气候变化领域集成服务门户(CCPortal): New constraints on biogenic emissions using satellite-based estimates of carbon monoxide fluxes

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DOI	10.5194/acp-19-13569-2019
	New constraints on biogenic emissions using satellite-based estimates of carbon monoxide fluxes
	Worden H.M.; Anthony Bloom A.; Worden J.R.; Jiang Z.; Marais E.A.; Stavrakou T.; Gaubert B.; Lacey F.
发表日期	2019
ISSN	16807316
起始页码	13569
结束页码	13579
卷号	19 期号:21
英文摘要	Biogenic non-methane volatile organic compounds (NMVOCs) emitted from vegetation are a primary source for the chemical production of carbon monoxide (CO) in the atmosphere, and these biogenic emissions account for about 18 % of the global CO burden. Partitioning CO fluxes to different source types in top-down inversion methods is challenging; typically a simple scaling of the posterior flux to prior flux values for fossil fuel, biogenic and biomass burning sources is used. Here we show top-down estimates of biogenic CO fluxes using a Bayesian inference approach, which explicitly accounts for both posterior and a priori CO flux uncertainties. This approach re-partitions CO fluxes following inversion of Measurements Of Pollution In The Troposphere (MOPITT) CO observations with the GEOS-Chem model, a global chemical transport model driven by assimilated meteorology from the NASA Goddard Earth Observing System (GEOS). We compare these results to the prior information for CO used to represent biogenic NMVOCs from GEOS-Chem, which uses the Model of Emissions of Gases and Aerosols from Nature (MEGAN) for biogenic emissions. We evaluate the a posteriori biogenic CO fluxes against top-down estimates of isoprene fluxes using Ozone Monitoring Instrument (OMI) formaldehyde observations. We find similar seasonality and spatial consistency in the posterior CO and top-down isoprene estimates globally. For the African savanna region, both top-down CO and isoprene seasonality vary significantly from the MEGAN a priori inventory. This method for estimating biogenic sources of CO will provide an independent constraint on modeled biogenic emissions and has the potential for diagnosing decadal-scale changes in emissions due to land-use change and climate variability. © Author(s) 2019.
语种	英语
scopus关键词	biogenic emission; biomass burning; carbon flux; carbon monoxide; fossil fuel; partitioning; volatile organic compound
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/144054
作者单位	Atmospheric Chemistry Observations and Modeling (ACOM), National Center for Atmospheric Research (NCAR), Boulder, CO, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China; School of Physics and Astronomy, University of Leicester, Leicester, United Kingdom; Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
推荐引用方式 GB/T 7714	Worden H.M.,Anthony Bloom A.,Worden J.R.,et al. New constraints on biogenic emissions using satellite-based estimates of carbon monoxide fluxes[J],2019,19(21).
APA	Worden H.M..,Anthony Bloom A..,Worden J.R..,Jiang Z..,Marais E.A..,...&Lacey F..(2019).New constraints on biogenic emissions using satellite-based estimates of carbon monoxide fluxes.Atmospheric Chemistry and Physics,19(21).
MLA	Worden H.M.,et al."New constraints on biogenic emissions using satellite-based estimates of carbon monoxide fluxes".Atmospheric Chemistry and Physics 19.21(2019).