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Akademický článek

Long-term drainage reduces CO2 uptake and increases CO2 emission on a Siberian floodplain due to shifts in vegetation community and soil thermal characteristics

Autor: M. J. Kwon, M. Heimann, O. Kolle, K. A. Luus, E. A. G. Schuur, N. Zimov, S. A. Zimov, M. Göckede

Publikováno v: Biogeosciences, Vol 13, Iss 14, Pp 4219-4235 (2016)

With increasing air temperatures and changing precipitation patterns forecast for the Arctic over the coming decades, the thawing of ice-rich permafrost is expected to increasingly alter hydrological conditions by creating mosaics of wetter and drier

Externí odkaz: https://doaj.org/article/8e6ac010abf849839877e51f1f6769d1

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Akademický článek

Investigating Alaskan methane and carbon dioxide fluxes using measurements from the CARVE tower

Autor: A. Karion, C. Sweeney, J. B. Miller, A. E. Andrews, R. Commane, S. Dinardo, J. M. Henderson, J. Lindaas, J. C. Lin, K. A. Luus, T. Newberger, P. Tans, S. C. Wofsy, S. Wolter, C. E. Miller

Publikováno v: Atmospheric Chemistry and Physics, Vol 16, Pp 5383-5398 (2016)

Northern high-latitude carbon sources and sinks, including those resulting from degrading permafrost, are thought to be sensitive to the rapidly warming climate. Because the near-surface atmosphere integrates surface fluxes over large ( ∼ 500–

Externí odkaz: https://doaj.org/article/4d5bec0aa147429bba4292b849629286

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Akademický článek

The Polar Vegetation Photosynthesis and Respiration Model: a parsimonious, satellite-data-driven model of high-latitude CO2 exchange

Autor: K. A. Luus, J. C. Lin

Publikováno v: Geoscientific Model Development, Vol 8, Iss 8, Pp 2655-2674 (2015)

We introduce the Polar Vegetation Photosynthesis and Respiration Model (PolarVPRM), a remote-sensing-based approach for generating accurate, high-resolution (≥ 1 km2, 3 hourly) estimates of net ecosystem CO2 exchange (NEE). PolarVPRM simulates NEE

Externí odkaz: https://doaj.org/article/6543cc35f7154191a501081d1f60958d

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Akademický článek

Pan-Arctic linkages between snow accumulation and growing-season air temperature, soil moisture and vegetation

Autor: K. A. Luus, Y. Gel, J. C. Lin, R. E. J. Kelly, C. R. Duguay

Publikováno v: Biogeosciences, Vol 10, Iss 11, Pp 7575-7597 (2013)

Arctic field studies have indicated that the air temperature, soil moisture and vegetation at a site influence the quantity of snow accumulated, and that snow accumulation can alter growing-season soil moisture and vegetation. Climate change is pr

Externí odkaz: https://doaj.org/article/feed74b4a2b240d4828f1e2e8f06df9c

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Assessing biotic contributions to CO2 fluxes in northern China using the Vegetation, Photosynthesis and Respiration Model (VPRM-CHINA) and observations from 2005 to 2009

Autor: J. William Munger, Chris P. Nielsen, Steven C. Wofsy, Yuxuan Wang, K. A. Luus, Michael B. McElroy, Thomas Nehrkorn, Yu Zhao, Archana Dayalu

Publikováno v: Biogeosciences. 15:6713-6729

Accurately quantifying the spatiotemporal distribution of the biological component of CO2 surface–atmosphere exchange is necessary to improve top-down constraints on China's anthropogenic CO2 emissions. We provide hourly fluxes of CO2 as net ecosys

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e03e3052202cb71b69407479f5422cf4
https://doi.org/10.5194/bg-15-6713-2018

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Spring photosynthetic onset and net CO 2 uptake in Alaska triggered by landscape thawing

Autor: Josh Benmergui, K. A. Luus, Junjie Liu, Thomas A. M. Pugh, Charles E. Miller, Nicholas C. Parazoo, Randy Kawa, Christian Rödenbeck, Roisin Commane, Walter C. Oechel, Kyle A. Arndt, Eugénie S. Euskirchen, Donatella Zona, N. Steiner, Almut Arneth, Ben Smith, Eric Stofferahn

Publikováno v: Global Change Biology. 24:3416-3435

The springtime transition to regional-scale onset of photosynthesis and net ecosystem carbon uptake in boreal and tundra ecosystems are linked to the soil freeze-thaw state. We present evidence from diagnostic and inversion models constrained by sate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f4ba4615281a3d4ca9961a978af8de8f
https://doi.org/10.1111/gcb.14283

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Gross primary production responses to warming, elevated CO 2 , and irrigation: quantifying the drivers of ecosystem physiology in a semiarid grassland

