气候变化领域集成服务门户(CCPortal): On what scales can GOSAT flux inversions constrain anomalies in terrestrial ecosystems?

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DOI	10.5194/acp-19-13017-2019
	On what scales can GOSAT flux inversions constrain anomalies in terrestrial ecosystems?
	Byrne B.; Jones D.B.A.; Strong K.; Polavarapu S.M.; Harper A.B.; Baker D.F.; Maksyutov S.
发表日期	2019
ISSN	16807316
起始页码	13017
结束页码	13035
卷号	19 期号:20
英文摘要	Interannual variations in temperature and precipitation impact the carbon balance of terrestrial ecosystems, leaving an imprint in atmospheric CO2. Quantifying the impact of climate anomalies on the net ecosystem exchange (NEE) of terrestrial ecosystems can provide a constraint to evaluate terrestrial biosphere models against and may provide an emergent constraint on the response of terrestrial ecosystems to climate change. We investigate the spatial scales over which interannual variability in NEE can be constrained using atmospheric CO2 observations from the Greenhouse Gases Observing Satellite (GOSAT). NEE anomalies are calculated by performing a series of inversion analyses using the GEOS-Chem adjoint model to assimilate GOSAT observations. Monthly NEE anomalies are compared to "proxies", variables that are associated with anomalies in the terrestrial carbon cycle, and to upscaled NEE estimates from FLUXCOM. Statistically significant correlations (P<0.05) are obtained between posterior NEE anomalies and anomalies in soil temperature and FLUXCOM NEE on continental and larger scales in the tropics, as well as in the northern extratropics on subcontinental scales during the summer (R2≥0.49), suggesting that GOSAT measurements provide a constraint on NEE interannual variability (IAV) on these spatial scales. Furthermore, we show that GOSAT flux inversions are generally better correlated with the environmental proxies and FLUXCOM NEE than NEE anomalies produced by a set of terrestrial biosphere models (TBMs), suggesting that GOSAT flux inversions could be used to evaluate TBM NEE fluxes. © 2019 Author(s).
语种	英语
scopus关键词	atmospheric chemistry; carbon dioxide; carbon flux; GOSAT; precipitation (climatology); satellite data; satellite imagery; temperature profile; terrestrial ecosystem
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/144080
作者单位	Department of Physics, University of Toronto, Toronto, ON, Canada; Joint Institute for Regional Earth System Science and Engineering, University of California, Los Angeles, CA, United States; Climate Research Division, Environment and Climate Change Canada, Toronto, ON, Canada; College of Engineering, Mathematics, and Physical Sciences, University of Exeter, Exeter, United Kingdom; NOAA Earth System Research Laboratory, Global Monitoring Division, Boulder, CO, United States; Cooperative Institute for Research in the Atmosphere, Colorado State University, Ft. Collins, CO, United States; Center for Global Environmental Research, National Institute for Environmental Studies, Tsukuba, Japan; Jet Propulsion Laboratory, California Institute of TechnologyCA, United States
推荐引用方式 GB/T 7714	Byrne B.,Jones D.B.A.,Strong K.,et al. On what scales can GOSAT flux inversions constrain anomalies in terrestrial ecosystems?[J],2019,19(20).
APA	Byrne B..,Jones D.B.A..,Strong K..,Polavarapu S.M..,Harper A.B..,...&Maksyutov S..(2019).On what scales can GOSAT flux inversions constrain anomalies in terrestrial ecosystems?.Atmospheric Chemistry and Physics,19(20).
MLA	Byrne B.,et al."On what scales can GOSAT flux inversions constrain anomalies in terrestrial ecosystems?".Atmospheric Chemistry and Physics 19.20(2019).