David Pollard
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View article: Antarctic meltwater alters future projections of climate and sea level
Antarctic meltwater alters future projections of climate and sea level Open
Imperfect understanding of ice sheet-climate interactions poses challenges for projecting the impacts of ice sheet mass loss on future climate and sea level. Here we couple a dynamic Antarctic ice sheet model and global climate model to si…
View article: An ex vivo porcine urethral model for investigating intermittent catheter-associated urethral microtrauma
An ex vivo porcine urethral model for investigating intermittent catheter-associated urethral microtrauma Open
Catheter-associated urethral microtrauma is a significant complication of intermittent catheterisation, compromising patient quality of life (QOL) and increasing urinary tract infection risk. Current research is hindered by the lack of rob…
View article: The influence of realistic 3D mantle viscosity on Antarctica’s contribution to future global sea levels
The influence of realistic 3D mantle viscosity on Antarctica’s contribution to future global sea levels Open
The response of the Antarctic Ice Sheet (AIS) to climate change is the largest uncertainty in projecting future sea level. The impact of three-dimensional (3D) Earth structure on the AIS and future global sea levels is assessed here by cou…
View article: The bacterial displacement test: an <i>in vitro</i> microbiological test for the evaluation of intermittent catheters and urinary tract infection
The bacterial displacement test: an <i>in vitro</i> microbiological test for the evaluation of intermittent catheters and urinary tract infection Open
Aims Intermittent catheters (ICs) are commonly used in bladder management, but catheter-associated urinary tract infections (CAUTIs) remain challenging. Insertion tips may reduce the risk of CAUTIs by minimizing bacterial transfer along th…
View article: Comparing an Integrated Amphiphilic Surfactant to Traditional Hydrophilic Coatings for the Reduction of Catheter-Associated Urethral Microtrauma
Comparing an Integrated Amphiphilic Surfactant to Traditional Hydrophilic Coatings for the Reduction of Catheter-Associated Urethral Microtrauma Open
Hydrophilic-coated intermittent catheters have improved the experience of intermittent urinary catheterization for patients compared to conventional gel-lubricated uncoated catheters. However, the incorporation of polyvinylpyrrolidone (PVP…
View article: A Revisionist View of the Mid-Pleistocene Transition
A Revisionist View of the Mid-Pleistocene Transition Open
The Mid-Pleistocene Transition (MPT) is commonly characterized as a change in both temperature and ice volume from smaller amplitude, 41-kyr variability to higher amplitude, ~100-kyr variability in the absence of any significant change in …
View article: The amplitude of Antarctic Ice Sheet change during the Pliocene from proxies and modelling
The amplitude of Antarctic Ice Sheet change during the Pliocene from proxies and modelling Open
Despite a major effort to constrain peak sea level during the mid-Pliocene warm period, uncertainties remain large. This interval is of interest because of the analogous CO2 concentration to present day and because of the potential retreat…
View article: Competing climate feedbacks of ice sheet freshwater discharge in a warming world
Competing climate feedbacks of ice sheet freshwater discharge in a warming world Open
Earth's polar ice sheets are projected to undergo significant retreat in the coming centuries if anthropogenic warming were to continue unabated, injecting freshwater stored on land over millennia into oceans and raise the global mean sea …
View article: Climate model differences contribute deep uncertainty in future Antarctic ice loss
Climate model differences contribute deep uncertainty in future Antarctic ice loss Open
Future projections of ice sheets in response to different climate scenarios and their associated contributions to sea level changes are subject to deep uncertainty due to ice sheet instability processes, hampering a proper risk assessment …
View article: Antarctic Ice Sheet simulations driven by CMIP6 climate models under historical and SSP5-8.5 scenarios
Antarctic Ice Sheet simulations driven by CMIP6 climate models under historical and SSP5-8.5 scenarios Open
Antarctic Ice Sheet simulations driven by CMIP6 climate models under historical and SSP5-8.5 scenarios This dataset contains output ice sheet model runs forced by climate boundary conditions provided by CMIP6 climate model output. Each exp…
View article: Antarctic Ice Sheet simulations driven by CMIP6 climate models under historical and SSP5-8.5 scenarios
