Peter Korn
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View article: The ICON-based Earth System Model for climate predictions and projections (ICON XPP v1.0)
The ICON-based Earth System Model for climate predictions and projections (ICON XPP v1.0) Open
We develop a new Earth System model configuration framed into the ICON architecture, which provides the baseline for the next generation of climate predictions and projections (hereafter ICON XPP – where XPP stands for eXtended Predictions…
View article: The ICON-based Earth System Model for Climate Predictions and Projections (ICON XPP v1.0)
The ICON-based Earth System Model for Climate Predictions and Projections (ICON XPP v1.0) Open
We develop a new Earth System model configuration framed into the ICON architecture, which provides the baseline for the next generation of climate predictions and projections (hereafter ICON XPP – where XPP stands for eXtended Predictions…
View article: ICON: Toward Vertically Integrated Model Configurations for Numerical Weather Prediction, Climate Predictions, and Projections
ICON: Toward Vertically Integrated Model Configurations for Numerical Weather Prediction, Climate Predictions, and Projections Open
A wide range of important societal and economic applications on national and international levels strive for an integrated understanding and forecasting of weather and climate, at high spatial resolution ranging from days to decades. The g…
View article: Sources and sinks of upper-ocean submesoscale turbulence
Sources and sinks of upper-ocean submesoscale turbulence Open
Submesoscale eddies play a pivotal role in upper-ocean dynamics by influencing turbulent mixing and the advection of heat, energy, and tracers. In this study, we examine critical aspects of the submesoscale energy cycle using a novel confi…
View article: Improving performance of ICON-O through parallel-in-time integration and dynamic super-resolution
Improving performance of ICON-O through parallel-in-time integration and dynamic super-resolution Open
Global ocean simulations at very high resolution are extremely time consuming. Representing sub-mesoscale eddies on a numerical grid requires local resolutions of around 600m and is currently only possible in simulations over a few weeks o…
View article: Dynamic deep learning based super-resolution for the shallow water equations
Dynamic deep learning based super-resolution for the shallow water equations Open
Correctly capturing the transition to turbulence in a barotropic instability requires fine spatial resolution. To reduce computational cost, we propose a dynamic super-resolution approach where a transient simulation on a coarse mesh is fr…
View article: Community-Supported Shared Infrastructure in Support of Speech Accessibility
Community-Supported Shared Infrastructure in Support of Speech Accessibility Open
Purpose: The Speech Accessibility Project (SAP) intends to facilitate research and development in automatic speech recognition (ASR) and other machine learning tasks for people with speech disabilities. The purpose of this article is to in…
View article: Parameterized Internal Wave Mixing in Three Ocean General Circulation Models
Parameterized Internal Wave Mixing in Three Ocean General Circulation Models Open
The non‐local model of mixing based on internal wave breaking, IDEMIX, is implemented as an enhancement of a turbulent kinetic energy closure model in three non‐eddy resolving general circulation ocean models that differ in the discretizat…
View article: Dynamic Deep Learning Based Super-Resolution For The Shallow Water Equations
Dynamic Deep Learning Based Super-Resolution For The Shallow Water Equations Open
Using the nonlinear shallow water equations as benchmark, we demonstrate that a simulation with the ICON-O ocean model with a 20km resolution that is frequently corrected by a U-net-type neural network can achieve discretization errors of …
View article: Parameterized internal wave mixing in three ocean general circulation models
Parameterized internal wave mixing in three ocean general circulation models Open
We evaluate the parameterization IDEMIX for vertical mixing by breaking internal gravity waves in three different non-eddy resolving ocean models, namely ICON-O, FESOM and MITgcm. To assess the impact of the new closure, we prescribe three…
View article: Accuracy and stability analysis of horizontal discretizations used in unstructured grid ocean models
Accuracy and stability analysis of horizontal discretizations used in unstructured grid ocean models Open
One important tool at our disposal to evaluate the robustness of Global Circulation Models (GCMs) is to understand the horizontal discretization of the dynamical core under a shallow water approximation. Here, we evaluate the accuracy and …
View article: Open-ocean tides simulated by ICON-O, version icon-2.6.6
Open-ocean tides simulated by ICON-O, version icon-2.6.6 Open
This paper evaluates barotropic tides simulated by a newly developed multi-layer ocean general circulation, ICON-O, and assesses processes and model configurations that can impact the quality of the simulated tides. Such an investigation i…
View article: An implementation of Hasselmann’s paradigm for stochastic climate modelling based on stochastic Lie transport <sup>*</sup>
An implementation of Hasselmann’s paradigm for stochastic climate modelling based on stochastic Lie transport <sup>*</sup> Open
A generic approach to stochastic climate modelling is developed for the example of an idealised Atmosphere-Ocean model that rests upon Hasselmann’s paradigm for stochastic climate models. Namely, stochasticity is incorporated into the fast…
View article: Open-Ocean Tides Simulated by ICON-O
Open-Ocean Tides Simulated by ICON-O Open
This paper evaluates barotropic tides simulated by a newly developed ocean general circulation – ICON-O and assesses processes and model configurations that can impact the quality of the simulated tides. Such an investigation is crucial fo…
