Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Letter tot the editor: Iconic CO2 Time Series at Risk
Houweling, S. ; Badawy, B. ; Baker, D.F. ; Basu, S. ; Belikov, D. ; Bergamaschi, P. ; Bousquet, P. ; Broquet, G. ; Butler, T. ; Canadell, J.G. ; Chen, J. ; Chevallier, F. ; Ciais, P. ; Collatz, G.J. ; Denning, S. ; Engelen, R. ; Enting, I.G. ; Fischer, M.L. ; Fraser, A. ; Gerbig, C. ; Gloor, M. ; Jacobson, A.R. ; Jones, D.B.A. ; Heimann, M. ; Khalil, A. ; Kaminski, T. ; Kasibhatla, P.S. ; Krakauer, N.Y. ; Krol, M. ; Maki, T. ; Maksyutov, S. ; Manning, A. ; Meesters, A. ; Miller, J.B. ; Palmer, P.I. ; Patra, P. ; Peters, W. ; Peylin, P. ; Poussi, Z. ; Prather, M.J. ; Randerson, J.T. ; Rockmann, T. ; Rodenbeck, C. ; Sarmiento, J.L. ; Schimel, D.S. ; Scholze, M. ; Schuh, A. ; Suntharalingam, P. ; Takahashi, T. ; Turnbull, J. ; Yurganov, L. ; Vermeulen, A. - \ 2012
Science 337 (2012)6098. - ISSN 0036-8075 - p. 1038 - 1040.
Can we reconcile atmospheric estimates of the Northern terrestrial carbon sink with land-based accounting?
Ciais, P. ; Canadell, J. ; Luyssaert, S. ; Chevallier, F. ; Shvidenko, A. ; Poussi, Z. ; Jonas, M. ; Peylin, P. ; King, A. ; Schulze, E.D. ; Piao, S. ; Rödenbeck, C. ; Peters, W. ; Bréon, F.M. - \ 2010
Current Opinion in Environmental Sustainability 2 (2010)4. - ISSN 1877-3435 - p. 225 - 230.
co2 sources - dioxide exchange - transport - inversion - balance - fluxes - sensitivity - emissions
We estimate the northern hemisphere (NH) terrestrial carbon sink by comparing four recent atmospheric inversions with land-based C accounting data for six large northern regions. The mean NH terrestrial CO2 sink from the inversion models is 1.7 Pg C year-1 over the period 2000–2004. The uncertainty of this estimate is based on the typical individual (1-sigma) precision of one inversion (0.9 Pg C year-1) and is consistent with the min–max range of the four inversion mean estimates (0.8 Pg C year-1). Inversions agree within their uncertainty for the distribution of the NH sink of CO2 in longitude, with Russia being the largest sink. The land-based accounting estimate of NH carbon sink is 1.7 Pg C year-1 for the sum of the six regions studied. The 1-sigma uncertainty of the land-based estimate (0.3 Pg C year-1) is smaller than that of atmospheric inversions, but no independent land-based flux estimate is available to derive a ‘between accounting model’ uncertainty. Encouragingly, the top-down atmospheric and the bottom-up land-based methods converge to consistent mean estimates within their respective errors, increasing the confidence in the overall budget. These results also confirm the continued critical role of NH terrestrial ecosystems in slowing down the atmospheric accumulation of anthropogenic CO2
Importance of methane and nitrous oxide for Europe’s terrestrial greenhouse-gas balance
Schulze, E.D. ; Luyssaert, S. ; Ciais, P. ; Freibauer, A. ; Janssens, I.A. ; Soussana, J.F. ; Smith, P. ; Grace, J. ; Levin, I. ; Thiruchittampalam, B. ; Heimann, M. ; Dolman, A.J. ; Valentini, R. ; Bousquet, P. ; Peylin, P. ; Peters, W. ; Rödenbeck, C. ; Etiope, G. ; Vuichard, N. ; Wattenbach, M. ; Nabuurs, G.J. ; Poussi, Z. ; Nieschulze, J. ; Gash, J.H.C. - \ 2009
Nature Geoscience 2 (2009). - ISSN 1752-0894 - p. 842 - 850.
atmospheric methane - carbon budget - emissions - co2 - ecosystems - fluxes - soils - sink
Climate change negotiations aim to reduce net greenhouse-gas emissions by encouraging direct reductions of emissions and crediting countries for their terrestrial greenhouse-gas sinks. Ecosystem carbon dioxide uptake has offset nearly 10% of Europe's fossil fuel emissions, but not all of this may be creditable under the rules of the Kyoto Protocol. Although this treaty recognizes the importance of methane and nitrous oxide emissions, scientific research has largely focused on carbon dioxide. Here we review recent estimates of European carbon dioxide, methane and nitrous oxide fluxes between 2000 and 2005, using both top-down estimates based on atmospheric observations and bottom-up estimates derived from ground-based measurements. Both methods yield similar fluxes of greenhouse gases, suggesting that methane emissions from feedstock and nitrous oxide emissions from arable agriculture are fully compensated for by the carbon dioxide sink provided by forests and grasslands. As a result, the balance for all greenhouse gases across Europe's terrestrial biosphere is near neutral, despite carbon sequestration in forests and grasslands. The trend towards more intensive agriculture and logging is likely to make Europe's land surface a significant source of greenhouse gases. The development of land management policies which aim to reduce greenhouse-gas emissions should be a priority
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