Pierre Mathiot
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View article: Why Icebergs and their Interactions with Sea Ice Should Be Included in Earth System Models?
Why Icebergs and their Interactions with Sea Ice Should Be Included in Earth System Models? Open
Thirty-three researchers from France, Australia, Belgium, Canada, the UK, and Germany gathered in Paris for a two-day hybrid workshop (3–4 June 2025) to discuss iceberg–sea ice interactions and their representation in Earth system models. …
View article: Datasets and protocols for including anomalous freshwater from melting ice sheets in climate simulations
Datasets and protocols for including anomalous freshwater from melting ice sheets in climate simulations Open
Anomalous freshwater fluxes from the Greenland and Antarctic ice sheets and ice shelves are impacting the surrounding oceans, and we need to be able to account for these effects in climate model simulations over the historical period and i…
View article: Disentangling uncertainty in ISMIP6 Antarctic sub-shelf melting and 2300 sea level rise projections
Disentangling uncertainty in ISMIP6 Antarctic sub-shelf melting and 2300 sea level rise projections Open
Ocean-driven ice shelf melting is a major contributor of present and future ice loss from the Antarctic Ice Sheet. In the Ice Sheet Model Intercomparison Project (ISMIP6) Antarctic 2300 projections, sea level rise varies widely, from -0.6 …
View article: Iceberg Grounding Enhances the Release of Freshwater on the Antarctic Continental Shelf
Iceberg Grounding Enhances the Release of Freshwater on the Antarctic Continental Shelf Open
The importance of Antarctic iceberg meltwater for the Southern Ocean has been a strong incentive to include Lagrangian icebergs in ocean and climate models. However, the modeled iceberg thickness has previously been constrained to 250 m, w…
View article: Benefits of a Landfast Ice Representation on Simulated Antarctic Sea Ice and Coastal Polynya Dynamics
Benefits of a Landfast Ice Representation on Simulated Antarctic Sea Ice and Coastal Polynya Dynamics Open
The Antarctic coastal marine region is a unique and highly complex environment, of which landfast ice and polynyas are key features, especially in the context of dense water formation. Current large‐scale ocean‐sea ice models used in clima…
View article: Effects of subgrid-scale ice topography on the ice shelf basal melting simulated in NEMO-4.2.0
Effects of subgrid-scale ice topography on the ice shelf basal melting simulated in NEMO-4.2.0 Open
At the interface between the ocean and the ice shelf base, in the framework of the shear-controlled melt parameterisation, the ice melts due to combined actions of temperature, salinity and friction velocity. In the NEMO ocean model, the f…
View article: Modelled dynamics of floating and grounded icebergs, with application to the Amundsen Sea
Modelled dynamics of floating and grounded icebergs, with application to the Amundsen Sea Open
Icebergs that ground on the submarine Bear Ridge in the Amundsen Sea are known to block the drift of sea ice, playing a crucial role in maintaining shelf sea ocean conditions. This important iceberg—sea ice—ocean interaction is ubiquitous …
View article: Results of the second Ice Shelf – Ocean Model Intercomparison Project (ISOMIP+)
Results of the second Ice Shelf – Ocean Model Intercomparison Project (ISOMIP+) Open
Ocean-driven basal melting of Antarctic ice shelves plays an important role in the mass loss of the Antarctic Ice Sheet. Ice shelf cavity-resolving ocean models are a valuable tool for understanding ice shelf-ocean interactions and for sim…
View article: Resolution dependence of interlinked Southern Ocean biases in global coupled HadGEM3 models
Resolution dependence of interlinked Southern Ocean biases in global coupled HadGEM3 models Open
The early spinup of the HadGEM3 coupled model displays large-scale biases in the Southern Ocean at an eddy-permitting ocean resolution: the subpolar gyres and Antarctic Slope Current (ASC) are too active, the Antarctic Circumpolar Current …
View article: Datasets and protocols for including anomalous freshwater from melting ice sheets in climate simulations
Datasets and protocols for including anomalous freshwater from melting ice sheets in climate simulations Open
Anomalous freshwater fluxes from the Greenland and Antarctic ice sheets and ice shelves are impacting the surrounding oceans and we need to be able to account for these effects in climate model simulations over the historical period and be…
View article: The role of tidal modulation on potential future warming behaviour in the Ross Sea
The role of tidal modulation on potential future warming behaviour in the Ross Sea Open
Ocean temperatures on the continental shelf in the Ross Sea and beneath the Ross Ice Shelf have remained cold in recent decades, despite climate-related warming trends in nearby regions, such as the Amundsen Sea. The Ross Sea is an importa…
View article: Developments within an Antarctic ocean model configuration: balancing regional characteristics with circumpolar modelling challenges
Developments within an Antarctic ocean model configuration: balancing regional characteristics with circumpolar modelling challenges Open
