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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/gmd-2019-37
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-2019-37
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Methods for assessment of models 22 Feb 2019

Methods for assessment of models | 22 Feb 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Geoscientific Model Development (GMD).

TheDiaTo (v1.0) – A new diagnostic tool for water, energy and entropy budgets in climate models

Valerio Lembo1, Frank Lunkeit1, and Valerio Lucarini1,2,3 Valerio Lembo et al.
  • 1Meteorologisches Institut, Universität Hamburg, Hamburg, Germany
  • 2Department of Mathematics and Statistics, University of Reading, Reading, UK
  • 3Centre for the Mathematics of Planet Earth, Department of Mathematics and Statistics, University of Reading, Reading, UK

Abstract. This work presents Thermodynamic Diagnostic Tool (TheDiaTo), a novel diagnostic tool for studying the thermodynamics of the climate systems with a wide range of applications, from sensitivity studies to model tuning. It includes a number of modules for assessing the internal energy budget, the hydrological cycle, the Lorenz Energy Cycle and the material entropy production, respectively. The routine receives as inputs energy fluxes at surface and at the Top-of-Atmosphere (TOA), for the computation of energy budgets at Top-of-Atmosphere (TOA), at the surface, and in the atmosphere as a residual. Meridional enthalpy transports are also computed from the divergence of the zonal mean energy budget fluxes; location and intensity of peaks in the two hemispheres are then provided as outputs. Rainfall, snowfall and latent heat fluxes are received as inputs for computing the water mass and latent energy budgets. If a land-sea mask is provided, the required quantities are separately computed over continents and oceans. The diagnostic tool also computes the Lorenz Energy Cycle (LEC) and its storage/conversion terms as annual mean global and hemispheric values. In order to achieve this, one needs to provide as input three-dimensional daily fields of horizontal wind velocity and temperature in the troposphere. Two methods have been implemented for the computation of the material entropy production, one relying on the convergence of radiative heat fluxes in the atmosphere (indirect method), one combining the irreversible processes occurring in the climate system, particularly heat fluxes in the boundary layer, the hydrological cycle and the kinetic energy dissipation as retrieved from the residuals of the LEC. A version of these diagnostics has been developed as part of the Earth System Model eValuation Tool (ESMValTool) v2.0a1, in order to assess the performances of CMIP6 model simulations, and will be available in the next release of the tool. The aim of this software is to provide a comprehensive picture of the thermodynamics of the climate system as reproduced in the state-of-the-art coupled general circulation models. This can prove useful for better understanding anthropogenic and natural climate change, paleoclimatic climate variability, and climatic tipping points.

Valerio Lembo et al.
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Valerio Lembo et al.
Data sets

BNU-ESM historical Ji, Duoying; Wang, Lanning; Feng, Jinming; Wu, Qizhong; Cheng, Huaqiong https://doi.org/10.1594/WDCC/CMIP5.BUBUhi

BNU-ESM piControl Ji, Duoying; Wang, Lanning; Feng, Jinming; Wu, Qizhong; Cheng, Huaqiong https://doi.org/10.1594/WDCC/CMIP5.BUBUpc

BNU-ESM RCP8.5 Ji, Duoying; Wang, Lanning; Feng, Jinming; Wu, Qizhong; Cheng, Huaqiong https://doi.org/10.1594/WDCC/CMIP5.BUBUr8

CanESM2 historical Canadian Centre for Climate Modelling and Analysis (CCCma) https://doi.org/10.1594/WDCC/CMIP5.CCE2hi

CanESM2 piControl Canadian Centre for Climate Modelling and Analysis (CCCma) https://doi.org/10.1594/WDCC/CMIP5.CCE2pc

CanESM2 RCP8.5 Canadian Centre for Climate Modelling and Analysis (CCCma) https://doi.org/10.1594/WDCC/CMIP5.CCE2r8

IPSL-CM5A-MR historical Foujols, Marie Alice; Denvil, Sébastien; Caubel, Arnaud; Marti, Olivier; Dufresne, Jean-Louis; Bopp, Laurent; Cadule, Patricia; Ethé, Christian; Idelkadi, Abderrahmane; Mancip, Martial; Masson, Sébastien; Mignot, Juliette; Ionela, Musat; Balkanski, Yves; Bekki, Slimane; Bony, Sandrine; Braconnot, Pascale; Brockman, Patrick; Codron, Francis; Cozic, Anne; Cugnet, David; Fairhead, Laurent; Fichefet, Thierry; Flavoni, Simona; Guez, Lionel; Guilyardi, Eric; Hourdin, Frédéric; Ghattas, Josefine; Kageyama, Masa; Khodri, Myriam; Labetoulle, Sonia; Lefebvre, Marie-Pierre; Levy, Claire; Li, Laurent; Lott, Francois; Madec, Gurvan; Marchand, Marion; Meurdesoif, Yann; Rio, Catherine; Schulz, Michael; Swingedouw, Didier; Szopa, Sophie; Viovy, Nicolas; Vuichard, Nicolas https://doi.org/10.1594/WDCC/CMIP5.IPIMhi

