气候变化领域集成服务门户(CCPortal): Analysis of temporal and spatial variability of atmospheric CO2 concentration within Paris from the GreenLITE™ laser imaging experiment

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DOI	10.5194/acp-19-13809-2019
	Analysis of temporal and spatial variability of atmospheric CO2 concentration within Paris from the GreenLITE™ laser imaging experiment
	Lian J.; Bréon F.-M.; Broquet G.; Scott Zaccheo T.; Dobler J.; Ramonet M.; Staufer J.; Santaren D.; Xueref-Remy I.; Ciais P.
发表日期	2019
ISSN	16807316
起始页码	13809
结束页码	13825
卷号	19 期号:22
英文摘要	In 2015, the Greenhouse gas Laser Imaging Tomography Experiment (GreenLITE™) measurement system was deployed for a long-duration experiment in the center of Paris, France. The system measures near-surface atmospheric CO2 concentrations integrated along 30 horizontal chords ranging in length from 2.3 to 5.2 km and covering an area of 25 km2 over the complex urban environment. In this study, we use this observing system together with six conventional in situ point measurements and the Weather Research and Forecasting model coupled with Chemistry (WRF-Chem) and two urban canopy schemes (Urban Canopy Model-UCM; Building Effect Parameterization-BEP) at a horizontal resolution of 1 km to analyze the temporal and spatial variations in CO2 concentrations within the city of Paris and its vicinity for the 1-year period spanning December 2015 to November 2016. Such an analysis aims at supporting the development of CO2 atmospheric inversion systems at the city scale. Results show that both urban canopy schemes in the WRF-Chem model are capable of reproducing the seasonal cycle and most of the synoptic variations in the atmospheric CO2 point measurements over the suburban areas as well as the general corresponding spatial differences in CO2 concentration that span the urban area. However, within the city, there are larger discrepancies between the observations and the model results with very distinct features during winter and summer. During winter, the GreenLITE™ measurements clearly demonstrate that one urban canopy scheme (BEP) provides a much better description of temporal variations and horizontal differences in CO2 concentrations than the other (UCM) does. During summer, much larger CO2 horizontal differences are indicated by the GreenLITE™ system than both the in situ measurements and the model results, with systematic east-west variations. © 2019 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	atmospheric chemistry; carbon dioxide; concentration (composition); experimental study; image resolution; imaging method; parameterization; spatiotemporal analysis; urban climate; 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/144043
作者单位	Laboratoire des Sciences du Climat et de l'Environnement (LSCE), IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France; Atmospheric and Environmental Research Inc., Lexington, MA, United States; Spectral Sensor Solutions LLC, Fort Wayne, IN, United States; Thales, Labège, France; Institut Mediterraneen de Biodiversite et d'Ecologie Marine et Continentale (IMBE), Aix Marseille Université, CNRS, IRD, Avignon Université, Aix-en-Provence, France; Harris Corporation, Fort Wayne, IN, United States; Laboratoire des Sciences du Climat et de l'Environnement (LSCE), IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France
推荐引用方式 GB/T 7714	Lian J.,Bréon F.-M.,Broquet G.,et al. Analysis of temporal and spatial variability of atmospheric CO2 concentration within Paris from the GreenLITE™ laser imaging experiment[J],2019,19(22).
APA	Lian J..,Bréon F.-M..,Broquet G..,Scott Zaccheo T..,Dobler J..,...&Ciais P..(2019).Analysis of temporal and spatial variability of atmospheric CO2 concentration within Paris from the GreenLITE™ laser imaging experiment.Atmospheric Chemistry and Physics,19(22).
MLA	Lian J.,et al."Analysis of temporal and spatial variability of atmospheric CO2 concentration within Paris from the GreenLITE™ laser imaging experiment".Atmospheric Chemistry and Physics 19.22(2019).