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1982–2010 Trends of Light Use Efficiency and Inherent Water Use Efficiency in African vegetation: Sensitivity to Climate and Atmospheric CO2 Concentrations

Abdoul Traore, Philippe Ciais, Nicolas Vuichard, Natasha MacBean, Cecile Dardel, Benjamin Poulter, Shilong Piao, Joshua Fisher, Nicolas Viovy, Martin Jung, Ranga Myneni
2014 Remote Sensing  
The objective of this study is to examine recent trends over the last 30 years in Light Use Efficiency (LUE) and inherent Water Use OPEN ACCESS Remote Sens. 2014, 6 8924 Efficiency (iWUE*) for the major  ...  Light and water use by vegetation at the ecosystem level, are key components for understanding the carbon and water cycles particularly in regions with high climate variability and dry climates such as  ...  Author Contributions All authors contributed extensively to the work presented in this paper. R. Myneni and M. Jung provided respectively fAPAR3g data and MTE-GPP/ET products. A.  ... 
doi:10.3390/rs6098923 fatcat:buxfudvqyneqto7viknsvm3dl4

Slowdown of the greening trend in natural vegetation with further rise in atmospheric CO2

Alexander J. Winkler, Ranga B. Myneni, Alexis Hannart, Stephen Sitch, Vanessa Haverd, Danica Lombardozzi, Vivek K. Arora, Julia Pongratz, Julia E. M. S. Nabel, Daniel S. Goll, Etsushi Kato, Hanqin Tian (+5 others)
2021 Biogeosciences  
Factors linked to anthropogenic carbon emissions, such as CO2 fertilization, climate change, and consequent disturbances such as fires and droughts, are hypothesized to be key drivers of changes in natural  ...  Altogether, our analysis reveals a slowing down of greening and strengthening of browning trends, particularly in the last 2 decades.  ...  Wiltshire, Sebastian Lienert, and Anthony P. Walker for providing model output as part of the TRENDYv7 ensemble. Alexander J. Winkler wishes to thank  ... 
doi:10.5194/bg-18-4985-2021 fatcat:7dqr5ryq35fo7j4lqjir7cyzru

Climate change, phenology, and phenological control of vegetation feedbacks to the climate system

Andrew D. Richardson, Trevor F. Keenan, Mirco Migliavacca, Youngryel Ryu, Oliver Sonnentag, Michael Toomey
2013 Agricultural and Forest Meteorology  
Vegetation phenology is highly sensitive to climate change.  ...  Phenology also controls many feedbacks of vegetation to the climate system by influencing the seasonality of albedo, surface roughness length, canopy conductance, and fluxes of water, energy, CO 2 and  ...  We thank the PIs of sites used in Fig. 4 for making their data publicly available.  ... 
doi:10.1016/j.agrformet.2012.09.012 fatcat:5hupmx473ncxvllgmyoxkll5am

The impact of spatiotemporal variability in atmospheric CO2 concentration on global terrestrial carbon fluxes

Eunjee Lee, Fan-Wei Zeng, Randal D. Koster, Brad Weir, Lesley E. Ott, Benjamin Poulter
2018 Biogeosciences Discussions  
Here, using global offline simulations with a terrestrial biosphere model, the sensitivity of terrestrial carbon cycle fluxes to multiple facets of the spatiotemporal variability of atmospheric CO<sub>  ...  The relative contribution of the different facets of CO<sub>2</sub> variability to GPP are found to vary regionally and seasonally, with the seasonal variation in atmospheric CO<sub>2</sub>, for example  ...  Under a CO2-enriched environment, plants obtain CO2 15 through the open stomata more efficiently and thereby lose less water to the atmosphere, allowing them to be more productive in dry regions or seasons  ... 
doi:10.5194/bg-2018-187 fatcat:lstixxrfnjadde3xpputrb3u3m

The impact of spatiotemporal variability in atmospheric CO2 concentration on global terrestrial carbon fluxes

