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Increased light-use efficiency in northern terrestrial ecosystems indicated by CO2 and greening observations


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dc.contributorHanqin Tian, tianhan@auburn.eduen_US
dc.creatorThomas, Rebecca T.
dc.creatorPrentice, Lain Colin
dc.creatorGraven, Heather
dc.creatorCiais, Philippe
dc.creatorFisher, Joshua B
dc.creatorHayes, Daniel J
dc.creatorHuang, Maoyi
dc.creatorHuntzinger, Deborah N.
dc.creatorIto, Akihiko
dc.creatorJain, Atul
dc.creatorMao, Jiafu
dc.creatorMichalak, Anna M.
dc.creatorPeng, Shushi
dc.creatorPoulter, Benjamin
dc.creatorRicciuto, Daniel M.
dc.creatorShi, Xiaoying
dc.creatorSchwalm, Christopher
dc.creatorTian, Hanqin
dc.creatorZeng, Ning
dc.date.accessioned2020-04-01T17:21:47Z
dc.date.available2020-04-01T17:21:47Z
dc.date.created2016-11
dc.identifier10.1002/2016GL070710en_US
dc.identifier.urihttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2016GL070710en_US
dc.identifier.urihttp://hdl.handle.net/11200/49776
dc.description.abstractObservations show an increasing amplitude in the seasonal cycle of CO2 (ASC) north of 45 degrees N of 56 +/- 9.8% over the last 50 years and an increase in vegetation greenness of 7.5-15% in high northern latitudes since the 1980s. However, the causes of these changes remain uncertain. Historical simulations from terrestrial biosphere models in the Multiscale Synthesis and Terrestrial Model Intercomparison Project are compared to the ASC and greenness observations, using the TM3 atmospheric transport model to translate surface fluxes into CO2 concentrations. We find that the modeled change in ASC is too small but the mean greening trend is generally captured. Modeled increases in greenness are primarily driven by warming, whereas ASC changes are primarily driven by increasing CO2. We suggest that increases in ecosystem-scale light use efficiency (LUE) have contributed to the observed ASC increase but are underestimated by current models. We highlight potential mechanisms that could increase modeled LUE.en_US
dc.formatPDFen_US
dc.publisherAMER GEOPHYSICAL UNIONen_US
dc.relation.ispartofGeophysical Research Lettersen_US
dc.relation.ispartofseries0094-8276en_US
dc.rights©The Authors 2016. This is this the version of record co-published by the American Geophysical Union and John Wiley & Sons, Inc. It is made available under the CC-BY-NC-ND 4.0 license. Item should be cited as: Thomas, R. T., Prentice, I. C., Graven, H., Ciais, P., Fisher, J. B., Hayes, D. J., ... & Mao, J. (2016). Increased light‐use efficiency in northern terrestrial ecosystems indicated by CO2 and greening observations. Geophysical Research Letters, 43(21), 11-339.en_US
dc.subjectMODEL INTERCOMPARISON PROJECTen_US
dc.subjectPROGRAM MULTISCALE SYNTHESISen_US
dc.subjectATMOSPHERIC CARBON-DIOXIDEen_US
dc.subjectSEASONAL AMPLITUDEen_US
dc.subjectLAND-USEen_US
dc.subjectVegetationen_US
dc.subjectClimateen_US
dc.titleIncreased light-use efficiency in northern terrestrial ecosystems indicated by CO2 and greening observationsen_US
dc.typeTexten_US
dc.type.genreJournal Article, Academic Journalen_US
dc.citation.volume43en_US
dc.citation.issue21en_US
dc.citation.spage11339en_US
dc.citation.epage11349en_US
dc.description.statusPublisheden_US
dc.description.peerreviewYesen_US
dc.creator.orcid0000-0002-1806-4091en_US

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