James A. Screen
YOU?
Author Swipe
View article: Diverse and Weak Simulated Stratospheric Responses to Future Arctic Sea‐Ice Loss
Diverse and Weak Simulated Stratospheric Responses to Future Arctic Sea‐Ice Loss Open
Climate models project that the Arctic Ocean could see an ice‐free summer by the middle of this century. Through coordinated simulations, the Polar Amplification Model Intercomparison Project (PAMIP) aims to elucidate the causes and conseq…
View article: Extreme Antarctic Sea Ice Loss Facilitated by Negative Shift of Southern Annular Mode
Extreme Antarctic Sea Ice Loss Facilitated by Negative Shift of Southern Annular Mode Open
Antarctic sea ice area exhibited an abrupt decline in 2015–2016, transitioning from a near record maximum state to a then‐record minimum state. The underlying drivers are still being studied, raising questions whether this marks the onset …
View article: The impact of Arctic sea‐ice loss on winter weather in the British Isles
The impact of Arctic sea‐ice loss on winter weather in the British Isles Open
We use simulations from the Polar Amplification Model Intercomparison Project to understand the impact of Arctic sea‐ice loss in isolation, as well as within the context of general greenhouse warming, on projections of wintertime weather f…
View article: Model‐Dependent Response of Low Clouds to Arctic Sea‐Ice Loss
Model‐Dependent Response of Low Clouds to Arctic Sea‐Ice Loss Open
Clouds play a key role in the climate of the Arctic region. Observational evidence suggests that sea‐ice loss fosters increased cloud cover due to enhanced surface turbulent fluxes. Yet, it is not clear whether this mechanism is (well) rep…
View article: Ocean-atmosphere coupling enhances Eurasian cooling in response to historical Barents-Kara sea-ice loss
Ocean-atmosphere coupling enhances Eurasian cooling in response to historical Barents-Kara sea-ice loss Open
The potential for Arctic sea-ice loss, particularly in the Barents-Kara Seas, to induce Eurasian winter cooling remains contentious. Despite a significant correlation between Barents-Kara-Seas sea-ice loss and Eurasian winter cooling in ob…
View article: Minimal Arctic Sea Ice Loss in the Last 20 Years, Consistent With Internal Climate Variability
Minimal Arctic Sea Ice Loss in the Last 20 Years, Consistent With Internal Climate Variability Open
Over the past two decades, Arctic sea ice loss has slowed considerably, with no statistically significant decline in September sea ice area since 2005. This pause is robust across observational data sets, metrics, and seasons. Large‐ensemb…
View article: The Impact of a Subpolar North Atlantic Freshwater Anomaly on Eurasian Winter Climate
The Impact of a Subpolar North Atlantic Freshwater Anomaly on Eurasian Winter Climate Open
The potential impact of a subpolar North Atlantic freshwater anomaly on sea surface temperature and the overlying atmosphere on seasonal time scales is investigated. A coupled climate model is perturbed with a major freshwater anomaly (FWA…
View article: The Tug-of-War on the Storm Tracks between Sea Ice Loss and Ocean Warming Is Mainly an Atlantic Phenomenon
The Tug-of-War on the Storm Tracks between Sea Ice Loss and Ocean Warming Is Mainly an Atlantic Phenomenon Open
The effects of Arctic sea ice loss or global ocean surface warming on the Northern Hemisphere storm tracks and jet streams in boreal winter are examined using simulations from the Polar Amplification Model Intercomparison Project. The Atla…
View article: Investigating the inability of climate models to reproduce observed increases in summer Greenland Blocking
Investigating the inability of climate models to reproduce observed increases in summer Greenland Blocking Open
Summertime atmospheric blocking over Greenland promotes melting of the Greenland ice sheet, which is known to be a major contributor to sea level rise. In the early twenty-first century, strong, persistent Greenland blocking was observed, …
View article: Western Mediterranean Droughts Fostered by Arctic Sea Ice Loss
Western Mediterranean Droughts Fostered by Arctic Sea Ice Loss Open
Cutoff lows (COLs), defined as isolated midtropospheric low pressure systems, are responsible for a large fraction of the annual mean and extreme precipitation over the Mediterranean Sea region. In this study, we quantify the impacts from …
