气候变化领域集成服务门户(CCPortal): An improved estimate for the δc and δc signatures of carbon monoxide produced from atmospheric oxidation of volatile organic compounds

CCPortal

DOI	10.5194/acp-19-8547-2019
	An improved estimate for the δc and δc signatures of carbon monoxide produced from atmospheric oxidation of volatile organic compounds
	Vimont I.J.; Turnbull J.C.; Petrenko V.V.; Place P.F.; Sweeney C.; Miles N.; Richardson S.; Vaughn B.H.; White J.W.C.
发表日期	2019
ISSN	16807316
起始页码	8547
结束页码	8562
卷号	19 期号:13
英文摘要	Atmospheric carbon monoxide (CO) is a key player in global atmospheric chemistry and a regulated pollutant in urban areas. Oxidation of volatile organic compounds (VOCs) is an important component of the global CO budget and has also been hypothesized to contribute substantially to the summertime urban CO budget. In principle, stable isotopic analysis of CO could constrain the magnitude of this source. However, the isotopic signature of VOC-produced CO has not been well quantified, especially for the oxygen isotopes.We performed measurements of CO stable isotopes on air samples from two sites around Indianapolis, US, over three summers to investigate the isotopic signature of VOCproduced CO. One of the sites is located upwind of the city, allowing us to quantitatively remove the background air signal and isolate the urban CO enhancements. as well as the isotopic signature of these enhancements. In addition, we use measurements of δ14CO2 in combination with the CO V CO2 emission ratio from fossil fuels to constrain the fossil-fuelderived CO and thereby isolate the VOC-derived component of the CO enhancement. Combining these measurements and analyses, we are able to determine the carbon and oxygen isotopic signatures of CO derived from VOC oxidation as-32:8%±0:5%and 3:6%±1:2%, respectively. Additionally, we analyzed CO stable isotopes for 1 year at Beech Island, South Carolina, US, a site thought to have large VOCderived contributions to the summertime CO budget. The Beech Island results are consistent with isotopic signatures of VOC-derived CO determined from the Indianapolis data. This study represents the first direct determination of the isotopic signatures of VOC-derived CO and will allow for improved use of isotopes in constraining the global and regional CO budgets. © 2019 Author(s).
语种	英语
scopus关键词	atmospheric chemistry; carbon isotope; carbon monoxide; oxidation; oxygen isotope; stable isotope; volatile organic compound; Indiana; Indianapolis; South Carolina; United States; Fagus
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144302
作者单位	Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO, United States; National Oceanic and Atmospheric Administration, Global Monitoring Division, Boulder, CO, United States; CIRES, University of Colorado, Boulder, CO, United States; GNS Science, Lower Hutt, New Zealand; Earth and Environmental Science Department, University of Rochester, Rochester, NY, United States; Department of Meteorology and Atmospheric Science, Pennsylvania State University, College Station, PA, United States
推荐引用方式 GB/T 7714	Vimont I.J.,Turnbull J.C.,Petrenko V.V.,et al. An improved estimate for the δc and δc signatures of carbon monoxide produced from atmospheric oxidation of volatile organic compounds[J],2019,19(13).
APA	Vimont I.J..,Turnbull J.C..,Petrenko V.V..,Place P.F..,Sweeney C..,...&White J.W.C..(2019).An improved estimate for the δc and δc signatures of carbon monoxide produced from atmospheric oxidation of volatile organic compounds.Atmospheric Chemistry and Physics,19(13).
MLA	Vimont I.J.,et al."An improved estimate for the δc and δc signatures of carbon monoxide produced from atmospheric oxidation of volatile organic compounds".Atmospheric Chemistry and Physics 19.13(2019).