Niall Gandy
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View article: Exploring the sensitivity of the Northern Hemisphere ice sheets at the last two glacial maxima to coupled climate-ice sheet model parameters
Exploring the sensitivity of the Northern Hemisphere ice sheets at the last two glacial maxima to coupled climate-ice sheet model parameters Open
Simulations of past periods are useful for testing the ability of numerical models to simulate ice sheet changes under significantly different climate conditions to present day. This can help improve projections of future sea level rise ma…
View article: Contrasting the Penultimate Glacial Maximum and the Last Glacial Maximum (140 and 21 ka) using coupled climate–ice sheet modelling
Contrasting the Penultimate Glacial Maximum and the Last Glacial Maximum (140 and 21 ka) using coupled climate–ice sheet modelling Open
The configuration of the Northern Hemisphere ice sheets during the Penultimate Glacial Maximum differed to the Last Glacial Maximum. However, the reasons for this are not yet fully understood. These differences likely contributed to the va…
View article: Large-ensemble simulations of the North American and Greenland ice sheets at the Last Glacial Maximum with a coupled atmospheric general circulation–ice sheet model
Large-ensemble simulations of the North American and Greenland ice sheets at the Last Glacial Maximum with a coupled atmospheric general circulation–ice sheet model Open
The Last Glacial Maximum (LGM) was characterised by huge ice sheets covering the Northern Hemisphere, especially over North America, and by its cold climate. Previous authors have performed numerical simulations of the LGM to better unders…
View article: Behavioural tendencies of the last British–Irish Ice Sheet revealed by data–model comparison
Behavioural tendencies of the last British–Irish Ice Sheet revealed by data–model comparison Open
Integrating ice‐sheet models with empirical data pertaining to palaeo‐ice sheets promotes advances in the models used in sea‐level predictions and can improve our understanding of past ice‐sheet behaviour. The large number of empirical con…
View article: Ice sheet speed-dating: Using expert judgement to identify “good” simulations of the last glacial maximum North American ice sheets
Ice sheet speed-dating: Using expert judgement to identify “good” simulations of the last glacial maximum North American ice sheets Open
After generating a large ensemble of palaeo ice sheet model runs, it is common to either rank the simulations, or classify each simulation as an acceptable match to observations or not. Both tasks require implicit human judgement, usually …
View article: Coexchangeable Process Modeling for Uncertainty Quantification in Joint Climate Reconstruction
Coexchangeable Process Modeling for Uncertainty Quantification in Joint Climate Reconstruction Open
This is the final version. Available on open access from Taylor & Francis via the DOI in this record
View article: Coupled ensemble simulations of the Northern Hemisphere ice sheets at last two glacial maxima 
Coupled ensemble simulations of the Northern Hemisphere ice sheets at last two glacial maxima  Open
Coupled climate-ice sheet models can capture important interactions between the ice sheets and the climate that can help us better understand an ice sheet's response to changes in forcings. In this respect, they are a useful tool for simul…
View article: Contrasting the Penultimate and Last Glacial Maxima (140 and 21 ka BP) using coupled climate-ice sheet modelling
Contrasting the Penultimate and Last Glacial Maxima (140 and 21 ka BP) using coupled climate-ice sheet modelling Open
The configuration of the Northern Hemisphere ice sheets during the Penultimate Glacial Maximum differed to the Last Glacial Maximum. However, the reasons for this are not yet fully understood. These differences likely contributed to the va…
View article: Large ensemble simulations of the North American and Greenland ice sheets at the Last Glacial Maximum with a coupled atmospheric general circulation-ice sheet model
Large ensemble simulations of the North American and Greenland ice sheets at the Last Glacial Maximum with a coupled atmospheric general circulation-ice sheet model Open
The Last Glacial Maximum (LGM) is characterised by huge ice sheets covering the Northern Hemisphere, especially over North America, and by its cold climate. Numerical simulations of the climate and ice sheets of the LGM have been performed…
View article: Supplementary material to "Large ensemble simulations of the North American and Greenland ice sheets at the Last Glacial Maximum with a coupled atmospheric general circulation-ice sheet model"