View article: Parameterized internal wave mixing in three ocean general circulation models
Parameterized internal wave mixing in three ocean general circulation models Open
The parameterization IDEMIX for vertical mixing by breaking internal gravity waves is evaluated in three different non-eddy resolving ocean models. Three different products of wave forcing by tidal flow over topography, representing the cu…
View article: Global Well-Posedness of the Primitive Equations of Large-Scale Ocean Dynamics with the Gent-McWilliams-Redi Eddy Parametrization Model
Global Well-Posedness of the Primitive Equations of Large-Scale Ocean Dynamics with the Gent-McWilliams-Redi Eddy Parametrization Model Open
We prove global well-posedness of the ocean primitive equations coupled to advection-diffusion equations of the oceanic tracers temperature and salinity that are supplemented by the eddy parametrization model due to Gent-McWilliams and Red…
View article: Dissipation due to ageostrophic turbulence in the upper-ocean mixed layer
Dissipation due to ageostrophic turbulence in the upper-ocean mixed layer Open
In our study, we diagnose dissipation by ageostrophic turbulence in the upper ocean. To this end, we use the Max Planck Institute's ocean model ICON-O with a telescoping grid configuration, where the resolution is enhanced up to values sma…
View article: ICON-Sapphire: simulating the components of the Earth system and their interactions at kilometer and subkilometer scales
ICON-Sapphire: simulating the components of the Earth system and their interactions at kilometer and subkilometer scales Open
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-Sapph…
View article: Improving scalability of Earth system models through coarse-grained component concurrency – a case study with the ICON v2.6.5 modelling system
Improving scalability of Earth system models through coarse-grained component concurrency – a case study with the ICON v2.6.5 modelling system Open
In the era of exascale computing, machines with unprecedented computing power are available. Making efficient use of these massively parallel machines, with millions of cores, presents a new challenge. Multi-level and multi-dimensional par…
View article: Improving scalability of Earth System Models through coarse-grained component concurrency – a case study with the ICON v2.6.5 modeling system
Improving scalability of Earth System Models through coarse-grained component concurrency – a case study with the ICON v2.6.5 modeling system Open
In the era of exascale computing, machines with unprecedented computing power are available. Making efficient use of these massively parallel machines, with millions of cores, presents a new challenge. Multi-level and multi-dimensional par…
View article: ICON‐O: The Ocean Component of the ICON Earth System Model—Global Simulation Characteristics and Local Telescoping Capability
ICON‐O: The Ocean Component of the ICON Earth System Model—Global Simulation Characteristics and Local Telescoping Capability Open
We describe the ocean general circulation model Ico sahedral N onhydrostatic Weather and Climate Model (ICON‐O) of the Max Planck Institute for Meteorology, which forms the ocean‐sea ice component of the Earth system model ICON‐ESM. ICON‐O…
View article: Seamless Integration of the Coastal Ocean in Global Marine Carbon Cycle Modeling
Seamless Integration of the Coastal Ocean in Global Marine Carbon Cycle Modeling Open
We present the first global ocean‐biogeochemistry model that uses a telescoping high resolution for an improved representation of coastal carbon dynamics: ICON‐Coast. Based on the unstructured triangular grid topology of the model, we glob…
View article: ICON-Sapphire: simulating the components of the Earth System and their interactions at kilometer and subkilometer scales
ICON-Sapphire: simulating the components of the Earth System and their interactions at kilometer and subkilometer scales Open
State-of-the-art Earth System models typically employ grid spacings of O(100 km), 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…
View article: Seamless integration of the coastal ocean in global marine carbon cycle modeling
Seamless integration of the coastal ocean in global marine carbon cycle modeling Open
Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Advances in Modeling Earth Systems (JAMES). ESSOAr is a venue for early communication or feedback before peer review. Data ma…
View article: ICON-Seamless, the development of a novel Earth System Model based on ICON for time scales from weather to climate
ICON-Seamless, the development of a novel Earth System Model based on ICON for time scales from weather to climate Open
Within the project ICON-Seamless a new Earth System Model is developed for weather forecasts, seasonal and decadal climate predictions, as well as climate projections. In doing so, we use the expertise from the numerical weather prediction…
View article: The ICON Earth System Model Version 1.0
The ICON Earth System Model Version 1.0 Open
This work documents the ICON‐Earth System Model (ICON‐ESM V1.0), the first coupled model based on the ICON (ICOsahedral Non‐hydrostatic) framework with its unstructured, icosahedral grid concept. The ICON‐A atmosphere uses a nonhydrostatic…
View article: Seamless integration of the coastal ocean in global marine carbon cycle modeling
Seamless integration of the coastal ocean in global marine carbon cycle modeling Open
Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Advances in Modeling Earth Systems (JAMES). ESSOAr is a venue for early communication or feedback before peer review. Data ma…
View article: The ICON Earth System Model Version 1.0 1
The ICON Earth System Model Version 1.0 1 Open
• This work documents ICON-ESM 1.0, the first version of a coupled model based 19 on the ICON framework 20 • Performance of ICON-ESM is assessed by means of CMIP6 DECK experiments 21 at standard CMIP-type resolution 22 • ICON-ESM reproduce…