Developments in the MPI-M Earth System Model version 1.2 (MPI-ESM1.2) and Its Response to Increasing CO2

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Mauritsen, ThorstenStockholms universitet,Meteorologiska institutionen (MISU),Max Planck Institute for Meteorology, Germany (author)

Developments in the MPI-M Earth System Model version 1.2 (MPI-ESM1.2) and Its Response to Increasing CO2

Article/chapterEnglish2019

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2019
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LIBRIS-ID:oai:DiVA.org:su-169055
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-169055URI
https://doi.org/10.1029/2018MS001400DOI

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Language:English
Summary in:English

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SwePubSwePub

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

Notes

A new release of the Max Planck Institute for Meteorology Earth System Model version 1.2 (MPI-ESM1.2) is presented. The development focused on correcting errors in and improving the physical processes representation, as well as improving the computational performance, versatility, and overall user friendliness. In addition to new radiation and aerosol parameterizations of the atmosphere, several relatively large, but partly compensating, coding errors in the model's cloud, convection, and turbulence parameterizations were corrected. The representation of land processes was refined by introducing a multilayer soil hydrology scheme, extending the land biogeochemistry to include the nitrogen cycle, replacing the soil and litter decomposition model and improving the representation of wildfires. The ocean biogeochemistry now represents cyanobacteria prognostically in order to capture the response of nitrogen fixation to changing climate conditions and further includes improved detritus settling and numerous other refinements. As something new, in addition to limiting drift and minimizing certain biases, the instrumental record warming was explicitly taken into account during the tuning process. To this end, a very high climate sensitivity of around 7 K caused by low-level clouds in the tropics as found in an intermediate model version was addressed, as it was not deemed possible to match observed warming otherwise. As a result, the model has a climate sensitivity to a doubling of CO2 over preindustrial conditions of 2.77 K, maintaining the previously identified highly nonlinear global mean response to increasing CO2 forcing, which nonetheless can be represented by a simple two-layer model.

Subject headings and genre

NATURVETENSKAP Geovetenskap och miljövetenskap Meteorologi och atmosfärforskning hsv//swe
NATURAL SCIENCES Earth and Related Environmental Sciences Meteorology and Atmospheric Sciences hsv//eng
coupled climate model
model development
climate sensitivity

Added entries (persons, corporate bodies, meetings, titles ...)

Bader, Jürgen (author)
Becker, Tobias (author)
Behrens, Jörg (author)
Bittner, Matthias (author)
Brokopf, Renate (author)
Brovkin, Victor (author)
Claussen, Martin (author)
Crueger, Traute (author)
Esch, Monika (author)
Fast, Irina (author)
Fiedler, StephanieStockholms universitet,Meteorologiska institutionen (MISU) (author)
Fläschner, Dagmar (author)
Gayler, Veronika (author)
Giorgetta, Marco (author)
Goll, Daniel S. (author)
Haak, Helmuth (author)
Hagemann, Stefan (author)
Hedemann, Christopher (author)
Hohenegger, Cathy (author)
Ilyina, Tatiana (author)
Jahns, Thomas (author)
Jimenéz-de-la-Cuesta, Diego (author)
Jungclaus, Johann (author)
Kleinen, Thomas (author)
Kloster, Silvia (author)
Kracher, Daniela (author)
Kinne, Stefan (author)
Kleberg, Deike (author)
Lasslop, Gitta (author)
Kornblueh, Luis (author)
Marotzke, Jochem (author)
Matei, Daniela (author)
Meraner, Katharina (author)
Mikolajewicz, Uwe (author)
Modali, Kameswarrao (author)
Möbis, Benjamin (author)
Müller, Wolfgang A. (author)
Nabel, Julia E. M. S. (author)
Nam, Christine C. W. (author)
Notz, Dirk (author)
Nyawira, Sarah-Sylvia (author)
Paulsen, Hanna (author)
Peters, Karsten (author)
Pincus, RobertStockholms universitet,Meteorologiska institutionen (MISU),Max Planck Institute for Meteorology, Germany; University of Colorado Boulder, USA; NOAA Earth System Research Lab, USA (author)
Pohlmann, Holger (author)
Pongratz, Julia (author)
Popp, Max (author)
Raddatz, Thomas Jürgen (author)
Rast, Sebastian (author)
Redler, Rene (author)
Reick, Christian H. (author)
Rohrschneider, Tim (author)
Schemann, Vera (author)
Schmidt, Hauke (author)
Schnur, Reiner (author)
Schulzweida, Uwe (author)
Six, Katharina D. (author)
Stein, Lukas (author)
Stemmler, Irene (author)
Stevens, Bjorn (author)
von Storch, Jin-Song (author)
Tian, Fangxing (author)
Voigt, Aiko (author)
Vrese, Philipp (author)
Wieners, Karl-Hermann (author)
Wilkenskjeld, Stiig (author)
Winkler, Alexander (author)
Roeckner, Erich (author)
Stockholms universitetMeteorologiska institutionen (MISU) (creator_code:org_t)

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In:Journal of Advances in Modeling Earth Systems11:4, s. 998-10381942-2466

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By the author/editor: Mauritsen, Thors ...; Bader, Jürgen; Becker, Tobias; Behrens, Jörg; Bittner, Matthia ...; Brokopf, Renate; show more...; Brovkin, Victor; Claussen, Martin; Crueger, Traute; Esch, Monika; Fast, Irina; Fiedler, Stephan ...; Fläschner, Dagma ...; Gayler, Veronika; Giorgetta, Marco; Goll, Daniel S.; Haak, Helmuth; Hagemann, Stefan; Hedemann, Christ ...; Hohenegger, Cath ...; Ilyina, Tatiana; Jahns, Thomas; Jimenéz-de-la-Cu ...; Jungclaus, Johan ...; Kleinen, Thomas; Kloster, Silvia; Kracher, Daniela; Kinne, Stefan; Kleberg, Deike; Lasslop, Gitta; Kornblueh, Luis; Marotzke, Jochem; Matei, Daniela; Meraner, Kathari ...; Mikolajewicz, Uw ...; Modali, Kameswar ...; Möbis, Benjamin; Müller, Wolfgang ...; Nabel, Julia E. ...; Nam, Christine C ...; Notz, Dirk; Nyawira, Sarah-S ...; Paulsen, Hanna; Peters, Karsten; Pincus, Robert; Pohlmann, Holger; Pongratz, Julia; Popp, Max; Raddatz, Thomas ...; Rast, Sebastian; Redler, Rene; Reick, Christian ...; Rohrschneider, T ...; Schemann, Vera; Schmidt, Hauke; Schnur, Reiner; Schulzweida, Uwe; Six, Katharina D ...; Stein, Lukas; Stemmler, Irene; Stevens, Bjorn; von Storch, Jin- ...; Tian, Fangxing; Voigt, Aiko; Vrese, Philipp; Wieners, Karl-He ...; Wilkenskjeld, St ...; Winkler, Alexand ...; Roeckner, Erich; show less...

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