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2. Simulation of the 2005 and 2006 West African Monsoon: preliminary results on the effects of solar, SST and large scale forcings

Author

Flaounas, E., Bastin, S., Institut Pierre-Simon-Laplace (IPSL), École normale supérieure - Paris (ENS-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]Sciences of the Universe [physics]
Abstract

International audience; In this study we use regional modeling to detect the onset of the West African Monsoon (WAM). We use the Weather, Research and Forecasting (WRF) model in order to simulate two contrasting years: 2005 and 2006 for which the difference of the timing of the WAM onset (abrupt displacement of the ITCZ from 5°N to 10°N approximately) is significant (larger than the climatological variance) and is associated with a delay of the presence of the cold tongue in the Gulf of Guinea. 2006 is used as the reference year since the Special Observing Period (SOP) of the AMMA experiment is helpful to evaluate the model's ability to simulate the WAM dynamics. To evaluate the relative importance of the processes implicated in the WAM dynamics, we perform three simulations in which we shift one of the SST, large scale or solar forcings at a time by fifteen days. We then compare the timing of the onset, the location and intensity of the precipitations. The diagnostic we use for the onset detection is based on the seasonal and latitudinal variability of the precipitation as the WAM onset is signaled by a considerable decrease of convection which lasts a few days and thereafter by a northerly displacement of the ITCZ. Our domain of interest extends from 40 °W to 40 °E and from 20 °S to 50 °N with an horizontal resolution of 40km. The first results show a great sensitivity of the model to the large scale forcing which also seems to mainly control the timing of the onset. Moreover, the temperature gradient between the sea and the land seems to have limited impact on the timing of the WAM onset, but it mainly controls the inland humidity advection and in consequence the intensity and localization of rainfall. To confirm these results, we will apply the SST forcing of 2005 on simulation of 2006 and vice-versa to determine the connection between the SST of the Guinean Gulf and the WAM onset.

Published
2023

3. A composite approach to produce reference datasets for extratropical cyclone tracks: application to Mediterranean cyclones

Author

Flaounas, E, Aragão, L, Bernini, L, Dafis, S, Doiteau, B, Flocas, H, Gray, S, Karwat, A, Kouroutzoglou, J, Lionello, P, Miglietta, M, Pantillon, F, Pasquero, C, Patlakas, P, Picornell, M, Porcù, F, Priestley, M, Reale, M, Roberts, M, Saaroni, H, Sandler, D, Scoccimarro, E, Sprenger, M, Ziv, B, Flaounas, Emmanouil, Aragão, Leonardo, Bernini, Lisa, Dafis, Stavros, Doiteau, Benjamin, Flocas, Helena, Gray, Suzanne L., Karwat, Alexia, Kouroutzoglou, John, Lionello, Piero, Miglietta, Mario Marcello, Pantillon, Florian, Pasquero, Claudia, Patlakas, Platon, Picornell, María Ángeles, Porcù, Federico, Priestley, Matthew D. K., Reale, Marco, Roberts, Malcolm J., Saaroni, Hadas, Sandler, Dor, Scoccimarro, Enrico, Sprenger, Michael, Ziv, Baruch, Flaounas, E, Aragão, L, Bernini, L, Dafis, S, Doiteau, B, Flocas, H, Gray, S, Karwat, A, Kouroutzoglou, J, Lionello, P, Miglietta, M, Pantillon, F, Pasquero, C, Patlakas, P, Picornell, M, Porcù, F, Priestley, M, Reale, M, Roberts, M, Saaroni, H, Sandler, D, Scoccimarro, E, Sprenger, M, Ziv, B, Flaounas, Emmanouil, Aragão, Leonardo, Bernini, Lisa, Dafis, Stavros, Doiteau, Benjamin, Flocas, Helena, Gray, Suzanne L., Karwat, Alexia, Kouroutzoglou, John, Lionello, Piero, Miglietta, Mario Marcello, Pantillon, Florian, Pasquero, Claudia, Patlakas, Platon, Picornell, María Ángeles, Porcù, Federico, Priestley, Matthew D. K., Reale, Marco, Roberts, Malcolm J., Saaroni, Hadas, Sandler, Dor, Scoccimarro, Enrico, Sprenger, Michael, and Ziv, Baruch

