☆ 4.2 Editorial Material

Introduction: Processes and Palaeo-Environmental Changes in the Arctic from Past to Present (PalaeoArc) special issue

ARCTIC ANTARCTIC AND ALPINE RESEARCH (2022)

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Article Geosciences, Multidisciplinary

Evolution of the Laurentide and Innuitian ice sheets prior to the Last Glacial Maximum (115 ka to 25 ka)

April S. Dalton et al.

Summary: By synthesizing geochronological data, stratigraphic and geomorphological data, as well as numerical modeling output, we reconstructed the Laurentide and Innuitian ice sheets during the last glacial cycle. Our findings suggest that there were multiple cycles of rapid ice sheet growth and decay in different areas of North America between 115 ka and 25 ka, leading to significant changes in global mean sea level and landscape evolution.

EARTH-SCIENCE REVIEWS (2022)

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Article Geography, Physical

Modern and early Holocene ice shelf sediment facies from Petermann Fjord and northern Nares Strait, northwest Greenland

Anne Jennings et al.

Summary: Based on sediment cores and geophysical data, this study presents the characteristics of sub and pro ice shelf environments in NW Greenland. The research reconstructs the glacial and oceanographic history over the last 11,000 years and uses the modern ice shelf sediment facies to infer the past presence of ice shelves in northern Nares Strait.

QUATERNARY SCIENCE REVIEWS (2022)

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Article Geography, Physical

Catastrophic ice shelf collapse along the NW Laurentide Ice Sheet highlights the vulnerability of marine-based ice margins

J. H. England et al.

Summary: This study documents the deposition and chronological record of a massive ice shelf from the former Laurentide Ice Sheet. The ice shelf advanced and retreated over a span of about 400 years, and its catastrophic breakup coincided with rapid warming of the atmosphere and ocean. The findings suggest that current ice dynamics models may underestimate the sensitivity of similar margins in Antarctica to ongoing global warming, emphasizing the importance of this research for estimating future sea level rise.

QUATERNARY SCIENCE REVIEWS (2022)

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Article Environmental Sciences

MIS 3 age of the Veiki moraine in N Sweden - Dating the landform record of an intermediate-sized ice sheet in Scandinavia

Helena Alexanderson et al.

Summary: By using optically stimulated luminescence (OSL) and radiocarbon dating, researchers have determined that the Veiki moraine in northern Sweden formed during the third oscillation of ice volume (MIS 3), with an estimated age range of 56-39 thousand years ago. Sedimentation continued in the area during MIS 3 and the Holocene, with a pause during the Last Glacial Maximum when the area was covered by ice.

ARCTIC ANTARCTIC AND ALPINE RESEARCH (2022)

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Editorial Material Environmental Sciences

How is land ice changing in the Arctic, and what is the influence on sea level?

Ted Scambos et al.

ARCTIC ANTARCTIC AND ALPINE RESEARCH (2022)

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Article Environmental Sciences

Late glacial and Holocene glaciation history of North and Northeast Greenland

Nicolaj K. Larsen et al.

Summary: Northeast Greenland has experienced significant changes in the Greenland Ice Sheet, and this study provides new age constraints for the deglaciation process. By analyzing cosmogenic exposure ages, the authors determine that the outer coast region deglaciated between 12.8 +/- 0.6 and 11.5 +/- 0.2 ka, while the region close to the present ice margin deglaciated 2 to 4 ka later between 9.2 +/- 0.3 to 8.6 +/- 0.3 ka. These findings contribute to our understanding of the glaciation history of the Greenland Ice Sheet and can be useful for future ice sheet models.

ARCTIC ANTARCTIC AND ALPINE RESEARCH (2022)

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Article Environmental Sciences

Distinctive iceberg ploughmarks on the mid-Norwegian margin: Tidally influenced chains of pits with implications for iceberg drift

Dag Ottesen et al.

Summary: This study identified a series of asymmetrical to circular pits on the upper slope, believed to be formed by iceberg keels grounding on the seabed during low tides. The pits are considered as evidence of iceberg drift in the local marine area, as well as the evolution process of the Norwegian shelf after the Last Glacial Maximum.

