Search

Your search keyword '"Cox, P.M."' showing total 5 results
Start Over Author "Cox, P.M." Database OpenAIRE
5 results on '"Cox, P.M."'

2. Positive feedback between global warming and atmospheric CO2 concentration inferred from past climate change

Author

Scheffer, M., Brovkin, V., and Cox, P.M.

Subjects
Aquatic Ecology and Water Quality Management, WIMEK, model, carbon-cycle, greenhouse, temperatures, gases, Aquatische Ecologie en Waterkwaliteitsbeheer, antarctic ice, ice core
Abstract

There is good evidence that higher global temperatures will promote a rise of greenhouse gas levels, implying a positive feedback which will increase the effect of anthropogenic emissions on global temperatures. However, the magnitude of this effect predicted by the available models remains highly uncertain, due to the accumulation of uncertainties in the processes thought to be involved. Here we present an alternative way of estimating the magnitude of the feedback effect based on reconstructed past changes. Linking this information with the mid-range Intergovernmental Panel on Climate Change estimation of the greenhouse gas effect on temperature we suggest that the feedback of global temperature on atmospheric CO2 will promote warming by an extra 15¿78% on a century-scale. This estimate may be conservative as we did not account for synergistic effects of likely temperature moderated increase in other greenhouse gases. Our semi-empirical approach independently supports process based simulations suggesting that feedback may cause a considerable boost in warming.

Published
2006

4. Assessing and Simulating the Altered Functioning of the Earth System in the Anthropocene

Author

Cox, P.M. and Nakicenovic, N.

Abstract

The current human-dominated era or "Anthropocene" has been a time of unprecedented rates of change within the Earth system. As such the Anthropocene poses a no-analogue situation in which evidence of past Earth system change cannot, on their own, tell us of how the system will respond in the future. Instead, we need to develop mechanistic and phenomenological models based on robust underlying principles to extrapolate our knowledge of the past Earth system into projections of the future. This requires an entire spectrum of Earth system models that can be related to each other in a more rigorous way that has been achieved to date. It also requires new integrated models of the two-way coupling between the biophysical and human aspects of the Earth system. Only then will we be able to approach all of the paleodata constraints on the Earth system dynamics (which require long simulations), while also providing regionally specific Earth system projections and spatially specific human development paths for policy makers (which requires, in both cases, high-resolution comprehensive models as well as models that can bridge spatial and temporal scales). Such a spectrum of models offers a solution to the tension between "simulation," which inevitably leads to increasing model complexity, and "understanding," which often involves reducing the system to its bare necessities.

Published
2004

5. The carbon cycle and atmospheric carbon dioxide

Author

Prentice, I.C., Farquhar, G.D., Fasham, M.J.R., Goulden, M.L., Heimann, M., Jaramillo, V.J., Kheshgi, H.S., Quéré, C. Le, Scholes, R.J., Wallace, D.W.R., Archer, D., Ashmore, M.R., Aumont, Olivier, Baker, D., Battle, M., Bender, M., Bopp, L.P., Bousquet, P., Caldeira, K., Ciais, P., Cox, P.M., Cramer, W., Dentener, F., Enting, I.G., Field, C.B., Friedlingstein, P., Holland, E.A., Houghton, R.A., House, J.I., Ishida, A., Jain, A.K., Janssens, I.A., Joos, F., Kaminski, T., Keeling, C.D., Keeling, R.F., Kicklighter, D.W., Kohfeld, K.E., Knorr, W., Law, R., Lenton, T., Lindsay, K., Maier-Reimer, E., Manning, A.C., Matear, R.J., McGuire, A.D., Melillo, J.M., Meyer, R., Mund, M., Orr, J.C., Piper, S., Plattner, K., Rayner, P.J., Sitch, S., Slater, R., Taguchi, S., Tans, P.P., Tian, H.Q., Weirig, M.F., Whorf, T., Yool, A., Laboratoire d'océanographie dynamique et de climatologie (LODYC), Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Modélisation INVerse pour les mesures atmosphériques et SATellitaires (SATINV), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), ICOS-ATC (ICOS-ATC), Modelling the Earth Response to Multiple Anthropogenic Interactions and Dynamics (MERMAID), Aptel, Florence, Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), and Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)

Subjects
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, [SDU.OCEAN] Sciences of the Universe [physics]/Ocean, Atmosphere, [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment, [SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces, environment, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2001

Catalog

Books, media, physical & digital resources
See catalog results