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Your search keyword '"Hewitt, C.D."' showing total 22 results
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22 results on '"Hewitt, C.D."'

1. Innovating Climate Science and Services: Recommendations for the Research Needed to Transition to a Climate-Resilient Society

Author

Hewitt, C.D., Guglielmo, F., Joussaume, S., Bessembinder, J., Christel, I., Doblas-Reyes, F.J., Djurdjevic, V., Garrett, N., Kjellstrom, E., Krzic, A., Costa, M. Manez, and St. Clair, A.L.

Subjects
Meteorological research -- Innovations, Business, Earth sciences
Abstract

Research and innovation in climate modeling and climate services is essential for improving climate knowledge and information in order to transition to a more sustainable and climate-resilient society. This transition [...]

Published
2022
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3. Last Glacial Maximum temperatures over the North Atlantic, Europe and western Siberia: a comparison between PMIP models, MARGO sea–surface temperatures and pollen-based reconstructions

Author

Kageyama, M., Laîné, A., Abe-Ouchi, A., Braconnot, P., Cortijo, E., Crucifix, M., de Vernal, A., Guiot, J., Hewitt, C.D., Kitoh, A., Kucera, M., Marti, O., Ohgaito, R., Otto-Bliesner, B., Peltier, W.R., Rosell-Melé, A., Vettoretti, G., Weber, S.L., and Yu, Y.

Published
2006
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4. Erratum to: Climate change under aggressive mitigation: The ENSEMBLES multi-model experiment (Clim Dyn, (2011), 10.1007/s00382-011-1005-5)

Author

Johns, T.C., Royer, J.-F., Höschel, I., Huebener, H., Roeckner, E., Manzini, E., May, W., Dufresne, J.-L., Otterå, O.H., van Vuuren, D.P., Salas y Melia, D., Giorgetta, M.A., Denvil, S., Yang, S., Fogli, P.G., Körper, J., Tjiputra, J.F., Stehfest, E., Hewitt, C.D., Met Office Hadley Centre for Climate Change (MOHC), United Kingdom Met Office [Exeter], Groupe d'étude de l'atmosphère météorologique (CNRM-GAME), Institut national des sciences de l'Univers (INSU - CNRS)-Météo France-Centre National de la Recherche Scientifique (CNRS), Institut für Meteorologie [Berlin], Freie Universität Berlin, Hessian Agency for the Environment and Geology, Rheingaustraße 186, 65203 Wiesbaden, Germany, Max Planck Institute for Meteorology (MPI-M), Max-Planck-Gesellschaft, Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Bologna (INGV), Istituto Nazionale di Geofisica e Vulcanologia, Centro Euro-Mediterraneo per i Cambiamenti Climatici [Bologna] (CMCC), Danish Climate Centre, Danish Meteorological Institute (DMI), Laboratoire de Météorologie Dynamique (UMR 8539) (LMD), Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École des Ponts ParisTech (ENPC)-École polytechnique (X)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Nansen Environmental and Remote Sensing Center [Bergen] (NERSC), Bjerknes Centre for Climate Research (BCCR), Department of Biological Sciences [Bergen] (BIO / UiB), University of Bergen (UiB)-University of Bergen (UiB), Utrech University, Utrech, Netherlands, Planbureau voor de Leefomgeving (PBL), Bilthoven, Netherlands, Institut Pierre-Simon-Laplace (IPSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National d'Études Spatiales [Toulouse] (CNES)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X), University of Bergen (UiB), Centre national de recherches météorologiques (CNRM), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology
Abstract

International audience; Unfortunately, in the aforementioned contribution, Table 2 of this paper erroneously reported two separate rows of data for the BCM-C model for both the A1B and E1 scenarios, only one of which was correct in each case. The lower of the two rows of data for each scenario (i.e. those corresponding to T changes of 2.44 K for A1B and 1.18 K for E1) contained correct data. The upper rows of data reported (i.e. those corresponding to T changes of 2.65 K for A1B and 1.38 for E1) contained some errors and should not have appeared. A corrected version of Table 2 appears below.