Supplementary material to "Large ensemble simulations of the North American and Greenland ice sheets at the Last Glacial Maximum with a coupled atmospheric general circulation-ice sheet model" Open
Fig. S1 Initial conditions and spin-up in stand-alone ice sheet model simulations.(a) ice topography from Tarasov et al. (2012, m) and (b) bedrock topography [m].Differences of bedrock between 21ka and 0ka in Tarasov et al. (2012) are adde…
View article: Comment on cp-2023-42
Comment on cp-2023-42 Open
Abstract. During the glacial cycles of the past 800 thousand years, Eurasia and North America were periodically covered by large ice sheets. While the Late Pleistocene glacial cycles typically lasted 80 – 120 thousand year…
View article: De‐Tuning Albedo Parameters in a Coupled Climate Ice Sheet Model to Simulate the North American Ice Sheet at the Last Glacial Maximum
De‐Tuning Albedo Parameters in a Coupled Climate Ice Sheet Model to Simulate the North American Ice Sheet at the Last Glacial Maximum Open
The Last Glacial Maximum extent of the North American Ice Sheets is well constrained empirically but has proven to be challenging to simulate with coupled Climate‐Ice Sheet models. Coupled Climate‐Ice Sheet models are often too computation…
View article: Parameter ensemble simulations of the North American and Greenland ice sheets and climate of the Last Glacial Maximum with Famous-BISICLES
Parameter ensemble simulations of the North American and Greenland ice sheets and climate of the Last Glacial Maximum with Famous-BISICLES Open
Testing the ability of climate-ice sheet coupled models to simulate past ice sheets and climates can provide a way to evaluate the models. One example is the Last Glacial Maximum (LGM), when huge ice sheets covered the Northern Hemisphere,…
View article: Ice Sheet Speed-dating: Using Expert Elicitation to identify “good” simulations of the LGM North American Ice Sheets
Ice Sheet Speed-dating: Using Expert Elicitation to identify “good” simulations of the LGM North American Ice Sheets Open
After running a large ensemble of palaeo ice sheet model runs, it is common to either rank the simulations or determine which simulations are an acceptable match to observations and which are ruled out. This task requires human judgement, …
View article: Comment on tc-2022-215
Comment on tc-2022-215 Open
Abstract. In the last decades, great effort has been made to reconstruct the Laurentide Ice Sheet (LIS) during the Last Glacial Maximum (LGM, ca. 21,000 years before present, 21 kyr ago). Uncertainties underlying its model…
View article: The collapse of the Cordilleran–Laurentide ice saddle and early opening of the Mackenzie Valley, Northwest Territories, Canada, constrained by <sup>10</sup> Be exposure dating
The collapse of the Cordilleran–Laurentide ice saddle and early opening of the Mackenzie Valley, Northwest Territories, Canada, constrained by <sup>10</sup> Be exposure dating Open
Deglaciation of the northwestern Laurentide Ice Sheet in the central Mackenzie Valley opened the northern portion of the deglacial Ice-Free Corridor between the Laurentide and Cordilleran ice sheets and a drainage route to the Arctic Ocean…
View article: Growth and retreat of the last British–Irish Ice Sheet, 31 000 to 15 000 years ago: the BRITICE‐CHRONO reconstruction
Growth and retreat of the last British–Irish Ice Sheet, 31 000 to 15 000 years ago: the BRITICE‐CHRONO reconstruction Open
The BRITICE‐CHRONO consortium of researchers undertook a dating programme to constrain the timing of advance, maximum extent and retreat of the British–Irish Ice Sheet between 31 000 and 15 000 years before present. The dating campaign acr…
View article: Comment on tc-2022-120
Comment on tc-2022-120 Open
Abstract. Deglaciation of the northwestern Laurentide Ice Sheet in the central Mackenzie Valley opened the northern portion of the deglacial Ice-Free Corridor between the Laurentide and Cordilleran ice sheets and a drainag…
View article: De-tuning a coupled Climate Ice Sheet Model to simulate the North American Ice Sheet at the Last Glacial Maximum
De-tuning a coupled Climate Ice Sheet Model to simulate the North American Ice Sheet at the Last Glacial Maximum Open
The maximum extent of the last North American ice sheet is well constrained empirically, but it has proven to be challenging to simulate with coupled Climate-Ice Sheet models. Coupled Climate-Ice Sheet models are often too computationally …
View article: Comment on tc-2022-120
Comment on tc-2022-120 Open
Deglaciation of the northwestern Laurentide Ice Sheet in the central Mackenzie Valley opened the northern portion of the deglacial Ice-Free Corridor between the Laurentide and Cordilleran ice sheets and a drainage route to the Arctic Ocean…
