Search Results - "Ciais, P"

Negative emissions physically needed to keep global warming below 2 °C by Gasser, T., Guivarch, C., Tachiiri, K., Jones, C. D., Ciais, P.

“…To limit global warming to <2 °C we must reduce the net amount of CO 2 we release into the atmosphere, either by producing less CO 2 (conventional mitigation)…”
Get full text

Evaluating the Land and Ocean Components of the Global Carbon Cycle in the CMIP5 Earth System Models by Anav, A., Friedlingstein, P., Kidston, M., Bopp, L., Ciais, P., Cox, P., Jones, C., Jung, M., Myneni, R., Zhu, Z.

“…The authors assess the ability of 18 Earth system models to simulate the land and ocean carbon cycle for the present climate. These models will be used in the…”
Get full text

Global patterns of phosphatase activity in natural soils by Margalef, O., Sardans, J., Fernández-Martínez, M., Molowny-Horas, R., Janssens, I. A., Ciais, P., Goll, D., Richter, A., Obersteiner, M., Asensio, D., Peñuelas, J.

“…Soil phosphatase levels strongly control the biotic pathways of phosphorus (P), an essential element for life, which is often limiting in terrestrial…”
Get full text

Five Decades of Northern Land Carbon Uptake Revealed by the Interhemispheric CO2 Gradient by Ciais, P., Tan, J., Wang, X., Roedenbeck, C., Chevallier, F., Piao, S.-L., Moriarty, R., Broquet, G., Quér, C. Le, Canadell, J. G., Peng, S., Poulter, B., Liu, Z., Tans, P.

“…The global land and ocean carbon sinks have increased proportionally with increasing carbon dioxide emissions during the past decades. It is thought that…”
Get full text

Path-dependent reductions in CO2 emission budgets caused by permafrost carbon release by Gasser, T., Kechiar, M., Ciais, P., Burke, E. J., Kleinen, T., Zhu, D., Huang, Y., Ekici, A., Obersteiner, M.

“…Emission budgets are defined as the cumulative amount of anthropogenic CO 2 emission compatible with a global temperature-change target. The simplicity of the…”
Get full text

Amazon rainforest photosynthesis increases in response to atmospheric dryness by Green, J K, Berry, J, Ciais, P, Zhang, Y, Gentine, P

“…Earth system models predict that increases in atmospheric and soil dryness will reduce photosynthesis in the Amazon rainforest, with large implications for the…”
Get full text

Global assessment of oil and gas methane ultra-emitters by Lauvaux, T, Giron, C, Mazzolini, M, d'Aspremont, A, Duren, R, Cusworth, D, Shindell, D, Ciais, P

“…Methane emissions from oil and gas (O&G) production and transmission represent a considerable contribution to climate change. These emissions comprise sporadic…”
Get full text

Historical Carbon Dioxide Emissions Caused by Land-Use Changes are Possibly Larger than Assumed by Arneth, A., Sitch, S., Pongratz, J., Stocker, B. D., Ciais, P., Poulter, B., Bayer, A. D., Bondeau, A., Calle, L., Chini, L. P., Gasser, T., Fader, M., Friedlingstein, P., Kato, E., Li, W., Lindeskog, M., Nabel, J. E. M. S., Pugh, T. A. M., Robertson, E., Viovy, N., Yue, C., Zaehle, S.

“…The terrestrial biosphere absorbs about 20% of fossil-fuel CO2 emissions. The overall magnitude of this sink is constrained by the difference between…”
Get full text

Present-day and future Amazonian precipitation in global climate models: CMIP5 versus CMIP3 by Joetzjer, E., Douville, H., Delire, C., Ciais, P.

“…The present study aims at evaluating and comparing precipitation over the Amazon in two sets of historical and future climate simulations based on phase 3…”
Get full text

Forest production efficiency increases with growth temperature by Collalti, A., Ibrom, A., Stockmarr, A., Cescatti, A., Alkama, R., Fernández-Martínez, M., Matteucci, G., Sitch, S., Friedlingstein, P., Ciais, P., Goll, D. S., Nabel, J. E. M. S., Pongratz, J., Arneth, A., Haverd, V., Prentice, I. C.