Published
2011
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5. Erratum to: Climate change under aggressive mitigation: The ENSEMBLES multi-model experiment

Author

Johns, T.C., Royer, J.F., Hoeschel, I., Huebener, H., Roeckner, E., Manzini, E., May, W., Dufresne, J.L., Ottera, O.H., van Vuuren, D.P., Salas y Melia, D., Giorgetta, M.A., Denvil, S., Yang, S., Fogli, P.G., Koerper, J., Tjiputra, J.F., Stehfest, E., Hewitt, C.D., Environmental Sciences, and Section Environmental Sciences

Subjects
Taverne
Published
2011

7. Climate Change under aggressive mitigation: The ENSEMBLES multi-model experiment

Author

Johns, T.C., Royer, J.F., Hoeschel, I., Huebener, H., Roeckner, E., Manzini, E., May, W., Dufresne, J.L., Ottera, O.H., van Vuuren, D.P., Salas y Melia, D., Giorgetta, M.A., Denvil, S., Yang, S., Fogli, P.G., Koerper, J., Tjiputra, J.F., Stehfest, E., Hewitt, C.D., Johns, T.C., Royer, J.F., Hoeschel, I., Huebener, H., Roeckner, E., Manzini, E., May, W., Dufresne, J.L., Ottera, O.H., van Vuuren, D.P., Salas y Melia, D., Giorgetta, M.A., Denvil, S., Yang, S., Fogli, P.G., Koerper, J., Tjiputra, J.F., Stehfest, E., and Hewitt, C.D.

Abstract

We present results from multiple comprehensive models used to simulate an aggressive mitigation scenario based on detailed results of an Integrated Assessment Model. The experiment employs ten global climate and Earth System models (GCMs and ESMs) and pioneers elements of the long-term experimental design for the forthcoming 5th Intergovernmental Panel on Climate Change assessment. Atmospheric carbon-dioxide concentrations pathways rather than carbon emissions are specified in all models, including five ESMs that contain interactive carbon cycles. Specified forcings also include minor greenhouse gas concentration pathways, ozone concentration, aerosols (via concentrations or precursor emissions) and land use change (in five models). The new aggressive mitigation scenario (E1), constructed using an integrated assessment model (IMAGE 2.4) with reduced fossil fuel use for energy production aimed at stabilizing global warming below 2 K, is studied alongside the medium-high non-mitigation scenario SRES A1B. Resulting twenty-first century global mean warming and precipitation changes for A1B are broadly consistent with previous studies. In E1 twenty-first century global warming remains below 2 K in most models, but global mean precipitation changes are higher than in A1B up to 2065 and consistently higher per degree of warming. The spread in global temperature and precipitation responses is partly attributable to inter-model variations in aerosol loading and representations of aerosol-related radiative forcing effects. Our study illustrates that the benefits of mitigation will not be realised in temperature terms until several decades after emissions reductions begin, and may vary considerably between regions. A subset of the models containing integrated carbon cycles agree that land and ocean sinks remove roughly half of present day anthropogenic carbon emissions from the atmosphere, and that anthropogenic carbon emissions must decrease by at least 50% by 2050 relative t

Published
2011

8. Climate Change under aggressive mitigation: The ENSEMBLES multi-model experiment

Author

Environmental Sciences, Section Environmental Sciences, Johns, T.C., Royer, J.F., Hoeschel, I., Huebener, H., Roeckner, E., Manzini, E., May, W., Dufresne, J.L., Ottera, O.H., van Vuuren, D.P., Salas y Melia, D., Giorgetta, M.A., Denvil, S., Yang, S., Fogli, P.G., Koerper, J., Tjiputra, J.F., Stehfest, E., Hewitt, C.D., Environmental Sciences, Section Environmental Sciences, Johns, T.C., Royer, J.F., Hoeschel, I., Huebener, H., Roeckner, E., Manzini, E., May, W., Dufresne, J.L., Ottera, O.H., van Vuuren, D.P., Salas y Melia, D., Giorgetta, M.A., Denvil, S., Yang, S., Fogli, P.G., Koerper, J., Tjiputra, J.F., Stehfest, E., and Hewitt, C.D.

Published
2011

9. Erratum to: Climate change under aggressive mitigation: The ENSEMBLES multi-model experiment

Author

Environmental Sciences, Section Environmental Sciences, Johns, T.C., Royer, J.F., Hoeschel, I., Huebener, H., Roeckner, E., Manzini, E., May, W., Dufresne, J.L., Ottera, O.H., van Vuuren, D.P., Salas y Melia, D., Giorgetta, M.A., Denvil, S., Yang, S., Fogli, P.G., Koerper, J., Tjiputra, J.F., Stehfest, E., Hewitt, C.D., Environmental Sciences, Section Environmental Sciences, Johns, T.C., Royer, J.F., Hoeschel, I., Huebener, H., Roeckner, E., Manzini, E., May, W., Dufresne, J.L., Ottera, O.H., van Vuuren, D.P., Salas y Melia, D., Giorgetta, M.A., Denvil, S., Yang, S., Fogli, P.G., Koerper, J., Tjiputra, J.F., Stehfest, E., and Hewitt, C.D.