Antarctic Ice Sheet simulations driven by CMIP6 climate models under historical and SSP5-8.5 scenarios Open
Antarctic Ice Sheet simulations driven by CMIP6 climate models under historical and SSP5-8.5 scenarios This dataset contains output ice sheet model runs forced by climate boundary conditions provided by CMIP6 climate model output. Each exp…
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: Evaluation of an Integrated Amphiphilic Surfactant as an Alternative to Traditional Polyvinylpyrrolidone Coatings for Hydrophilic Intermittent Urinary Catheters
Evaluation of an Integrated Amphiphilic Surfactant as an Alternative to Traditional Polyvinylpyrrolidone Coatings for Hydrophilic Intermittent Urinary Catheters Open
IntroductionPolyvinylpyrrolidone (PVP) is commonly used to provide catheters with a lubricious coating when hydrated, however, it becomes adhesive as it dries which may cause catheters to adhere to the urethral mucosa and potentially leave…
View article: The Influence of the Solid Earth on the Contribution of Marine Sections of the Antarctic Ice Sheet to Future Sea‐Level Change
The Influence of the Solid Earth on the Contribution of Marine Sections of the Antarctic Ice Sheet to Future Sea‐Level Change Open
Seismic tomography models indicate highly variable Earth structure beneath Antarctica with anomalously low shallow mantle viscosities below West Antarctica. An improved projection of the contribution of the Antarctic Ice Sheet to sea‐level…
View article: Constraining the amplitude of Antarctic Ice Sheet change during warm intervals of the Pliocene&#160;
Constraining the amplitude of Antarctic Ice Sheet change during warm intervals of the Pliocene  Open
<div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>Despite a major effort to constrain peak sea level during the mid-Pliocene warm period, unce…
View article: Comparing Glacial‐Geological Evidence and Model Simulations of Ice Sheet Change since the Last Glacial Period in the Amundsen Sea Sector of Antarctica
Comparing Glacial‐Geological Evidence and Model Simulations of Ice Sheet Change since the Last Glacial Period in the Amundsen Sea Sector of Antarctica Open
Since the Last Glacial Maximum ∼20,000 years ago, the Antarctic Ice Sheet has undergone extensive changes, resulting in a much smaller present‐day configuration. Improving our understanding of basic physical processes that played important…
View article: Modeling Northern Hemispheric Ice Sheet Dynamics, Sea Level Change, and Solid Earth Deformation Through the Last Glacial Cycle
Modeling Northern Hemispheric Ice Sheet Dynamics, Sea Level Change, and Solid Earth Deformation Through the Last Glacial Cycle Open
Retreat or advance of an ice sheet perturbs the Earth's solid surface, rotational vector, and the gravitational field, which in turn feeds back onto the evolution of the ice sheet over a range of timescales. Throughout the last glacial cyc…
View article: The influence of the solid Earth on the contribution of marine sections of the Antarctic ice sheet to future sea level change
The influence of the solid Earth on the contribution of marine sections of the Antarctic ice sheet to future sea level change Open
<p>The future retreat of marine-based sectors of the Antarctic Ice Sheet (AIS) and its consequent global mean sea level (GMSL) rise is driven by various climatic and non-climatic feedbacks between ice, ocean, atmosphere, and solid Ea…
View article: Improvements in one-dimensional grounding-line parameterizations in an ice-sheet model with lateral variations (PSUICE3D v2.1)
Improvements in one-dimensional grounding-line parameterizations in an ice-sheet model with lateral variations (PSUICE3D v2.1) Open
The use of a boundary-layer parameterization of buttressing and ice flux across grounding lines in a two-dimensional ice-sheet model is improved by allowing general orientations of the grounding line. This and another modification to the m…
View article: Simulating Marine Isotope Stage 7 with a coupled climate–ice sheet model
Simulating Marine Isotope Stage 7 with a coupled climate–ice sheet model Open
It is widely accepted that orbital variations are responsible for the generation of glacial cycles during the late Pleistocene. However, the relative contributions of the orbital forcing compared to CO2 variations and other feedback mechan…
View article: Could the Last Interglacial Constrain Projections of Future Antarctic Ice Mass Loss and Sea‐Level Rise?
Could the Last Interglacial Constrain Projections of Future Antarctic Ice Mass Loss and Sea‐Level Rise? Open
Previous studies have interpreted Last Interglacial (LIG; ∼ 129–116 ka) sea‐level estimates in multiple different ways to calibrate projections of future Antarctic ice‐sheet (AIS) mass loss and associated sea‐level rise. This study systema…