“…Forest production efficiency (FPE) metric describes how efficiently the assimilated carbon is partitioned into plants organs (biomass production, BP) or—more…”
Get full text

Global fossil carbon emissions rebound near pre-COVID-19 levels by Jackson, R B, Friedlingstein, P, Le Quéré, C, Abernethy, S, Andrew, R M, Canadell, J G, Ciais, P, Davis, S J, Deng, Zhu, Liu, Zhu, Korsbakken, J I, Peters, G P

“…Abstract Fossil CO 2 emissions in 2021 grew an estimated 4.2% (3.5%–4.8%) to 36.2 billion metric tons compared with 2020, pushing global emissions back close…”
Get full text

Aligning agriculture and climate policy by Chabbi, A., Lehmann, J., Ciais, P., Loescher, H. W., Cotrufo, M. F., Don, A., SanClements, M., Schipper, L., Six, J., Smith, P., Rumpel, C.

“…The 4‰ initiative to sequester carbon in soils has the potential to connect sustainable development goals, enhance food security and mitigate climate change by…”
Get full text

Uncertainty in the response of terrestrial carbon sink to environmental drivers undermines carbon-climate feedback predictions by Huntzinger, D. N., Michalak, A. M., Schwalm, C., Ciais, P., King, A. W., Fang, Y., Schaefer, K., Wei, Y., Cook, R. B., Fisher, J. B., Hayes, D., Huang, M., Ito, A., Jain, A. K., Lei, H., Lu, C., Maignan, F., Mao, J., Parazoo, N., Peng, S., Poulter, B., Ricciuto, D., Shi, X., Tian, H., Wang, W., Zeng, N., Zhao, F.

“…Terrestrial ecosystems play a vital role in regulating the accumulation of carbon (C) in the atmosphere. Understanding the factors controlling land C uptake is…”
Get full text

Global trends in carbon sinks and their relationships with CO2 and temperature by Fernández-Martínez, M., Sardans, J., Chevallier, F., Ciais, P., Obersteiner, M., Vicca, S., Canadell, J. G., Bastos, A., Friedlingstein, P., Sitch, S., Piao, S. L., Janssens, I. A., Peñuelas, J.

“…Elevated CO 2 concentrations increase photosynthesis and, potentially, net ecosystem production (NEP), meaning a greater CO 2 uptake. Climate, nutrients and…”
Get full text

An attempt at estimating Paris area CO2 emissions from atmospheric concentration measurements by Breon, F M, Broquet, G, Puygrenier, V, Chevallier, F, Xueref-Remy, I, Ramonet, M, Dieudonne, E, Lopez, M, Schmidt, M, Perrussel, O

“…Atmospheric concentration measurements are used to adjust the daily to monthly budget of fossil fuel CO2 emissions of the Paris urban area from the prior…”
Get full text

Sources, transport and deposition of iron in the global atmosphere by Wang, R, Balkanski, Y, Boucher, O, Bopp, L, Chappell, A, Ciais, P, Hauglustaine, D, Peñuelas, J, Tao, S

“…Atmospheric deposition of iron (Fe) plays an important role in controlling oceanic primary productivity. However, the sources of Fe in the atmosphere are not…”
Get full text

Evaluation of the terrestrial carbon cycle, future plant geography and climate-carbon cycle feedbacks using five Dynamic Global Vegetation Models (DGVMs) by SITCH, S, HUNTINGFORD, C, GEDNEY, N, LEVY, P.E, LOMAS, M, PIAO, S.L, BETTS, R, CIAIS, P, COX, P, FRIEDLINGSTEIN, P, JONES, C.D, PRENTICE, I.C, WOODWARD, F.I

“…This study tests the ability of five Dynamic Global Vegetation Models (DGVMs), forced with observed climatology and atmospheric CO₂, to model the contemporary…”
Get full text

Decadal trends in global CO emissions as seen by MOPITT by Yin, Y, Chevallier, F, Ciais, P, Broquet, G, Fortems-Cheiney, A, Pison, I, Saunois, M

“…Negative trends of carbon monoxide (CO) concentrations are observed in the recent decade by both surface measurements and satellite retrievals over many…”
Get full text

Global Simulation and Evaluation of Soil Organic Matter and Microbial Carbon and Nitrogen Stocks Using the Microbial Decomposition Model ORCHIMIC v2.0 by Huang, Y., Guenet, B., Wang, Y. L., Ciais, P.

“…Soils contain the largest amount of land carbon, even a small change of this pool can significantly affect atmospheric CO2 and climate change. A good…”
Get full text

Assessing climate change impacts on sorghum and millet yields in the Sudanian and Sahelian savannas of West Africa by Sultan, B, Roudier, P, Quirion, P, Alhassane, A, Muller, B, Dingkuhn, M, Ciais, P, Guimberteau, M, Traore, S, Baron, C

“…Sub-Saharan West Africa is a vulnerable region where a better quantification and understanding of the impact of climate change on crop yields is urgently…”
Get full text