Published
2011

10. Estimating shortwave radiative forcing and response in climate models

Author

UCL - SC/PHYS - Département de physique, Taylor, K.E., Crucifix, Michel, Braconnot, P., Hewitt, C.D., Doutriaux, C., Broccoli, A.J., Mitchell, J.F.B., Webb, M.J., UCL - SC/PHYS - Département de physique, Taylor, K.E., Crucifix, Michel, Braconnot, P., Hewitt, C.D., Doutriaux, C., Broccoli, A.J., Mitchell, J.F.B., and Webb, M.J.

Published
2007

11. Past and future polar amplifications of climate change: climate model intercomparisons and ice-core constraints : [Publisher's Erratum]

Author

Masson-Delmotte, V., Kageyama, M., Braconnot, P., Charbit, S., Krinner, G., Ritz, C., Guilyardi, E., Jouzel, J., Abe-Ouchi, A., Crucifix, M.; Gladstone, Hewitt, C.D.; Kitoh, Merkel, Ute, Motoi, T.; Ohgaito, Yu, Y., Masson-Delmotte, V., Kageyama, M., Braconnot, P., Charbit, S., Krinner, G., Ritz, C., Guilyardi, E., Jouzel, J., Abe-Ouchi, A., Crucifix, M.; Gladstone, Hewitt, C.D.; Kitoh, Merkel, Ute, Motoi, T.; Ohgaito, and Yu, Y.

Published
2006

12. Past and future polar amplifications of climate change: climate model intercomparisons and ice-core constraints

Author

Masson-Delmotte, V., Kageyama, M., Braconnot, P., Charbit, S., Krinner, G., Ritz, C., Guilyardi, E., Jouzel, J., Abe-Ouchi, A., Crucifix, M ., Gladstone, R.M., Hewitt, C.D., Kitoh, A., LeGrande, A. N., Marti, O., Merkel, Ute, Motoi, T., Ohgaito, R., Otto-Bliesner, B., Peltier, W.R., Ross, I., Valdes, P. J., Vettoretti, G., Weber, S.L., Wolk, F., Masson-Delmotte, V., Kageyama, M., Braconnot, P., Charbit, S., Krinner, G., Ritz, C., Guilyardi, E., Jouzel, J., Abe-Ouchi, A., Crucifix, M ., Gladstone, R.M., Hewitt, C.D., Kitoh, A., LeGrande, A. N., Marti, O., Merkel, Ute, Motoi, T., Ohgaito, R., Otto-Bliesner, B., Peltier, W.R., Ross, I., Valdes, P. J., Vettoretti, G., Weber, S.L., and Wolk, F.

Abstract

Climate model simulations available from the PMIP1, PMIP2 and CMIP (IPCC-AR4) intercomparison projects for past and future climate change simulations are examined in terms of polar temperature changes in comparison to global temperature changes and with respect to pre-industrial reference simulations. For the mid-Holocene (MH, 6,000 years ago), the models are forced by changes in the Earth’s orbital parameters. The MH PMIP1 atmosphere-only simulations conducted with sea surface temperatures fixed to modern conditions show no MH consistent response for the poles, whereas the new PMIP2 coupled atmosphere–ocean climate models systematically simulate a significant MH warming both for Greenland (but smaller than ice-core based estimates) and Antarctica (consistent with the range of ice-core based range). In both PMIP1 and PMIP2, the MH annual mean changes in global temperature are negligible, consistent with the MH orbital forcing. The simulated last glacial maximum (LGM, 21,000 years ago) to pre-industrial change in global mean temperature ranges between 3 and 7°C in PMIP1 and PMIP2 model runs, similar to the range of temperature change expected from a quadrupling of atmospheric CO2 concentrations in the CMIP simulations. Both LGM and future climate simulations are associated with a polar amplification of climate change. The range of glacial polar amplification in Greenland is strongly dependent on the ice sheet elevation changes prescribed to the climate models. All PMIP2 simulations systematically underestimate the reconstructed glacial–interglacial Greenland temperature change, while some of the simulations do capture the reconstructed glacial–interglacial Antarctic temperature change. Uncertainties in the prescribed central ice cap elevation cannot account for the temperature change underestimation by climate models. The variety of climate model sensitivities enables the exploration of the relative changes in polar temperature with respect to changes in global tempe

Published
2006
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