IPSL-CM5A-MR piControl Foujols, Marie Alice; Denvil, Sébastien; Caubel, Arnaud; Marti, Olivier; Dufresne, Jean-Louis; Bopp, Laurent; Cadule, Patricia; Ethé, Christian; Idelkadi, Abderrahmane; Mancip, Martial; Masson, Sébastien; Mignot, Juliette; Ionela, Musat; Balkanski, Yves; Bekki, Slimane; Bony, Sandrine; Braconnot, Pascale; Brockman, Patrick; Codron, Francis; Cozic, Anne; Cugnet, David; Fairhead, Laurent; Fichefet, Thierry; Flavoni, Simona; Guez, Lionel; Guilyardi, Eric; Hourdin, Frédéric; Ghattas, Josefine; Kageyama, Masa; Khodri, Myriam; Labetoulle, Sonia; Lefebvre, Marie-Pierre; Levy, Claire; Li, Laurent; Lott, Francois; Madec, Gurvan; Marchand, Marion; Meurdesoif, Yann; Rio, Catherine; Schulz, Michael; Swingedouw, Didier; Szopa, Sophie; Viovy, Nicolas; Vuichard, Nicolas https://doi.org/10.1594/WDCC/CMIP5.IPIMpc

IPSL-CM5A-MR RCP8.5 Foujols, Marie Alice; Denvil, Sébastien; Caubel, Arnaud; Marti, Olivier; Dufresne, Jean-Louis; Bopp, Laurent; Cadule, Patricia; Ethé, Christian; Idelkadi, Abderrahmane; Mancip, Martial; Masson, Sébastien; Mignot, Juliette; Ionela, Musat; Balkanski, Yves; Bekki, Slimane; Bony, Sandrine; Braconnot, Pascale; Brockman, Patrick; Codron, Francis; Cozic, Anne; Cugnet, David; Fairhead, Laurent; Fichefet, Thierry; Flavoni, Simona; Guez, Lionel; Guilyardi, Eric; Hourdin, Frédéric; Ghattas, Josefine; Kageyama, Masa; Khodri, Myriam; Labetoulle, Sonia; Lefebvre, Marie-Pierre; Levy, Claire; Li, Laurent; Lott, Francois; Madec, Gurvan; Marchand, Marion; Meurdesoif, Yann; Rio, Catherine; Schulz, Michael; Swingedouw, Didier; Szopa, Sophie; Viovy, Nicolas; Vuichard, Nicolas https://doi.org/10.1594/WDCC/CMIP5.IPIMr8

MIROC-ESM-CHEM historical JAMSTEC; AORI; NIES https://doi.org/10.1594/WDCC/CMIP5.MIM7hi

MIROC-ESM-CHEM piControl JAMSTEC; AORI; NIES https://doi.org/10.1594/WDCC/CMIP5.MIM7pc

MIROC-ESM-CHEM RCP8.5 JAMSTEC; AORI; NIES https://doi.org/10.1594/WDCC/CMIP5.MIM7r8

MIROC5 historical JAMSTEC; AORI; NIES https://doi.org/10.1594/WDCC/CMIP5.MIM5hi

MIROC5 piControl JAMSTEC; AORI; NIES https://doi.org/10.1594/WDCC/CMIP5.MIM5pc

MIROC5 RCP8.5 JAMSTEC; AORI; NIES https://doi.org/10.1594/WDCC/CMIP5.MIM5hi

MPI-ESM-LR historical Giorgetta, Marco; Jungclaus, Johann; Reick, Christian; Legutke, Stephanie; Brovkin, Victor; Crueger, Traute; Esch, Monika; Fieg, Kerstin; Glushak, Ksenia; Gayler, Veronika; Haak, Helmuth; Hollweg, Heinz-Dieter; Kinne, Stefan; Kornblueh, Luis; Matei, Daniela; Mauritsen, Thorsten; Mikolajewicz, Uwe; Müller, Wolfgang; Notz, Dirk; Raddatz, Thomas; Rast, Sebastian; Roeckner, Erich; Salzmann, Marc; Schmidt, Hauke; Schnur, Reiner; Segschneider, Joachim; Six, Katharina; Stockhause, Martina; Wegner, Joerg; Widmann, Heinrich; Wieners, Karl-Hermann; Claussen, Martin; Marotzke, Jochem; Stevens, Bjorn https://doi.org/10.1594/WDCC/CMIP5.MXELhi

MPI-ESM-LR piControl Giorgetta, Marco; Jungclaus, Johann; Reick, Christian; Legutke, Stephanie; Brovkin, Victor; Crueger, Traute; Esch, Monika; Fieg, Kerstin; Glushak, Ksenia; Gayler, Veronika; Haak, Helmuth; Hollweg, Heinz-Dieter; Kinne, Stefan; Kornblueh, Luis; Matei, Daniela; Mauritsen, Thorsten; Mikolajewicz, Uwe; Müller, Wolfgang; Notz, Dirk; Raddatz, Thomas; Rast, Sebastian; Roeckner, Erich; Salzmann, Marc; Schmidt, Hauke; Schnur, Reiner; Segschneider, Joachim; Six, Katharina; Stockhause, Martina; Wegner, Joerg; Widmann, Heinrich; Wieners, Karl-Hermann; Claussen, Martin; Marotzke, Jochem; Stevens, Bjorn https://doi.org/10.1594/WDCC/CMIP5.MXELpc