Eunjee Lee, Fan-Wei Zeng, Randal D. Koster, Brad Weir, Lesley E. Ott, Benjamin Poulter
2018 Biogeosciences  
Here, using global offline simulations with a terrestrial biosphere model, the sensitivity of terrestrial carbon cycle fluxes to multiple facets of the spatiotemporal variability in atmospheric CO<sub>  ...  The relative contributions of the different facets of CO<sub>2</sub> variability to GPP are found to vary regionally and seasonally, with the seasonal variation in atmospheric CO<sub>2</sub>, for example  ...  The authors also thank the editor and the two anonymous reviewers for their comments and suggestions that helped greatly improve the paper.  ... 
doi:10.5194/bg-15-5635-2018 fatcat:aaphc64dfjhffhnlcnc76gjezq

Coupling between the terrestrial carbon and water cycles - a review

Pierre Gentine, Julia Green, Marceau Guerin, Vincent Humphrey, Sonia Isabelle Seneviratne, Yao Zhang, Sha Zhou
2019 Environmental Research Letters  
As atmospheric carbon dioxide concentration increases, climate and the coupled hydrologic cycle are modified, thus altering the terrestrial water cycle and the availability of soil moisture necessary for  ...  We especially focus on the key role of dryness (atmospheric dryness and terrestrial water availability) on carbon uptake, as well as the predicted impact of rising carbon dioxide on the water cycle.  ...  Gentine would like to thank the ETH in Zurich for hosting him as part of his Spring 2018 sabbatical visit. Prof.  ... 
doi:10.1088/1748-9326/ab22d6 fatcat:mdocgakz75ajzhjdoitxfcla5u

Climate Change and Livestock Production in Nigeria: Issues and Concerns

CC Nwosu, CC Ogbu
2011 Agro-Science  
Emission scenarios and climate change models, atmospheric enrichment with GHGs were shown to have a net negative impact on global climate leading to global warming, more variable and unpredictable climatic  ...  The probable changes in global climate as a result of atmospheric enrichment with greenhouse gases from results of simulated changes in atmospheric greenhouse gases are also presented.  ...  The earth's atmosphere, greenhouse gases, elements and drivers of climate change The earth is made up of the atmosphere -a layer of mixture of gases, water vapour and dust -dynamic in composition and in  ... 
doi:10.4314/as.v10i1.68720 fatcat:igdapymqujgulae3geoxhz63iy

A multi-species data assimilation system to retrieve information on land-atmosphere exchange processes

Ivar R. van der Velde, John B. Miller, Michiel K. van der Molen, Pieter P. Tans, Bruce H. Vaughn, James W.C. White, Kevin Schaefer, Wouter Peters
2017 Geoscientific Model Development Discussions  
in carbon-climate models that influence the CO<sub>2</sub>, water, isotope, and energy balance.  ...  <br><br> The multi-species CTDAS system varies the net exchange fluxes of both <sup>13</sup>CO<sub>2</sub> and CO<sub>2</sub> in ocean and terrestrial biosphere models to create an ensemble of <sup>13<  ...  More recently 13 C isotope was used to study the diurnal cycle of GPP and TER (Wehr et al., 2016) and was used as a tracer of water use efficiency to study long-term responses to CO 2 increases in tree-rings  ... 
doi:10.5194/gmd-2017-84 fatcat:ghtgrooirvhudny7ktl4eqleum

The CarbonTracker Data Assimilation System for CO2 and δ13C (CTDAS-C13 v1.0): retrieving information on land–atmosphere exchange processes

Ivar R. van der Velde, John B. Miller, Michiel K. van der Molen, Pieter P. Tans, Bruce H. Vaughn, James W. C. White, Kevin Schaefer, Wouter Peters
2018 Geoscientific Model Development  
in carbon-climate models that influence the CO<sub>2</sub>, water, isotope, and energy balance.  ...  <br><br>The dual-species CTDAS system varies the net exchange fluxes of both <sup>13</sup>CO<sub>2</sub> and CO<sub>2</sub> in ocean and terrestrial biosphere models to create an ensemble of <sup>13</sup  ...  Sciences, and by the National Computing Facilities Foundation (NCF project SH-060) for the use of supercomputing facilities.  ... 
doi:10.5194/gmd-11-283-2018 fatcat:u56jlosu7veatm4ffd2wuz4uwq

Changing Ocean, Marine Ecosystems, and Dependent Communities [chapter]

