Zobrazeno 1 - 10
of 161
pro vyhledávání: '"Trevor F Keenan"'
Autor:
Leeya Pressburger, Kalyn Dorheim, Trevor F Keenan, Haewon McJeon, Steven J Smith, Ben Bond-Lamberty
Publikováno v:
Environmental Research Letters, Vol 18, Iss 5, p 054005 (2023)
Atmospheric carbon dioxide (CO _2 ) concentrations have increased as a direct result of human activity and are at their highest level over the last 2 million years, with profound impacts on the Earth system. However, the magnitude and future dynamics
Externí odkaz:
https://doaj.org/article/ab42a3979f364a01802b0f6081b71344
Publikováno v:
Environmental Research Letters, Vol 16, Iss 12, p 124071 (2021)
Satellite observations show that the surface urban heat island intensity (SUHII) has been increasing over the last two decades. This is often accompanied by an increased urban-rural contrast of vegetation greenness. However, the contribution of uneve
Externí odkaz:
https://doaj.org/article/d23fdb1206ef477ab985c04e9d1ea0c5
Autor:
Trevor F Keenan, I. Colin Prentice, Josep G Canadell, Christopher A Williams, Han Wang, Michael Raupach, G. James Collatz
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-10 (2016)
Year-to-year variability in atmospheric CO2 is strongly influenced by the terrestrial biosphere. Despite increasing anthropogenic emissions, Keenan et al. report a recent pause in the growth rate of atmospheric CO2using observations and vegetation mo
Externí odkaz:
https://doaj.org/article/2989cd2a757847618be532ee40e40e45
Autor:
Mark A Friedl, Josh M Gray, Eli K Melaas, Andrew D Richardson, Koen Hufkens, Trevor F Keenan, Amey Bailey, John O’Keefe
Publikováno v:
Environmental Research Letters, Vol 9, Iss 5, p 054006 (2014)
By the end of this century, mean annual temperatures in the Northeastern United States are expected to warm by 3–5 °C, which will have significant impacts on the structure and function of temperate forests in this region. To improve understanding
Externí odkaz:
https://doaj.org/article/0b84060bbda047379ab1bed5d3dac893
Autor:
Sha Zhou, A. Park Williams, Benjamin R. Lintner, Kirsten L. Findell, Trevor F. Keenan, Yao Zhang, Pierre Gentine
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-10 (2022)
Here, the authors find increased dry–season and decreased wet–season water availability over subtropical regions and the Amazon. This is caused by seasonally varying soil moisture–atmosphere feedbacks under global warming.
Externí odkaz:
https://doaj.org/article/1186eb8d067f4526a1d95feb18ac066f
Autor:
Yanlan Liu, William J. Riley, Trevor F. Keenan, Zelalem A. Mekonnen, Jennifer A. Holm, Qing Zhu, Margaret S. Torn
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-10 (2022)
Shrub encroachment trends are widespread yet complex. Here the authors demonstrate that not considering dispersal and fire leads to overestimating shrub expansion in Arctic tundra and therefore its role as carbon sink.
Externí odkaz:
https://doaj.org/article/5bdd5dbe64644b13b54f6b50d88bef57
Autor:
Wu Sun, Yuanyuan Fang, Xiangzhong Luo, Yoichi P. Shiga, Yao Zhang, Arlyn E. Andrews, Kirk W. Thoning, Joshua B. Fisher, Trevor F. Keenan, Anna M. Michalak
Publikováno v:
AGU Advances, Vol 2, Iss 2, Pp n/a-n/a (2021)
Abstract Large uncertainties in North American terrestrial carbon fluxes hinder regional climate projections. Terrestrial biosphere models (TBMs), the essential tools for understanding continental‐scale carbon cycle, diverge on whether temperate fo
Externí odkaz:
https://doaj.org/article/844fb12ed644492a800263255326ac26
Autor:
Alessio Collalti, Carlo Trotta, Trevor F. Keenan, Andreas Ibrom, Ben Bond‐Lamberty, Ruediger Grote, Sara Vicca, Christopher P. O. Reyer, Mirco Migliavacca, Frank Veroustraete, Alessandro Anav, Matteo Campioli, Enrico Scoccimarro, Ladislav Šigut, Elisa Grieco, Alessandro Cescatti, Giorgio Matteucci
Publikováno v:
Journal of Advances in Modeling Earth Systems, Vol 10, Iss 10, Pp 2427-2452 (2018)
Abstract Forest carbon use efficiency (CUE, the ratio of net to gross primary productivity) represents the fraction of photosynthesis that is not used for plant respiration. Although important, it is often neglected in climate change impact analyses.
Externí odkaz:
https://doaj.org/article/c75c47f252eb4cf1b128e75642a3ae7b
Autor:
Xinchen Lu, Trevor F. Keenan
Publikováno v:
Global Change Biology. 28:3083-3093
The length of the growing season has a large influence on the carbon, water, and energy fluxes of global terrestrial ecosystems. While there has been mounting evidence of an advanced start of the growing season mostly due to elevated spring air tempe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1453bb8fad14c10eedc87f9e6792a37
https://doi.org/10.1111/gcb.16104
https://doi.org/10.1111/gcb.16104
Autor:
Mahmoud Osman, Benjamin F. Zaitchik, Hamada S. Badr, Jason Otkin, Yafang Zhong, David Lorenz, Martha Anderson, Trevor F. Keenan, David L. Miller, Christopher Hain, Thomas Holmes
Publikováno v:
Journal of Hydrometeorology. 23:275-289
Recent years have seen growing appreciation that rapidly intensifying flash droughts are significant climate hazards with major economic and ecological impacts. This has motivated efforts to inventory, monitor, and forecast flash drought events. Here
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db8f64378074a477a5ea767f040a77ba
https://doi.org/10.1175/jhm-d-21-0134.1
https://doi.org/10.1175/jhm-d-21-0134.1