Abstract

Many cyclone detection and tracking methods (CDTMs) have been developed in the past to study the climatology of extratropical cyclones. However, all CDTMs have different approaches in defining and tracking cyclone centers. This naturally leads to cyclone track climatologies with inconsistent physical characteristics. More than that, it is typical for CDTMs to produce a non-negligible number of tracks of weak atmospheric features, which do not correspond to large-scale or mesoscale vortices and can differ significantly between CDTMs. Lack of consensus in CDTM outputs and the inclusion of significant numbers of uncertain tracks therein have long prohibited the production of a commonly accepted reference dataset of extratropical cyclone tracks. Such a dataset could allow comparable results on the analysis of storm track climatologies and could also contribute to the evaluation and improvement of CDTMs. To cover this gap, we present a new methodological approach that combines overlapping tracks from different CDTMs and produces composite tracks that concentrate the agreement of more than one CDTM. In this study we apply this methodology to the outputs of 10 well-established CDTMs which were originally applied to ERA5 reanalysis in the 42-year period of 1979-2020. We tested the sensitivity of our results to the spatiotemporal criteria that identify overlapping cyclone tracks, and for benchmarking reasons, we produced five reference datasets of subjectively tracked cyclones. Results show that climatological numbers of composite tracks are substantially lower than the ones of individual CDTMs, while benchmarking scores remain high (i.e., counting the number of subjectively tracked cyclones captured by the composite tracks). Our results show that composite tracks tend to describe more intense and longer-lasting cyclones with more distinguished early, mature and decay stages than the cyclone tracks produced by individual CDTMs. Ranking the composite tracks according to their

Published
2023

4. MED-CORDEX INITIATIVE FOR MEDITERRANEAN CLIMATE STUDIES

Author

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, D., 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, P., Maciàs, D., Nabat, P., Önol, B., Raikovic, B., Ramage, K., Sevault, F., Sannino, G., Struglia, M. V., Sanna, A., Torma, C., and Vervatis, V.

Published
2016

5. Future projections of Mediterranean cyclone characteristics using the Med-CORDEX ensemble of coupled regional climate system models

Author

Reale, M, Cabos Narvaez, WD, Cavicchia, L, Conte, D, Coppola, E, Flaounas, E, Giorgi, F, Gualdi, S, Hochman, A, Li, L, Lionello, P, Podrascanin, Z, Salon, S, Sanchez-Gomez, E, Scoccimarro, E, Sein, D, Somot, S, Reale, M, Cabos Narvaez, WD, Cavicchia, L, Conte, D, Coppola, E, Flaounas, E, Giorgi, F, Gualdi, S, Hochman, A, Li, L, Lionello, P, Podrascanin, Z, Salon, S, Sanchez-Gomez, E, Scoccimarro, E, Sein, D, and Somot, S

Abstract

Here, we analyze future projections of cyclone activity in the Mediterranean region at the end of the twenty-first century based on an ensemble of state-of-the-art fully-coupled Regional Climate System Models (RCSMs) from the Med-CORDEX initiative under the Representative Concentration Pathway (RCP) 8.5. Despite some noticeable biases, all the RCSMs capture spatial patterns and cyclone activity key characteristics in the region and thus all of them can be considered as plausible representations of the future evolution of Mediterranean cyclones. In general, the RCSMs show at the end of the twenty-first century a decrease in the number and an overall weakening of cyclones moving across the Mediterranean. Five out of seven RCSMs simulate also a decrease of the mean size of the systems. Moreover, in agreement with what already observed in CMIP5 projections for the area, the models suggest an increase in the Central part of the Mediterranean region and a decrease in the South-eastern part of the region in the cyclone-related wind speed and precipitation rate. These rather two opposite tendencies observed in the precipitation should compensate and amplify, respectively, the effect of the overall reduction of the frequency of cyclones on the water budget over the Central and South-eastern part of the region. A pronounced inter-model spread among the RCSMs emerges for the projected changes in the cyclone adjusted deepening rate, seasonal cycle occurrence and associated precipitation and wind patterns over some areas of the basin such as Ionian Sea and Iberian Peninsula. The differences observed appear to be determined by the driving Global Circulation Model (GCM) and influenced by the RCSM physics and internal variability. These results point to the importance of (1) better characterizing the range of plausible futures by relying on ensembles of models that explore well the existing diversity of GCMs and RCSMs as well as the climate natural variability and (2) bett

