Now showing items 1-19 of 19

    • An anatomy of Arctic sea ice forecast biases in the seasonal prediction system with EC-Earth 

      Cruz-García, Rubén; Ortega Montilla, Pablo; Guemas, Virginie; Acosta Navarro, Juan Camilo; Massonnet, François; Doblas-Reyes, Francisco (Springer Link, 2021)
      Article
      Open Access
      The quality of initial conditions (ICs) in climate predictions controls the level of skill. Both the use of the latest high-quality observations and of the most efficient assimilation method are of paramount importance. ...
    • An assessment of regional sea ice predictability in the Arctic ocean 

      Cruz-García, Rubén; Guemas, Virginie; Chevallier, Matthieu; Massonnet, François (Springer, 2019-07)
      Article
      Open Access
      Arctic sea ice plays a central role in the Earth’s climate. Changes in the sea ice on seasonal-to-interannual timescales impact ecosystems, populations and a growing number of stakeholders. A prerequisite for achieving ...
    • An assessment of regional sea ice predictability in the Arctic ocean 

      Cruz-García, Rubén; Guemas, Virginie; Chevallier, Matthieu; Massonnet, François (Barcelona Supercomputing Center, 2018-04-24)
      Conference report
      Open Access
    • An assessment of ten ocean reanalyses in the polar regions 

      Uotila, Petteri; Goosse, Hugues; Haines, Keith; Chevallier, Matthieu; Barthélemy, Antoine; Bricaud, Clément; Carton, Jim; Fuckar, Neven; Garric, Gilles; Iovino, Doroteaciro; Kauker, Frank; Korhonen, Meri; Lien, Vidar S.; Marnela, Marika; Massonnet, François; Mignac, Davi; Peterson, K. Andrew; Sadikni, Remon; Shi, Li; Tietsche, Steffen; Toyoda, Takahiro; Xie, Jiping; Zhang, Zhaoru (Springer, 2019-02)
      Article
      Open Access
      Global and regional ocean and sea ice reanalysis products (ORAs) are increasingly used in polar research, but their quality remains to be systematically assessed. To address this, the Polar ORA Intercomparison Project ...
    • Arctic sea-ice change tied to its mean state through thermodynamic processes 

      Massonnet, François; Vancoppenolle, Martin; Goosse, Hugues; Docquier, David; Fichefet, Thierry; Blanchard-Wrigglesworth, Edward (Nature Publishing Group, 2018-06-18)
      Article
      Open Access
      One of the clearest manifestations of ongoing global climate change is the dramatic retreat and thinning of the Arctic sea-ice cover. While all state-of-the-art climate models consistently reproduce the sign of these ...
    • Benefits of Increasing the Model Resolution for the Seasonal Forecast Quality in EC-Earth 

      Prodhomme, Chloé; Batté, L.; Massonnet, François; Davini, P.; Bellprat, Omar; Guemas, Virginie; Doblas-Reyes, Francisco (American Meteorological Society, 2016-12-05)
      Article
      Open Access
      Resolution in climate models is thought to be an important factor for advancing seasonal prediction capability. To test this hypothesis, seasonal ensemble reforecasts are conducted over 1993–2009 with the European community ...
    • Earth System Model Evaluation Tool (ESMValTool) v2.0 – an extended set of large-scale diagnostics for quasi-operational and comprehensive evaluation of Earth system models in CMIP 

      Eyring, Veronika; Bock, Lisa; Lauer, Axel; Righi, Mattia; Schlund, Manuel; Andela, Bouwe; Arnone, Enrico; Bellprat, Omar; Brötz, Björn; Caron, Louis-Philippe; Carvalhais, Nuno; Cionni, Irene; Cortesi, Nicola; Crezee, Bas; Davin, Edouard L.; Davini, Paolo; Debeire, Kevin; Mora, Lee, de; Deser, Clara; Docquier, David; Earnshaw, Paul; Ehbrecht, Carsten; Gier, Bettina K.; Gonzalez-Reviriego, Nube; Goodman, Paul; Hagemann, Stefan; Hardiman, Steven; Hassler, Birgit; Hunter, Alasdair; Kadow, Christopher; Kindermann, Stephan; Koirala, Sujan; Koldunov, Nikolay; Lejeune, Quentin; Lembo, Valerio; Lovato, Tomas; Lucarini, Valerio; Massonnet, François; Müller, Benjamin; Pandde, Amarjiit; Pérez-Zanón, Núria; Phillips, Adam; Predoi, Valeriu; Russell, Joellen; Sellar, Alistair; Serva, Federico; Stacke, Tobias; Swaminathan, Ranjini; Torralba, Verónica; Vegas-Regidor, Javier; Hardenberg, Jost, von; Weigel, Katja; Zimmermann, Klaus (Copernicus Publications, 2020)
      Article
      Open Access
      The Earth System Model Evaluation Tool (ESMValTool) is a community diagnostics and performance metrics tool designed to improve comprehensive and routine evaluation of Earth system models (ESMs) participating in the Coupled ...
    • Impact of the ice thickness distribution discretization on the sea ice concentration variability in the NEMO3.6–LIM3 global ocean–sea ice model 

      Moreno Chamarro, Eduardo; Ortega Montilla, Pablo; Massonnet, François (Copernicus Publications, 2020-10-05)
      Article
      Open Access
      This study assesses the impact of different sea ice thickness distribution (ITD) discretizations on the sea ice concentration (SIC) variability in ocean stand-alone NEMO3.6–LIM3 simulations. Three ITD discretizations with ...
    • Link between autumnal Arctic Sea ice and Northern Hemisphere winter forecast skill 

