seoul National University with the purpose of analyzing the characteristics of forest air chemistry based on the measurement of BVOCs emitted from forests and investigating the correlation of BVOCs with ozone generation. The results showed that levels of isoprene and MVK (Methyl Vinyl Keton)＋MACR (Methacrolein) were high in summer, but level of monoterpene was high in spring. Ozone level was high from the middle of May to the middle of June, which was before the rainy season. Comparison of the correlation between ozone and isoprene during the measurement period at the TRF showing limited NOx showed that the R2 was correlated with a low value of about 0.4. However, when the isoprene was actively produced from 6:00 AM to 6:00 PM, correlation analysis showed that R2 was about 0.9, while monoterpene started to increase in the afternoon, and decreased level of ozone at night. Correlation analysis showed negative correlation. Forests have two characteristics: not only the formation of ozone but also the decomposition of ozone.
참고문헌 (23)
- 안현진, "수원시 대기 중 오존과 질소산화물의 장기변동 특성 (1991 ~ 2012)", 한국대기환경학회지, 31(4), pp.378~384 (2015), 한국대기환경학회[DOI]
- Baier BC, "Direct ozone production rate measurements and their use in assessing ozone source and receptor regions for Houston in 2013", Atmos Environ, 114, pp.83~91 (2015)[DOI]
- Benkovitz CM, "Modeling atmospheric sulfur over the northern hemisphere during the Aerosol Characterization Experiment 2 experimental period", J Geophys Res, 109, pp.D22207~ (2004)
- Black RS, "Proton-transfer reaction mass spectrometry", Chem Rev, 109, pp.861~896 (2009)[DOI]
- Chameides WL, "The role of biogenic hydrocarbons in urban photochemical smog: Atlanta as a case study", Science, 241, pp.1473~1475 (1988)[DOI]
- Fehsenfeld F, "Emissions of volatile organic compounds from vegetation and the implications for atmospheric chemistry", Global Biochemical Cycles, 6, pp.389~430 (1992)[DOI]
- Guenther A, "Natural volatile organic compound emission rate estimates for U.S. woodland landscapes", Atmos Environ, 28, pp.1197~1210 (1994)[DOI]
- Guenther AB, "Isoprene and monoterpene emission rate variability: Observations with eucalyptus and emission rate algorithm development", J Geophys Res, 96, pp.10799~10808 (1991)[DOI]
- Guenther AB, "Isoprene and monoterpene emission rate variability: Model evaluations and sensitivity analyses", J Geophys Res, 98, pp.12609~12617 (1993)[DOI]
- Helmig D, "Analytical techniques for sesquiterpene emission rate studies in vegetation enclosure experiments", Atmos Environ, 38, pp.557~572 (2004)[DOI]
- Karl T, "The bi-directional exchange of oxygenated VOCs between a loblolly pine (Pinus taeda) plantation and the atmosphere", Atmosc Chem Phys, 5, pp.3015~3031 (2005)[DOI]
- 김형철, "제주지역 주요 침엽수에서 배출되는 VOCs 배출특성", 한국환경과학회지, 19(5), pp.627~637 (2010), 한국환경과학회
- Kim S, "Emissions and ambient distributions of Biogenic Volatile organic compounds in a ponderosa pine ecosystem: interpretation of PTR-MS mass spectra", Atmos Chem Phys, 10, pp.1759~1771 (2010)[DOI]
- Kim S, "Measurement of atmospheric sesquiterpenes by proton transfer reaction-mass spectrometry (PTR-MS)", Atmos Meas Tech, 2, pp.99~122 (2009)[DOI]
- Kim SY, "Impact of biogenic volatile organic compounds on ozone production at the Taehwa Research Forest near Seoul, South Korea", Atmos Environ, 70, pp.447~453 (2013)[DOI]
- Korea Forest Service (KFS), "Forest Basic Statistics by Region" (2015)
- Laffineur Q, "Isoprene and monoterpene emissions from mixed temperate forest", Atmosc Environ, 45, pp.3157~3168 (2011)[DOI]
- Lee BS, "Concentration variation of isoprene its implications for peak ozone concentration", Atmos Environ, 40, pp.5486~5495 (2006)[DOI]
- Lerdau M, "Controls on isoprene emission from trees in a subtropical dry forest", Plant Cell Environ, 20, pp.569~578 (1997)[DOI]
- National Institute of Environmental Research (NIER), "The study on the emission and deposition of BVOCs using Eddy Covariance in the trees (II)", pp.44~ (2015)
- Park SJ, "A study on the variations of maximum ozone concentrations with the meteorological characteristics in Seoul", Korean Society of Environmental Engineers, 12, pp.700~707 (2005)
- Taipale R, "Technical Note: Quantitative long-term measurements of VOC concentrations by PTR-MS measurement, calibration, and volume mixing ratio calculation methods", Atmos Chem Phys, 8, pp.6681~6698 (2008)[DOI]
- Tilton BE, "Health effects of tropospheric ozone", Environ Sci Technol, 23, pp.257~263 (1989)[DOI]