View article: Extreme Antarctic Sea Ice Loss facilitated by negative shift of Southern Annular Mode
Extreme Antarctic Sea Ice Loss facilitated by negative shift of Southern Annular Mode Open
View article: Surprising, but not unexpected, multi-decadal pause in Arctic sea ice loss
Surprising, but not unexpected, multi-decadal pause in Arctic sea ice loss Open
View article: Teleconnection from Arctic warming suppresses long-term warming in central Eurasia
Teleconnection from Arctic warming suppresses long-term warming in central Eurasia Open
Whether the rapid warming of the Arctic, particularly the Barents-Kara Sea (BKS), substantially affects the Eurasian winter climate has been debated for over a decade. Here, we use an extended dynamical adjustment method to separate the ef…
View article: No detectable decrease in extreme cold-related mortality in Canada from Arctic sea ice loss
No detectable decrease in extreme cold-related mortality in Canada from Arctic sea ice loss Open
Arctic amplification (AA), the phenomenon by which Arctic surface temperatures are warming faster than the global average, may have significant unexplored impacts on temperature-related mortality in human populations across Canada. We expl…
View article: Confronting Earth System Model trends with observations
Confronting Earth System Model trends with observations Open
Anthropogenically forced climate change signals are emerging from the noise of internal variability in observations, and the impacts on society are growing. For decades, Climate or Earth System Models have been predicting how these climate…
View article: Lessened projections of Arctic warming and wetting after correcting for model errors in global warming and sea ice cover
Lessened projections of Arctic warming and wetting after correcting for model errors in global warming and sea ice cover Open
Credible projections of Arctic warming and wetting (AWW) are essential for informed decision-making in a changing climate. However, current AWW projections from state-of-the-art climate models carry uncertainties. Using observational datas…
View article: Incomplete Arctic Sea‐Ice Recovery Under CO<sub>2</sub> Removal and Its Effects on the Winter Atmospheric Circulation
Incomplete Arctic Sea‐Ice Recovery Under CO<sub>2</sub> Removal and Its Effects on the Winter Atmospheric Circulation Open
This study explores the response of Arctic sea ice to CO 2 removal and its subsequent effects on the winter Northern Hemisphere atmospheric circulation. Using multimodel ensembles from the Carbon Dioxide Removal Model Intercomparison Proje…
View article: Greenland summer blocking characteristics: an evaluation of a high-resolution multi-model ensemble
Greenland summer blocking characteristics: an evaluation of a high-resolution multi-model ensemble Open
Atmospheric blocking is a phenomenon that can lead to extreme weather events over a large region, yet its causes are not fully understood. Global climate models show limitations in representing Northern Hemisphere blocking, especially its …
View article: Models and observations agree on fewer and milder midlatitude cold extremes even over recent decades of rapid Arctic warming
Models and observations agree on fewer and milder midlatitude cold extremes even over recent decades of rapid Arctic warming Open
An apparent increase in observed cold extremes over recent decades in the northern midlatitudes has been reported, in contrast to robust decreases predicted by climate models. This discrepancy has led to suggestions that models fail to acc…
View article: Comparing the Atmospheric Responses to Reduced Arctic Sea Ice, a Warmer Ocean, and Increased CO2 and Their Contributions to Projected Change at 2°C Global Warming
Comparing the Atmospheric Responses to Reduced Arctic Sea Ice, a Warmer Ocean, and Increased CO2 and Their Contributions to Projected Change at 2°C Global Warming Open
We consider the combined and individual influences of Arctic sea ice loss, sea surface temperature (SST) warming, and the direct radiative effect of increased CO 2 on the Northern Hemispheric climate. The surface climate (e.g., temperature…
View article: Emerging signals of climate change from the equator to the poles: new insights into a warming world
Emerging signals of climate change from the equator to the poles: new insights into a warming world Open