ARCTIC ANTARCTIC AND ALPINE RESEARCH (2022)

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Article Environmental Sciences

Mineral and isotopic (Nd, Sr) signature of fine-grained deglacial and Holocene sediments from the Mackenzie Trough, Arctic Canada

Henrik Sward et al.

Summary: This article investigates the origin and composition of dolomites in Arctic Ocean sediments. The study analyzed sediments from the Mackenzie Trough and found that the dolomite content and isotopic signals remained constant in different marine units. The study suggests that the dolomite originates from the Mackenzie River, but further research is needed to confirm this.

ARCTIC ANTARCTIC AND ALPINE RESEARCH (2022)

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Article Environmental Sciences

Multiproxy investigation of the last 2,000 years BP marine paleoenvironmental record along the western Spitsbergen margin

Fiorenza Torricella et al.

Summary: A multidisciplinary approach including fossil assemblages and geochemical analysis was used to reconstruct the environmental and oceanographic changes on the western margin of Spitsbergen over the last 2,000 years BP. The study identified two warm periods associated with the Roman Warm Period and the Medieval Warm Period, alternating with colder oceanic conditions and sea ice coverage during the Dark Ages and the beginning of the Little Ice Age. The occurrence of ice-rafted debris and a specific diatom genus suggests increased meltwater runoff from local glaciers during the Medieval Warm Period.

ARCTIC ANTARCTIC AND ALPINE RESEARCH (2022)

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Article Environmental Sciences

Timing of glacial-non-glacial stages in Finland: An exploratory analysis of the OSL data

P. Sarala et al.

Summary: The Optically Stimulated Luminescence (OSL) age database of Finland has been established and analyzed, showing an increasing trend in ages from the youngest to the oldest. However, the standard error of ages in the 70-115 ka group is exceptionally high. The results were compared to the established Northwest European chronostratigraphical stages, showing relatively good correspondence.

ARCTIC ANTARCTIC AND ALPINE RESEARCH (2022)

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Article Environmental Sciences

Environmental changes in Krossfjorden, Svalbard, since 1950: Benthic foraminiferal and stable isotope evidence

Viviana M. Gamboa-Sojo et al.

Summary: Environmental changes in the past 50 years were investigated using a sediment core from inner Krossfjorden, Svalbard. Benthic foraminifera and stable isotopes were analyzed to study factors such as water turbidity, salinity, nutrient content, and temperature changes.

ARCTIC ANTARCTIC AND ALPINE RESEARCH (2022)

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Article Environmental Sciences

Late glacial retreat of the Lancaster Sound Ice Stream and early Holocene onset of Arctic/Atlantic throughflow in the Arctic island channels

Robert Kelleher et al.

Summary: The timing of ice retreat and channel opening in Northwestern Baffin Bay and its impact on the regional ocean environment are documented using various proxies. The retreat of the Lancaster Sound Ice Stream (LSIS) occurred before major iceberg calving events, and the opening of Parry Channel coincided with the end of one of these events. The opening of Nares Strait was associated with increased biogenic silica and dissolution of CaCO3.

ARCTIC ANTARCTIC AND ALPINE RESEARCH (2022)

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Article Geography, Physical

Tunnel valley formation beneath deglaciating mid-latitude ice sheets: Observations and modelling

James D. Kirkham et al.

QUATERNARY SCIENCE REVIEWS (2022)

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Article Environmental Sciences

Sedimentary facies and clay mineralogy of the late Pleistocene Landsort Deep sediments, Baltic Sea - Implications for the Baltic Ice Lake development

Raisa Alatarvas et al.

Summary: The Landsort Deep in the Baltic Sea holds an important sediment record for studying the retreat history of the Fennoscandian Ice Sheet and the development of the Baltic Ice Lake. The analysis of sediment characteristics reveals changes in climate and ice dynamics, providing valuable insights into the region's past.