2022 The Ocean and Cryosphere in a Changing Climate  
the low emissions scenario (RCP2.6) throughout the surface and deep ocean, including: warming (virtually certain); ocean acidification (virtually certain); decreased stability of mineral forms of calcite  ...  (virtually certain); oxygen loss (very likely); reduced near-surface nutrients (likely as not); decreased net primary productivity (high confidence); reduced fish production (likely) and loss of key ecosystems  ...  growth of atmospheric CO2.  ... 
doi:10.1017/9781009157964.013 fatcat:v4tvrtytmrfgpaxzfd2or27c7e

Tropical forest responses to increasing atmospheric CO2: current knowledge and opportunities for future research

Lucas A. Cernusak, Klaus Winter, James W. Dalling, Joseph A. M. Holtum, Carlos Jaramillo, Christian Körner, Andrew D. B. Leakey, Richard J. Norby, Benjamin Poulter, Benjamin L. Turner, S. Joseph Wright
2013 Functional Plant Biology  
Water use efficiency will increase as ca rises, potentially impacting upon soil moisture status and nutrient availability.  ...  Elevated atmospheric CO2 concentrations (ca) will undoubtedly affect the metabolism of tropical forests worldwide; however, critical aspects of how tropical forests will respond remain largely unknown.  ...  Acknowledgements This review resulted from a symposium held at the Smithsonian Tropical Research Institute on 31 March and 1 April 2011.  ... 
doi:10.1071/fp12309 pmid:32481129 fatcat:tjpostq46vgnfkeqzfn6xpiu4y

Bounding the role of black carbon in the climate system: A scientific assessment

T. C. Bond, S. J. Doherty, D. W. Fahey, P. M. Forster, T. Berntsen, B. J. DeAngelo, M. G. Flanner, S. Ghan, B. Kärcher, D. Koch, S. Kinne, Y. Kondo (+19 others)
2013 Journal of Geophysical Research - Atmospheres  
Total global emissions of black carbon using bottom-up inventory methods are 7500 Gg yr À1 in the year 2000 with an uncertainty range of 2000 to 29000.  ...  However, global atmospheric absorption attributable to black  ...  ) to the climate sensitivity for pre-industrial to 2Â pre-industrial CO 2 changes (i.e., E i = l i / l CO2 ).  ... 
doi:10.1002/jgrd.50171 fatcat:z3nbu4bmujaizbnhw6ykohb2uu

Xxxii Scar Open Science Conference 'Antarctic Science And Policy Advice In A Changing World - Conference Abstracts [article]

Eoghan Griffin, Renuka Badhe
2016 Zenodo  
Abstracts from the 2012 Open Science Conference of the Scientific Committee on Antarctic Research (SCAR), Antarctic Science and Policy Advice in a Changing World, held in Portland, Oregon, USA  ...  In particular, improved modeling of geodynamic evolution of the Antarctic lithosphere that was a key  ...  The synthesis of these magnetic data into the next generation ADMAP compilation will enable a better understanding of the geological structure and tectonic history of the Antarctic region.  ... 
doi:10.5281/zenodo.53122 fatcat:o56w4vr3n5bsvkyj6vnetfem3e

Climate Change Impacts on the Mediterranean Coastal Zones

Frederic Brochier, Emiliano Ramieri
2001 Social Science Research Network  
Sofern die Verfasser die Dokumente unter Open-Content-Lizenzen (insbesondere CC-Lizenzen) zur Verfügung gestellt haben sollten, gelten abweichend von diesen Nutzungsbedingungen die in der dort genannten  ...  Mediterranean countries need to improve supply and to increase the efficiency of water use.  ...  response to change in CO2 concentrations [DETR, 1999] .  ... 
doi:10.2139/ssrn.277549 fatcat:a3befzdhibcf3icb2knlarzncy

CLIMATE CHANGE IMPACTS ON THE AQUACULTURE SECTOR FOR EUROPEAN ISLANDS

Lena Schenke, Kyra Hoevenaars, Tamás Bardócz
2020 Zenodo  
warming and long-lasting changes in all components of the climate system.  ...  According to the fifth Assessment Report of the Intergovernmental Panel on Climate Change, the warming of the climate system is unequivocal and continued emission of greenhouse gases will cause further  ...  Acknowledgments The study has been carried out with the financial support of the Fondazione Cariplo under the project "Climatology for professional activities and adaptation to urban climate change in  ... 
doi:10.5281/zenodo.4775788 fatcat:oszlppnfnraw7oez4kpl2saidq
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