The reality of human-induced climate change is unequivocal and exerts an ever-increasing global impact. Access to the latest scientific information on current climate change and projection of future trends is important for planning adaptat…
View article: CMIP6 Models Underestimate ENSO Teleconnections in the Southern Hemisphere
CMIP6 Models Underestimate ENSO Teleconnections in the Southern Hemisphere Open
This study evaluates the capability of the Coupled Model Intercomparison Project Phase 6 (CMIP6) models to simulate El Niño‐Southern Oscillation teleconnections in the Southern Hemisphere during austral summer. The wave trains from the tro…
View article: Assessing the Spurious Impacts of Ice-Constraining Methods on the Climate Response to Sea Ice Loss Using an Idealized Aquaplanet GCM
Assessing the Spurious Impacts of Ice-Constraining Methods on the Climate Response to Sea Ice Loss Using an Idealized Aquaplanet GCM Open
Coupled climate model simulations designed to isolate the effects of Arctic sea ice loss often apply artificial heating, either directly to the ice or through modification of the surface albedo, to constrain sea ice in the absence of other…
View article: Influence of Regional Sea Ice Loss on the Arctic Stratospheric Polar Vortex
Influence of Regional Sea Ice Loss on the Arctic Stratospheric Polar Vortex Open
Based on multi‐model large‐ensemble experiments provided by Polar Amplification Model Intercomparison Project (PAMIP), we investigate the influence of the projected sea ice loss in Barents‐Kara Seas (BKS) and Sea of Okhotsk (SOK) on the Ar…
View article: Missing Increase in Summer Greenland Blocking in Climate Models
Missing Increase in Summer Greenland Blocking in Climate Models Open
Summertime Greenland blocking (GB) can drive melting of the Greenland ice sheet, which has global implications. A strongly increasing trend in GB in the early twenty‐first century was observed but is missing in climate model simulations. H…
View article: Exploring Mechanisms for Model‐Dependency of the Stratospheric Response to Arctic Warming
Exploring Mechanisms for Model‐Dependency of the Stratospheric Response to Arctic Warming Open
The Arctic is estimated to have warmed up to four times faster than the rest of the globe since the 1980s. There is significant interest in understanding the mechanisms by which such warming may impact weather and climate at lower latitude…
View article: Steady but model dependent Arctic amplification of the forced temperature response in 21st century CMIP6 projections
Steady but model dependent Arctic amplification of the forced temperature response in 21st century CMIP6 projections Open
We examine sources of uncertainty in projections of Arctic amplification (AA) using the CMIP6 multi-model (MM) ensemble and single model initial-condition large ensembles of historical and future scenario simulations. In the CMIP6 MM mean,…
View article: Assessing the Spurious Impacts of Ice-Constraining Methods on the Climate Response to Sea-Ice Loss using an Idealised Aquaplanet GCM
Assessing the Spurious Impacts of Ice-Constraining Methods on the Climate Response to Sea-Ice Loss using an Idealised Aquaplanet GCM Open
Coupled climate model simulations designed to isolate the effects of Arctic sea-ice loss often apply artificial heating, either directly to the ice or through modification of the surface albedo, to constrain sea-ice in the absence of other…
View article: Unraveling the Forcings behind West Antarctic Summer Melt: CMIP6 Perspectives on Remote Climate Drivers
Unraveling the Forcings behind West Antarctic Summer Melt: CMIP6 Perspectives on Remote Climate Drivers Open
The circulation pattern conducive to summer surface melt over the Ross Ice Shelf in West Antarctica is intricately linked to sea surface temperature anomalies in the tropical central-eastern Pacific associated with El Niño, along with…
View article: Response of winter climate and extreme weather to projected Arctic sea-ice loss in very large-ensemble climate model simulations&#160;
Response of winter climate and extreme weather to projected Arctic sea-ice loss in very large-ensemble climate model simulations  Open
Arctic sea-ice loss and amplified Arctic warming have been one striking signature of climate change, which have important impacts on climate variability in the Arctic and mid-low latitudes. Climate modeling including the Polar Amplificatio…