The West Antarctic Ice Sheet is rapidly losing mass due to ocean-driven ice shelf melt, contributing to sea level rise. This ice shelf melt is typically studied using either global climate models without open ice shelf cavities or regional…
View article: Investigating Iceberg–Sea Ice Interactions in the Southern Ocean Using NEMO-ICB
Investigating Iceberg–Sea Ice Interactions in the Southern Ocean Using NEMO-ICB Open
Icebergs, formed by the calving of the Antarctic ice sheet, are among the most emblematic natural features of the polar regions. Their presence in the Southern Ocean, an essential carbon and heat sink, raises important questions about thei…
View article: Neural network emulators of high resolution melt processes under Antarctic ice shelves
Neural network emulators of high resolution melt processes under Antarctic ice shelves Open
To make accurate projections of future sea level rise, small-scale ice-sheet and ice-shelf processes must be included in global climate models. Since high-resolution fully-coupled ice-sheet--ocean models are computationally expensive, mult…
View article: Uncertainty in the projected Antarctic contribution to sea level due to internal climate variability
Uncertainty in the projected Antarctic contribution to sea level due to internal climate variability Open
Identifying and quantifying irreducible and reducible uncertainties in the Antarctic Ice Sheet (AIS) response to future climate change is essential for guiding mitigation and adaptation policy decision. However, the impact of the irreducib…
View article: GOSI9: UK Global Ocean and Sea Ice configurations
GOSI9: UK Global Ocean and Sea Ice configurations Open
The UK Global Ocean and Sea Ice configuration version 9 (GOSI9) is a new traceable hierarchy of three model configurations at 1, 1/4 and 1/12° based on version 4.0.4 of the NEMO code. GOSI9 has been developed as part of the UK's Joint Mari…
View article: Subglacial Water Amplifies Antarctic Contributions to Sea-Level Rise
Subglacial Water Amplifies Antarctic Contributions to Sea-Level Rise Open
Antarctica's contribution to global sea-level rise (SLR) is deeply uncertain, with subglacial water suspected to play a critical role, yet its impact remains unclear. We demonstrate that water at the base of ice sheets influences sliding b…
View article: Evolution of the Antarctic Ice Sheet Over the Next Three Centuries From an ISMIP6 Model Ensemble
Evolution of the Antarctic Ice Sheet Over the Next Three Centuries From an ISMIP6 Model Ensemble Open
The Ice Sheet Model Intercomparison Project for CMIP6 (ISMIP6) is the primary effort of CMIP6 (Coupled Model Intercomparison Project–Phase 6) focusing on ice sheets, designed to provide an ensemble of process‐based projections of the ice‐s…
View article: Resolution dependence of interlinked Southern Ocean biases in global coupled HadGEM3 models
Resolution dependence of interlinked Southern Ocean biases in global coupled HadGEM3 models Open
The early spin up of the HadGEM3 coupled model displays large-scale biases in the Southern Ocean at eddy- permitting ocean resolution: The subpolar gyres and Antarctic Slope Current (ASC) are too active; the Antarctic Circumpolar Current (…
View article: High-end projections of Southern Ocean warming and Antarctic ice shelf melting in conditions typical of the end of the 23rd century
High-end projections of Southern Ocean warming and Antarctic ice shelf melting in conditions typical of the end of the 23rd century Open
High-end projections of Southern Ocean warming and Antarctic ice shelf melting in conditions typical of the end of the 23rd century To evaluate the response of the Southern Ocean and Antarctic ice shelf cavities to an abrupt change to high…
View article: GOSI9: UK Global Ocean and Sea Ice configurations
GOSI9: UK Global Ocean and Sea Ice configurations Open
The UK Global Ocean and Sea Ice configuration version 9 (GOSI9) is a new traceable hierarchy of three model configurations at 1°, 1/4° and 1/12° based on the version 4.0.4 of the NEMO code. GOSI9 has been developed as part of the UK's Join…
View article: Supplementary material to "GOSI9: UK Global Ocean and Sea Ice configurations"
Supplementary material to "GOSI9: UK Global Ocean and Sea Ice configurations" Open
Figure S1.Annual mean of fresh water flux (kg.m-2.s-1)from iceberg melt calculated from GO6 integrations.1
View article: Comment on egusphere-2024-128
Comment on egusphere-2024-128 Open
Abstract. Identifying and quantifying irreducible and reducible uncertainties in the Antarctic Ice Sheet response to future climate change is essential for guiding mitigation and adaptation policy decision. However, the impact of the irred…
View article: Comment on egusphere-2024-128
Comment on egusphere-2024-128 Open
Abstract. Identifying and quantifying irreducible and reducible uncertainties in the Antarctic Ice Sheet response to future climate change is essential for guiding mitigation and adaptation policy decision. However, the impact of the irred…
View article: Comment on egusphere-2024-128
Comment on egusphere-2024-128 Open
Abstract. Identifying and quantifying irreducible and reducible uncertainties in the Antarctic Ice Sheet response to future climate change is essential for guiding mitigation and adaptation policy decision. However, the impact of the irred…