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Your search keyword '"Gaertner, M. A."' showing total 4 results
Start Over Author "Gaertner, M. A." Topic climate change
4 results on '"Gaertner, M. A."'

2. Consistency of climate change projections from multiple global and regional model intercomparison projects.

Author

Fernández, J., Frías, M. D., Cabos, W. D., Cofiño, A. S., Domínguez, M., Fita, L., Gaertner, M. A., García-Díez, M., Gutiérrez, J. M., Jiménez-Guerrero, P., Liguori, G., Montávez, J. P., Romera, R., and Sánchez, E.

Subjects
CLIMATE change, ATMOSPHERIC models, METEOROLOGICAL precipitation, ATMOSPHERIC temperature
Abstract

We present an unprecedented ensemble of 196 future climate projections arising from different global and regional model intercomparison projects (MIPs): CMIP3, CMIP5, ENSEMBLES, ESCENA, EURO- and Med-CORDEX. This multi-MIP ensemble includes all regional climate model (RCM) projections publicly available to date, along with their driving global climate models (GCMs). We illustrate consistent and conflicting messages using continental Spain and the Balearic Islands as target region. The study considers near future (2021-2050) changes and their dependence on several uncertainty sources sampled in the multi-MIP ensemble: GCM, future scenario, internal variability, RCM, and spatial resolution. This initial work focuses on mean seasonal precipitation and temperature changes. The results show that the potential GCM-RCM combinations have been explored very unevenly, with favoured GCMs and large ensembles of a few RCMs that do not respond to any ensemble design. Therefore, the grand-ensemble is weighted towards a few models. The selection of a balanced, credible sub-ensemble is challenged in this study by illustrating several conflicting responses between the RCM and its driving GCM and among different RCMs. Sub-ensembles from different initiatives are dominated by different uncertainty sources, being the driving GCM the main contributor to uncertainty in the grand-ensemble. For this analysis of the near future changes, the emission scenario does not lead to a strong uncertainty. Despite the extra computational effort, for mean seasonal changes, the increase in resolution does not lead to important changes. [ABSTRACT FROM AUTHOR]

Published
2019
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3. Impacts of a change in vegetation description on simulated European summer present-day and future climates.

Author

Sánchez, E., Gaertner, M. A., Gallardo, C., Padorno, E., Arribas, A., and Castro, M.

Subjects
*VEGETATION & climate, *CLIMATOLOGY, *SUMMER, *METEOROLOGICAL precipitation, *CLIMATE change
Abstract

This paper analyzes the soil–atmosphere feedbacks and uncertainties under current (1960–1990) and plausible future climate conditions (2070–2100, using the A2 greenhouse gases emission scenario). For this purpose, two vegetation descriptions differing only in the grassland and grass-with-trees proportion in some parts of the domain have been created. The combination of these two different climate scenarios and two vegetation descriptions defines four different 30-year experiments, which have been completed using a regional climate model. The domain is centered around the Mediterranean basin and covers most of Europe. The study focuses on the summer season when there are major differences between the two vegetation descriptions and when the impact of land–surface processes on precipitation is largest. Present climate experiments show large evapotranspiration differences over areas where vegetation changes have taken place. Precipitation increases (up to 3 mm day−1 in some regions) follow evapotranspiration increases, although with a more complex spatial structure. These results indicate a high sensitivity at regional scales of summer precipitation processes to vegetation changes. Future climate simulations show very similar changes to those observed in the current climate experiments. This indicates that the impacts of climate change are relatively independent to the land-cover descriptions used in this study. [ABSTRACT FROM AUTHOR]

Published
2007
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4. MED-CORDEX initiative for Mediterranean Climate studies