      Acosta Navarro, Juan C.; Ortega, Pablo; Batté, Lauriane; Smith, Doug; Bretonnière, Pierre-Antoine; Guemas, Virginie; Massonnet, François; Sicardi, Valentina; Torralba, Veronica; Tourigny, Etienne; Doblas-Reyes, Francisco (American Geophysical Union (AGU), 2020-02-28)
      Article
      Open Access
      Dynamical forecast systems have low to moderate skill in continental winter predictions in the extratropics. Here we assess the multimodel predictive skill over Northern Hemisphere high latitudes and midlatitudes using ...
    • Making seasonal outlooks of Arctic Sea ice and Atlantic hurricanes valuable—not just skillful 

      Caron, Louis-Philippe; Massonnet, François; Klotzbach, Phillip; Philp, Tom J; Stroeve, Julienne (American Meteorological Society, 2020-01)
      Article
      Open Access
      In recent years, a big effort has been made by part of the climate community toward the development of climate services in order to make climate information decision oriented. In a climate forecasting context, this means ...
    • On the discretization of the ice thickness distribution in the NEMO3.6-LIM3 global ocean–sea ice model 

      Massonnet, François; Barthélemy, Antoine; Worou, Koffi; Fichefet, Thierry; Vancoppenolle, Martin; Rousset, Clément; Moreno-Chamarro, Eduardo (European Geosciences Union (EGU), 2019-08-27)
      Article
      Open Access
      The ice thickness distribution (ITD) is one of the core constituents of modern sea ice models. The ITD accounts for the unresolved spatial variability of sea ice thickness within each model grid cell. While there is a ...
    • Quantifying climate feedbacks in polar regions 

      Goosse, Hugues; Kay, Jennifer E.; Armour, Kyle C.; Bodas-Salcedo, Alejandro; Chepfer, Helene; Docquier, David; Jonko, Alexandra; Kushner, Paul J.; Lecomte, Olivier; Massonnet, François; Park, Hyo-Seok; Pithan, Felix; Svensson, Gunilla; Vancoppenolle, Martin (Nature Publishing Group, 2018-05-15)
      Article
      Open Access
      The concept of feedback is key in assessing whether a perturbation to a system is amplified or damped by mechanisms internal to the system. In polar regions, climate dynamics are controlled by both radiative and non-radiative ...
    • Re-interpreting thermodynamic Arctic sea ice feedbacks 

      Massonnet, François (Barcelona Supercomputing Center, 2018)
      Conference report
      Open Access
    • Record low northern hemisphere sea ice extent in March 2015 

      Fuckar, Neven S.; Massonnet, François; Guemas, Virginie; Garcia-Serrano, Javier; Omar, Bellprat; Doblas-Reyes, Francisco; Acosta, Mario (American Meteorological Society, 2016-12-01)
      Article
      Open Access
      The record low Northern Hemisphere (NH) winter sea ice maximum stemmed from a strong interannual surface anomaly in the Pacific sector, but it would not have been reached without long-term climate change.
    • Relationships between Arctic sea ice drift and strength modelled by NEMO-LIM3.6 

      Docquier, David; Massonnet, François; Barthélemy, Antoine; Tandon, Neil F.; Lecomte, Olivier; Fichelet, Thierry (European Geosciences Union (EGU), 2017-12-12)
      Article
      Open Access
      Sea ice cover and thickness have substantially decreased in the Arctic Ocean since the beginning of the satellite era. As a result, sea ice strength has been reduced, allowing more deformation and fracturing and leading ...
    • Relationships between Arctic sea ice drift and strength modelled by NEMO-LIM3.6 

      Docquier, David; Massonnet, François; Tandon, Neil F.; Lecomte, Olivier; Fichefet, Thierry (European Geosciences Union (EGU), 2017-12-11)
      Article
      Open Access
      Sea ice cover and thickness have substantially decreased in the Arctic Ocean since the beginning of the satellite era. As a result, sea ice strength has been reduced, allowing more deformation and fracturing and leading ...
    • Replicability of the EC-Earth3 Earth system model under a change in computing environment 

      Massonnet, François; Menegoz, Martín; Acosta Cobos, Mario César; Yepes-Arbós, Xavier; Exarchou, Eleftheria; Doblas Reyes, Francisco (2020-03-12)
      Article
      Open Access
      Most Earth system models (ESMs) are running under different high-performance computing (HPC) environments. This has several advantages, from allowing different groups to work with the same tool in parallel to leveraging ...
    • The Role of Arctic Sea Ice and Sea Surface Temperatures on the Cold 2015 February Over North America 

      Bellprat, Omar; Massonnet, François; Garcia-Serrano, Javier; Fuckar, Neven S.; Guemas, Virginie; Doblas-Reyes, Francisco (American Meteorological Society, 2016-12-01)
      Article
      Open Access
      The cold spell of February 2015 in North America was predominantly internally generated; reduced Arctic sea ice and anomalous sea surface temperatures may have contributed in establishing and sustaining the anomalous flow.
    • Using EC-Earth for climate prediction research 

      Doblas Reyes, Francisco; Acosta Navarro, Juan Camilo; Acosta Cobos, Mario César; Bellprat, Omar; Bilbao, Roberto; Castrillo Melguizo, Miguel; Fuckar, Neven; Guemas, Virginie; Lledó Ponsati, Llorenç; Menegoz, Martín; Prodhomme, Chloe; Serradell Maronda, Kim; Tintó Prims, Oriol; Batté, Lauriane; Volpi, Danila; Ceglar, Andrej; Haarsma, Rein; Massonnet, François (European Centre for Medium-Range Weather Forecasts (ECMWF), 2018)
      Article
      Open Access
      Climate prediction at the subseasonal to interannual time range is now performed routinely and operationally by an increasing number of institutions. The feasibility of climate prediction largely depends on the existence ...