Autor: Edmund Ryan, Christian Werner, William J. Parton, Jianyang Xia, Sönke Zaehle, Xingjie Lu, Drew M. P. Peltier, Elise Pendall, Bertrand Guenet, Kiona Ogle, K. A. Luus, Martin G. De Kauwe, Belinda E. Medlyn, Shijie Shu, Anna B. Harper, David G. Williams, Shinichi Asao, Anthony P. Walker

Publikováno v: Global Change Biology
Global Change Biology, 2017, 23 (8), pp.3092-3106. ⟨10.1111/gcb.13602⟩
Global Change Biology, Wiley, 2017, 23 (8), pp.3092-3106. ⟨10.1111/gcb.13602⟩
Ryan, E M, Ogle, K, Peltier, D, Walker, A P, De Kauwe, M G, Medlyn, B E, Williams, D G, Parton, W, Asao, S, Guenet, B, Harper, A B, Lu, X, Luus, K A, Zaehle, S, Shu, S, Werner, C, Xia, J & Pendall, E 2017, ' Gross primary production responses to warming, elevated CO 2, and irrigation : quantifying the drivers of ecosystem physiology in a semiarid grassland ', Global Change Biology, vol. 23, no. 8, pp. 3092-3106 . https://doi.org/10.1111/gcb.13602
Ryan, E, Ogle, K, Peltier, D, Walker, A, De Kauwe, M, Medlyn, B, Williams, D, Parton, W, Asao, S, Guenet, B, Lu, X, Harper, A, Luus, K, Zaehle, S, Shu, S, Werner, C, Xia, J & Pendall, E 2017, ' Gross primary production responses to warming, elevated CO2, and irrigation: quantifying the drivers of ecosystem physiology in a semiarid grassland ', Global Change Biology, vol. 23, no. 7, pp. 3092-3106 . https://doi.org/10.1111/gcb.13602

Determining whether the terrestrial biosphere will be a source or sink of carbon (C) under a future climate of elevated CO2 (eCO2) and warming requires accurate quantification of gross primary production (GPP), the largest flux of C in the global C c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::483e47b7cba302e7829f66d74f852441
https://doi.org/10.1111/gcb.13602

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Decadal biomass increment in early secondary succession woody ecosystems is increased by CO2 enrichment

Publikováno v: Nature Communications
Nature Communications, Nature Publishing Group, 2019, 10 (1), ⟨10.1038/s41467-019-08348-1⟩
Articles
Nature Communications, 2019, 10 (1), ⟨10.1038/s41467-019-08348-1⟩
Walker, A, De Kauwe, M, Medlyn, B, Iversen, C, Zaehle, S, Asao, S, Guenet, B, Harper, A, Hickler, T, Hungate, B, Jain, A, Luo, Y, Lu, X, Lu, M, Luus, K, Megonigal, P, Oren, R, Ryan, E, Shu, S, Talhelm, A, Wang, Y, Warren, J, Werner, C, Xia, J, Wang, B, Zak, D & Norby, R 2019, ' Decadal biomass increment in early secondary succession woody ecosystems is increased by CO2 enrichment ', Nature Communications . https://doi.org/10.1038/s41467-019-08348-1
Nature Communications, Vol 10, Iss 1, Pp 1-13 (2019)
Nature communications, vol 10, iss 1
Walker, A P, De Kauwe, M G, Medlyn, B E, Zaehle, S, Iversen, C M, Asao, S, Guenet, B, Harper, A, Hickler, T, Hungate, B A, Jain, A K, Luo, Y, Lu, X, Lu, M, Luus, K, Megonigal, J P, Oren, R, Ryan, E, Shu, S, Talhelm, A, Wang, Y P, Warren, J M, Werner, C, Xia, J, Yang, B, Zak, D R & Norby, R J 2019, ' Decadal biomass increment in early secondary succession woody ecosystems is increased by CO2 enrichment ', Nature Communications, vol. 10, 454 (2019) . https://doi.org/10.1038/s41467-019-08348-1

Increasing atmospheric CO2 stimulates photosynthesis which can increase net primary production (NPP), but at longer timescales may not necessarily increase plant biomass. Here we analyse the four decade-long CO2-enrichment experiments in woody ecosys

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73838d2be655e57a00a28504f7a52f36
http://hdl.handle.net/10138/299809

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Akademický článek

Modeling the influence of snow cover on low Arctic net ecosystem exchange

Autor: K A Luus, R E J Kelly, J C Lin, E R Humphreys, P M Lafleur, W C Oechel

Publikováno v: Environmental Research Letters, Vol 8, Iss 3, p 035045 (2013)

The Arctic net ecosystem exchange (NEE) of CO _2 between the land surface and the atmosphere is influenced by the timing of snow onset and melt. The objective of this study was to examine whether uncertainty in model estimates of NEE could be reduced

Externí odkaz: https://doaj.org/article/18ab9da8239945e998c9c8f541075a65

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