Author

Pierre Nabat, Samuel Somot, Vassilios Vervatis, Vladimir Djurdjevic, Bodo Ahrens, Florence Sevault, Gabriel Jordá, Alessandro Dell'Aquila, Barış Önol, Piero Lionello, Gianmaria Sannino, Giovanni Liguori, P. Galàn, Jennifer Brauch, Naveed Akhtar, Anika Obermann, Karim Ramage, Paolo Ruti, Dario Conte, Thomas Arsouze, Silvio Gualdi, Csaba Torma, Diego Macías, Sophie Bastin, Adriana Carillo, William Cabos, Oriol Jorba, Lu Li, Filippo Giorgi, Blandine L'Hévéder, M. V. Struglia, Cindy Lebeaupin-Brossier, Miguel Ángel Gaertner, Giovanna Pisacane, Ali Harzallah, Jean-Christophe Calvet, Sandro Calmanti, Clemente Gallardo, Erika Coppola, Judit Bartholy, Philippe Drobinski, M. Gonçalves, A. Elizalde-Arellano, Sophie Bouffies-Cloché, Antonella Sanna, B. Raikovic, Jonathan Beuvier, Roland Aznar, Karine Béranger, Emmanouil Flaounas, Clotilde Dubois, Antoinette Alias, E. Lombardi, World Meteorological Organization (WMO), 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), Abdus Salam International Centre for Theoretical Physics [Trieste] (ICTP), National Observatory of Athens (NOA), Institut für Atmosphäre und Umwelt [Frankfurt/Main] (IAU), Goethe-Universität Frankfurt am Main, ENEA Ente per le Nuove Technologie Energia e Ambiente, Centro Ricerche Casaccia, Centro Ricerche Casaccia, Institut National des Sciences et Technologies de la Mer [Salammbô] (INSTM), Unité de Mécanique (UME), École Nationale Supérieure de Techniques Avancées (ENSTA Paris), Puertos de l’Estado, SPACE - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Department of Meteorology [Budapest], Institute of Geography and Earth Sciences [Budapest], Faculty of Sciences [Budapest], Eötvös Loránd University (ELTE)-Eötvös Loránd University (ELTE)-Faculty of Sciences [Budapest], Eötvös Loránd University (ELTE)-Eötvös Loránd University (ELTE), Universidad de Alcalá - University of Alcalá (UAH), Euro-Mediterranean Center on Climate Change (CMCC), University of Belgrade [Belgrade], Laboratoire de Météorologie Dynamique (UMR 8539) (LMD), 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), Max-Planck-Institut für Meteorologie (MPI-M), Max-Planck-Gesellschaft, Instituto de Ciencias Ambientales [Toledo] (ICAM), Universidad de Castilla-La Mancha = University of Castilla-La Mancha (UCLM), Universidad Politécnica de Madrid (UPM), Universitat Politècnica de Catalunya [Barcelona] (UPC), Barcelona Supercomputing Center - Centro Nacional de Supercomputacion (BSC - CNS), Institut Mediterrani d'Estudis Avancats (IMEDEA), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Universidad de las Islas Baleares (UIB), École polytechnique (X), Department of Physics [Lecce], Università del Salento [Lecce], JRC Institute for Environment and Sustainability (IES), European Commission - Joint Research Centre [Ispra] (JRC), Istanbul Technical University (ITÜ), Faculty of Physics and Meteorology [Belgrade], 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)-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), Agenzia Nazionale per le nuove Tecnologie, l’energia e lo sviluppo economico sostenibile = Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), National and Kapodistrian University of Athens (NKUA), Agence Nationale de la Recherche (ANR)European Commission (CLIMRUN Project), ANR-12-SENV-0001,REMEMBER,Compréhension et modélisation du système climatique régional couplé pour la prévention des risques hydrométéorologiques en Méditerranée dans un contexte de changement global(2012), 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), 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), Universidad de Castilla-La Mancha (UCLM), Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció, Universitat Politècnica de Catalunya. GReCT - Grup de Recerca de Ciències de la Terra, Ruti, P. M., Somot, S., Giorgi, F., Dubois, C., Flaounas, E., Obermann, A., Dell’Aquila, A., Pisacane, G., Harzallah, A., Lombardi, E., Ahrens, B., Akhtar, N., Alias, A., Arsouze, T., Aznar, R., Bastin, S., Bartholy, J., Béranger, K., Beuvier, J., Bouffies Cloché, S., Brauch, J., Cabos, W., Calmanti, S., Calvet, J. C., Carillo, A., Conte, Dario, Coppola, E., Djurdjevic, V., Drobinski, P., Elizalde Arellano, A., Gaertner, M., Galàn, P., Gallardo, C., Gualdi, S., Goncalves, M., Jorba, O., Jordà, G., L’Heveder, B., Lebeaupin Brossier, C., Li, L., Liguori, G., Lionello, Piero, Maciàs, D., Nabat, P., Önol, B., Raikovic, B., Ramage, K., Sevault, F., Sannino, G., Struglia, M. V., Sanna, A., Torma, C., Vervatis, V., and European Commission

Subjects
Mediterranean climate, Atmospheric Science, 010504 meteorology & atmospheric sciences, Climatologia -- Models matemàtics, 0208 environmental biotechnology, Environmental system, Vulnerability, Spatial and temporal scale, Climate change, Biogeochemical proce, 02 engineering and technology, Climatology--Simulation methods, 01 natural sciences, Regional climate model, Desenvolupament humà i sostenible::Prospectiva, sistèmica i modelització [Àrees temàtiques de la UPC], 11. Sustainability, Added value, Precipitation, Mediterranean Region--Climate, Mediterranean region, Temporal scales, 0105 earth and related environmental sciences, Previsió del temps, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], Mediterrània, Regió -- Clima, business.industry, Environmental resource management, Desenvolupament humà i sostenible::Degradació ambiental::Canvi climàtic [Àrees temàtiques de la UPC], Climatologia -- Mètodes de simulació, 15. Life on land, Regional climate simulation, 020801 environmental engineering, Earth system science, 13. Climate action, Regional downscaling, [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology, Climatology, Environmental science, Climate model, business
Abstract

The Mediterranean is expected to be one of the most prominent and vulnerable climate change >hotspots> of the twenty-first century, and the physical mechanisms underlying this finding are still not clear. Furthermore, complex interactions and feedbacks involving ocean-atmosphere-land-biogeochemical processes play a prominent role in modulating the climate and environment of the Mediterranean region on a range of spatial and temporal scales. Therefore, it is critical to provide robust climate change information for use in vulnerability-impact-adaptation assessment studies considering the Mediterranean as a fully coupled environmental system. The Mediterranean Coordinated Regional Downscaling Experiment (Med-CORDEX) initiative aims at coordinating the Mediterranean climate modeling community toward the development of fully coupled regional climate simulations, improving all relevant components of the system from atmosphere and ocean dynamics to land surface, hydrology, and biogeochemical processes. The primary goals of Med-CORDEX are to improve understanding of past climate variability and trends and to provide more accurate and reliable future projections, assessing in a quantitative and robust way the added value of using high-resolution and coupled regional climate models. The coordination activities and the scientific outcomes of Med-CORDEX can produce an important framework to foster the development of regional Earth system models in several key regions worldwide., This work is a contribution to the HyMeX program supported by grants MISTRALS and ANR-12-SENV-001 REMEMBER and to the CLIMRUN project (www.climrun.eu) funded under the European Commission’s Seventh Framework Programme (FP7).

Published
2016
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