Published
2022

8. Med-CORDEX initiative for Mediterranean climate studies

Author

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, D. 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, P. Maciàs, D. Nabat, P. Önol, B. Raikovic, B. Ramage, K. Sevault, F. Sannino, G. Struglia, M.V. Sanna, A. Torma, C. Vervatis, V.

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. ©2016 American Meteorological Society.

Published
2016

9. HyMeX: mid-term program review and perspectives Report of the 9th HyMeX workshop in Mykonos, Greece

Author

Drobinski P., Ducrocq V., Kotroni V., Lagouvardos K., Ahrens B., Anquetin S., Bouin M.N., Braud I., Coppola E., Coquillat S., Davolio S., Delanoé J., Di Girolamo P., Flamant C., Flaounas E., Fourrié N., Garcia-Moya J., Giordani H., Homar V., Jorda G., Kalthoff N., Khodayar S., Llasat C., Lebeaupin-Brossier C., Michel Y., Morin E., Nuissier O., Petrucci O., Polcher J., Quintana-Segui P., Richard E., Sannino G., Somot S., Testor P., Tramblay Y., Ruin I., and Von Schuckmann K.

Subjects
climate change
Abstract

The Hydrological Cycle in the Mediterranean Experiment (HyMeX; Drobinski et al., 2014) is a 10-year (2010-2020) GEWEX Hydroclimatology Panel (GHP) Regional Hydroclimate Project (RHP). Its objectives are to: (i) improve the understanding of the water cycle, with emphasis on extreme events, by monitoring and modeling the Mediterranean coupled system (atmosphere-land-ocean), its variability (from the event scale to the seasonal and interannual scales) and characteristics over one decade in the context of global change; and (ii) evaluate societal and economical vulnerability, and adaptation capacity to extreme meteorological and climate events.

Published
2015

13. Cyclone contribution to the Mediterranean Sea water budget.

Author

Flaounas, E., Luca, A., Drobinski, P., Mailler, S., Arsouze, T., Bastin, S., Beranger, K., and Lebeaupin Brossier, C.

Subjects
*CYCLONES, *SEAWATER, *METEOROLOGICAL precipitation, *EVAPORATION (Meteorology), *OCEAN temperature
Abstract

This paper analyzes the impact of cyclones to the atmospheric components on the Mediterranean Sea Water Budget, namely the cyclones contribution to precipitation and evaporation over the Mediterranean Sea. Three regional simulations were performed with the WRF model for the period 1989-2008. The model was run (1) as a standalone model, (2) coupled with the oceanic model NEMO-MED12 and (3) forced by the smoothed Sea Surface Temperature (SST) fields from the second simulation. Cyclones were tracked in all simulations, and their contribution to the total rainfall and evaporation was quantified. Results show that cyclones are mainly associated with extreme precipitation, representing more than 50 % of the annual rainfall over the Mediterranean Sea. On the other hand, we found that cyclone-induced evaporation represents only a small fraction of the annual total, except in winter, when the most intense Mediterranean cyclones take place. Despite the significant contribution of cyclones to rainfall, our results show that there is a balance between cyclone-induced rainfall and evaporation, suggesting a weak net impact of cyclones on the Mediterranean Sea water budget. The sensitivity of our results with respect to rapid SST changes during the development of cyclones was also investigated. Both rainfall and evaporation are affected in correlation with the SST response to the atmosphere. In fact, air feedbacks to the Mediterranean Sea during the cyclones occurrence were shown to cool down the SST and consequently to reduce rainfall and evaporation at the proximity of cyclone centers. [ABSTRACT FROM AUTHOR]

Published
2016
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15. 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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