View article: The collapse of the Laurentide-Cordilleran ice saddle and early opening of the Mackenzie Valley, Northwest Territories, constrained by <sup>10</sup> Be exposure dating
The collapse of the Laurentide-Cordilleran ice saddle and early opening of the Mackenzie Valley, Northwest Territories, constrained by <sup>10</sup> Be exposure dating Open
Deglaciation of the northwestern Laurentide Ice Sheet in the central Mackenzie Valley opened the northern portion of the deglacial Ice-Free Corridor between the Laurentide and Cordilleran ice sheets and a drainage route to the Arctic Ocean…
View article: De-tuning a coupled Climate Ice Sheet Model to simulate the North American Ice Sheet at the Last Glacial Maximum&#160;
De-tuning a coupled Climate Ice Sheet Model to simulate the North American Ice Sheet at the Last Glacial Maximum  Open
<p>Coupled climate-ice sheet models are crucial to evaluating climate-ice feedbacks' role in future ice sheet evolution. Such models are calibrated to reproduce modern-day ice sheets, but current observations alone are insufficient t…
View article: Simulations of North American ice sheet at the LGM with FAMOUS-BISICLES&#160;and its sensitivity to global temperatures
Simulations of North American ice sheet at the LGM with FAMOUS-BISICLES and its sensitivity to global temperatures Open
<p>Understanding the response of ice sheets to global temperature changes is a critical issue for the climate community. To accurately simulate future ice sheet evolution, we need to know the strength of feedbacks between the climate…
View article: Quantifying uncertainties in global monthly mean sea surface temperature and sea ice at the Last Glacial Maximum&#160;
Quantifying uncertainties in global monthly mean sea surface temperature and sea ice at the Last Glacial Maximum  Open
<div> <p><span>Studying the Last Glacial Maximum (LGM), 21000 years ago, provides insights into climate sensitivity to greenhouse gases and critical interactions within the earth system (e.g. atmosphere,…
View article: Coexchangeable process modelling for uncertainty quantification in joint climate reconstruction
Coexchangeable process modelling for uncertainty quantification in joint climate reconstruction Open
Any experiment with climate models relies on a potentially large set of spatio-temporal boundary conditions. These can represent both the initial state of the system and/or forcings driving the model output throughout the experiment. Whils…
View article: Exploring the complex uncertainties in coupled climate-ice simulations of the Last Glacial Maximum
Exploring the complex uncertainties in coupled climate-ice simulations of the Last Glacial Maximum Open
<p>Simulating the co-evolution of climate and ice-sheets during the Quaternary is key to understanding some of the major abrupt changes in climate, ice and sea level. Indeed, events such as the Meltwater pulse 1a rapid sea level rise…
View article: A Statistical Reconstruction of Sea-Surface Temperature and Sea-Ice Concentration for the Last Glacial Maximum
A Statistical Reconstruction of Sea-Surface Temperature and Sea-Ice Concentration for the Last Glacial Maximum Open
<p>Recent geoscience and palaeoclimatic modelling advances in have seen an increasing demand for spatio-temporal reconstructions of climatic variables. Satisfactory reconstructions should consider all sources of information: both num…
View article: Collapse of the Last Eurasian Ice Sheet in the North Sea Modulated by Combined Processes of Ice Flow, Surface Melt, and Marine Ice Sheet Instabilities
Collapse of the Last Eurasian Ice Sheet in the North Sea Modulated by Combined Processes of Ice Flow, Surface Melt, and Marine Ice Sheet Instabilities Open
The record of the confluence and collapse of the British‐Irish Ice Sheet and the Fennoscandian Ice Sheet is obscured by the North Sea, hindering reconstructions of the glacial dynamics of this sector of the Eurasian Ice Sheet complex durin…
View article: Proglacial Lakes Control Glacier Geometry and Behavior During Recession
Proglacial Lakes Control Glacier Geometry and Behavior During Recession Open
Ice‐contact proglacial lakes are generally absent from numerical model simulations of glacier evolution, and their effects on ice dynamics and on rates of deglaciation remain poorly quantified. Using the BISICLES ice flow model, we analyze…
View article: North Sea Deglaciation Simulation (Gandy et al., JGR)
North Sea Deglaciation Simulation (Gandy et al., JGR) Open
Archived files for manuscript "Collapse of the Eurasian Ice Sheet in the North Sea modulated by combined processes of ice flow, surface melt, and marine ice sheet instabilities" by Gandy et al., in prep. Contents; >Netcdf file for each NRO…