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Journal Articles Geoscientific Model Development Year : 2023

ICON-Sapphire: simulating the components of the Earth system and their interactions at kilometer and subkilometer scales

Cathy Hohenegger
  • Function : Author
Peter Korn
  • Function : Author
Leonidas Linardakis
  • Function : Author
René Redler
  • Function : Author
Reiner Schnur
  • Function : Author
Panagiotis Adamidis
  • Function : Author
Jiawei Bao
  • Function : Author
Swantje Bastin
  • Function : Author
Milad Behravesh
  • Function : Author
Martin Bergemann
  • Function : Author
Joachim Biercamp
  • Function : Author
Hendryk Bockelmann
  • Function : Author
Renate Brokopf
  • Function : Author
Nils Brüggemann
  • Function : Author
Lucas Casaroli
  • Function : Author
Fatemeh Chegini
  • Function : Author
George Datseris
  • Function : Author
Monika Esch
  • Function : Author
Geet George
  • Function : Author
Marco Giorgetta
  • Function : Author
Oliver Gutjahr
  • Function : Author
Helmuth Haak
  • Function : Author
Moritz Hanke
  • Function : Author
Tatiana Ilyina
  • Function : Author
Thomas Jahns
  • Function : Author
Johann Jungclaus
  • Function : Author
Marcel Kern
  • Function : Author
Daniel Klocke
  • Function : Author
Lukas Kluft
  • Function : Author
Tobias Kölling
  • Function : Author
Luis Kornblueh
  • Function : Author
Sergey Kosukhin
  • Function : Author
Clarissa Kroll
  • Function : Author
Junhong Lee
  • Function : Author
Thorsten Mauritsen
  • Function : Author
Carolin Mehlmann
  • Function : Author
Theresa Mieslinger
  • Function : Author
Ann Kristin Naumann
  • Function : Author
Laura Paccini
  • Function : Author
Angel Peinado
  • Function : Author
Divya Sri Praturi
  • Function : Author
Dian Putrasahan
  • Function : Author
Sebastian Rast
  • Function : Author
Thomas Riddick
  • Function : Author
Niklas Roeber
  • Function : Author
Hauke Schmidt
  • Function : Author
Uwe Schulzweida
  • Function : Author
Florian Schütte
  • Function : Author
Hans Segura
  • Function : Author
Radomyra Shevchenko
  • Function : Author
Vikram Singh
  • Function : Author
Mia Specht
  • Function : Author
Claudia Christine Stephan
  • Function : Author
Jin-Song von Storch
  • Function : Author
Christian Wengel
  • Function : Author
Marius Winkler
  • Function : Author
Florian Ziemen
  • Function : Author
Jochem Marotzke
  • Function : Author
Bjorn Stevens
  • Function : Author

Abstract

State-of-the-art Earth system models typically employ grid spacings of O(100 km), which is too coarse to explicitly resolve main drivers of the flow of energy and matter across the Earth system. In this paper, we present the new ICON-Sapphire model configuration, which targets a representation of the components of the Earth system and their interactions with a grid spacing of 10 km and finer. Through the use of selected simulation examples, we demonstrate that ICON-Sapphire can (i) be run coupled globally on seasonal timescales with a grid spacing of 5 km, on monthly timescales with a grid spacing of 2.5 km, and on daily timescales with a grid spacing of 1.25 km; (ii) resolve large eddies in the atmosphere using hectometer grid spacings on limited-area domains in atmosphere-only simulations; (iii) resolve submesoscale ocean eddies by using a global uniform grid of 1.25 km or a telescoping grid with the finest grid spacing at 530 m, the latter coupled to a uniform atmosphere; and (iv) simulate biogeochemistry in an ocean-only simulation integrated for 4 years at 10 km. Comparison of basic features of the climate system to observations reveals no obvious pitfalls, even though some observed aspects remain difficult to capture. The throughput of the coupled 5 km global simulation is 126 simulated days per day employing 21 % of the latest machine of the German Climate Computing Center. Extrapolating from these results, multi-decadal global simulations including interactive carbon are now possible, and short global simulations resolving large eddies in the atmosphere and submesoscale eddies in the ocean are within reach.
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insu-03993954 , version 1 (17-02-2023)

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Cathy Hohenegger, Peter Korn, Leonidas Linardakis, René Redler, Reiner Schnur, et al.. ICON-Sapphire: simulating the components of the Earth system and their interactions at kilometer and subkilometer scales. Geoscientific Model Development, 2023, 16, pp.779-811. ⟨10.5194/gmd-16-779-2023⟩. ⟨insu-03993954⟩
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