气候变化领域集成服务门户(CCPortal): XCO2 in an emission hot-spot region: The COCCON Paris campaign 2015

CCPortal

DOI	10.5194/acp-19-3271-2019
	XCO2 in an emission hot-spot region: The COCCON Paris campaign 2015
	Vogel F.R.; Frey M.; Staufer J.; Hase F.; Broquet G.; Xueref-Remy I.; Chevallier F.; Ciais P.; Sha M.K.; Chelin P.; Jeseck P.; Janssen C.; Té Y.; Groß J.; Blumenstock T.; Tu Q.; Orphal J.
发表日期	2019
ISSN	16807316
起始页码	3271
结束页码	3285
卷号	19 期号:5
英文摘要	Providing timely information on urban greenhouse gas (GHG) emissions and their trends to stakeholders relies on reliable measurements of atmospheric concentrations and the understanding of how local emissions and atmospheric transport influence these observations. Portable Fourier transform infrared (FTIR) spectrometers were deployed at five stations in the Paris metropolitan area to provide column-averaged concentrations of CO2 (XCO2) during a field campaign in spring of 2015, as part of the Collaborative Carbon Column Observing Network (COCCON). Here, we describe and analyze the variations of XCO2 observed at different sites and how they changed over time. We find that observations upwind and downwind of the city centre differ significantly in their XCO2 concentrations, while the overall variability of the daily cycle is similar, i.e. increasing during night-time with a strong decrease (typically 2-3 ppm) during the afternoon. An atmospheric transport model framework (CHIMERECAMS) was used to simulate XCO2 and predict the same behaviour seen in the observations, which supports key findings, e.g. that even in a densely populated region like Paris (over 12 million people), biospheric uptake of CO2 can be of major influence on daily XCO2 variations. Despite a general offset between modelled and observed XCO2, the model correctly predicts the impact of the meteorological parameters (e.g. wind direction and speed) on the concentration gradients between different stations. When analyzing local gradients of XCO2 for upwind and downwind station pairs, those local gradients are found to be less sensitive to changes in XCO2 boundary conditions and biogenic fluxes within the domain and we find the model-data agreement further improves. Our modelling framework indicates that the local XCO2 gradient between the stations is dominated by the fossil fuel CO2 signal of the Paris metropolitan area. This furtherhighlights the potential usefulness of XCO2 observations to help optimize future urban GHG emission estimates. © Author(s) 2019.
语种	英语
scopus关键词	carbon dioxide; carbon emission; concentration (composition); FTIR spectroscopy; greenhouse gas; metropolitan area; France; Ile de France; Paris; Ville de Paris
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/144574
作者单位	Climate Research Division, Environment and Climate Change Canada, Toronto, Canada; Karlsruhe Institute of Technology (KIT), Institute of Meteorology and Climate Research (IMK), Karlsruhe, Germany; Thales, Labège, France; Laboratoire des Sciences du Climat et de l'Environnement (LSCE), IPSL, Université Paris-Saclay, Gif-sur-Yvette, France; Observatoire de Haute-Provence, OSU Pytheas, Saint-Michel-l'Observatoire, France; Royal Belgian Institute for Space Aeronomy, Brussels, Belgium; Laboratoire Inter-Universitaire des Systèmes Atmosphériques (LISA), Université Paris Est Créteil, Institut Pierre Simon Laplace, Créteil, France; Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres (LERMA), IPSL, Sorbonne Universités, Paris, France
推荐引用方式 GB/T 7714	Vogel F.R.,Frey M.,Staufer J.,et al. XCO2 in an emission hot-spot region: The COCCON Paris campaign 2015[J],2019,19(5).
APA	Vogel F.R..,Frey M..,Staufer J..,Hase F..,Broquet G..,...&Orphal J..(2019).XCO2 in an emission hot-spot region: The COCCON Paris campaign 2015.Atmospheric Chemistry and Physics,19(5).
MLA	Vogel F.R.,et al."XCO2 in an emission hot-spot region: The COCCON Paris campaign 2015".Atmospheric Chemistry and Physics 19.5(2019).