MPI-ESM-LR RCP8.5 Giorgetta, Marco; Jungclaus, Johann; Reick, Christian; Legutke, Stephanie; Brovkin, Victor; Crueger, Traute; Esch, Monika; Fieg, Kerstin; Glushak, Ksenia; Gayler, Veronika; Haak, Helmuth; Hollweg, Heinz-Dieter; Kinne, Stefan; Kornblueh, Luis; Matei, Daniela; Mauritsen, Thorsten; Mikolajewicz, Uwe; Müller, Wolfgang; Notz, Dirk; Raddatz, Thomas; Rast, Sebastian; Roeckner, Erich; Salzmann, Marc; Schmidt, Hauke; Schnur, Reiner; Segschneider, Joachim; Six, Katharina; Stockhause, Martina; Wegner, Joerg; Widmann, Heinrich; Wieners, Karl-Hermann; Claussen, Martin; Marotzke, Jochem; Stevens, Bjorn https://doi.org/10.1594/WDCC/CMIP5.MXELr8

MPI-ESM-MR historical Giorgetta, Marco; Jungclaus, Johann; Reick, Christian; Legutke, Stephanie; Brovkin, Victor; Crueger, Traute; Esch, Monika; Fieg, Kerstin; Glushak, Ksenia; Gayler, Veronika; Haak, Helmuth; Hollweg, Heinz-Dieter; Kinne, Stefan; Kornblueh, Luis; Matei, Daniela; Mauritsen, Thorsten; Mikolajewicz, Uwe; Müller, Wolfgang; Notz, Dirk; Raddatz, Thomas; Rast, Sebastian; Roeckner, Erich; Salzmann, Marc; Schmidt, Hauke; Schnur, Reiner; Segschneider, Joachim; Six, Katharina; Stockhause, Martina; Wegner, Joerg; Widmann, Heinrich; Wieners, Karl-Hermann; Claussen, Martin; Marotzke, Jochem; Stevens, Bjorn https://doi.org/10.1594/WDCC/CMIP5.MXMRhi

MPI-ESM-MR piControl Giorgetta, Marco; Jungclaus, Johann; Reick, Christian; Legutke, Stephanie; Brovkin, Victor; Crueger, Traute; Esch, Monika; Fieg, Kerstin; Glushak, Ksenia; Gayler, Veronika; Haak, Helmuth; Hollweg, Heinz-Dieter; Kinne, Stefan; Kornblueh, Luis; Matei, Daniela; Mauritsen, Thorsten; Mikolajewicz, Uwe; Müller, Wolfgang; Notz, Dirk; Raddatz, Thomas; Rast, Sebastian; Roeckner, Erich; Salzmann, Marc; Schmidt, Hauke; Schnur, Reiner; Segschneider, Joachim; Six, Katharina; Stockhause, Martina; Wegner, Joerg; Widmann, Heinrich; Wieners, Karl-Hermann; Claussen, Martin; Marotzke, Jochem; Stevens, Bjorn https://doi.org/10.1594/WDCC/CMIP5.MXMRpc

MPI-ESM-MR RCP8.5 Giorgetta, Marco; Jungclaus, Johann; Reick, Christian; Legutke, Stephanie; Brovkin, Victor; Crueger, Traute; Esch, Monika; Fieg, Kerstin; Glushak, Ksenia; Gayler, Veronika; Haak, Helmuth; Hollweg, Heinz-Dieter; Kinne, Stefan; Kornblueh, Luis; Matei, Daniela; Mauritsen, Thorsten; Mikolajewicz, Uwe; Müller, Wolfgang; Notz, Dirk; Raddatz, Thomas; Rast, Sebastian; Roeckner, Erich; Salzmann, Marc; Schmidt, Hauke; Schnur, Reiner; Segschneider, Joachim; Six, Katharina; Stockhause, Martina; Wegner, Joerg; Widmann, Heinrich; Wieners, Karl-Hermann; Claussen, Martin; Marotzke, Jochem; Stevens, Bjorn https://doi.org/10.1594/WDCC/CMIP5.MXMRr8

Model code and software

Latest stable release of ESMValTool ESMValTool Development Team https://doi.org/10.17874/ac8548f0315

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Short summary
The Thermodynamic Diagnostic Tool (TheDiaTo v1.0) is a collection of diagnostics for the study of thermodynamics of the climate system in climate models. This is fundamental, in order to understand where the imbalances affecting climate projections come from, and also allow for easy comparison of different scenarios and atmospheric regimes. The tool is currently being developed for the assessment of models that are part of the next phase of the Coupled Model Intercomparison Project (CMIP).
The Thermodynamic Diagnostic Tool (TheDiaTo v1.0) is a collection of diagnostics for the study...
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