ARCTIC ANTARCTIC AND ALPINE RESEARCH (2022)

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Article Environmental Sciences

The Arctic has warmed nearly four times faster than the globe since 1979

Mika Rantanen et al.

Summary: Analyses of observations and climate simulations suggest that Arctic Amplification has been stronger than expected and underestimated in climate models. The warming in the Arctic has been nearly four times faster than the global average over the past 43 years, which is a higher ratio than previously reported. This finding indicates the urgency and severity of Arctic warming.

COMMUNICATIONS EARTH & ENVIRONMENT (2022)

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Article Environmental Sciences

The role of ocean and atmospheric dynamics in the marine-based collapse of the last Eurasian Ice Sheet

Hans Petter Sejrup et al.

Summary: Information from former ice sheets is crucial for understanding the response of current ice sheets to external forces. This study reconstructs the last deglaciation of marine sectors of the Eurasian Ice Sheet, highlighting the separation of ice sheets due to the retreat of ice streams in the Norwegian Channel, Barents Sea, and Kara-Barents Sea-Svalbard regions. The study shows that the deglaciation was primarily driven by temperature-related surface mass balance in the south and oceanic conditions in the north, emphasizing the nonlinearity in ice sheet response and the significance of ocean-ice-atmosphere dynamics.

COMMUNICATIONS EARTH & ENVIRONMENT (2022)

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Article Geography, Physical

Recent progress on combining geomorphological and geochronological data with ice sheet modelling, demonstrated using the last British-Irish Ice Sheet

Jeremy C. Ely et al.

Summary: Comparing numerical model simulations with empirical evidence helps quantify the degree of fit between the two, leading to more accurate reconstructions of palaeo-ice sheets. Reconciling numerical modelling and empirical evidence is crucial for achieving palaeo-ice sheet reconstructions with greater explanatory and predictive power.

JOURNAL OF QUATERNARY SCIENCE (2021)

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Article Multidisciplinary Sciences

A new global ice sheet reconstruction for the past 80000 years

Evan J. Gowan et al.

Summary: The uncertainty of past global ice sheet evolution, especially the issue of missing ice volume during the Last Glacial Maximum, has been a challenge. Researchers have developed a global ice sheet reconstruction for the past 80,000 years, resolving the missing ice problem during the Last Glacial Maximum. However, discrepancies with proxy-based sea level reconstructions before the Last Glacial Maximum highlight the complexity of the relationship between marine delta O-18 and sea level changes.

NATURE COMMUNICATIONS (2021)

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Article Geography, Physical

Age and duration of a MIS 3 interstadial in the Fennoscandian Ice Sheet core area-Implications for ice sheet dynamics

Johan Kleman et al.

Summary: Studies have challenged previous assumptions of continuous ice cover in the core area of the Fennoscandian Ice Sheet during the Pleistocene, with evidence suggesting ice-free conditions in central Scandinavia from around 55 ka to about 35 ka.

QUATERNARY SCIENCE REVIEWS (2021)

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Article Environmental Sciences

Testing the stratigraphic consistency of Pleistocene microfossil bioevents identified on the Alpha and Lomonosov Ridges, Arctic Ocean

Flor Vermassen et al.

Summary: Two distinct biostratigraphic approaches were used to study Marine Isotope Stage 11 in Arctic Ocean sediments. The investigation of a new core revealed that the Turborotalita egelida horizon falls between MIS 15 and MIS 17. These findings emphasize the importance of caution in interpreting paleoceanographic records.

ARCTIC ANTARCTIC AND ALPINE RESEARCH (2021)

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Article Geosciences, Multidisciplinary

Carbon release through abrupt permafrost thaw

Merritt R. Turetsky et al.

NATURE GEOSCIENCE (2020)

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Review Geography, Physical

An updated radiocarbon-based ice margin chronology for the last deglaciation of the North American Ice Sheet Complex

April S. Dalton et al.

QUATERNARY SCIENCE REVIEWS (2020)

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Article Geosciences, Multidisciplinary

Eurasian Ice Sheet collapse was a major source of Meltwater Pulse 1A 14,600 years ago

Jo Brendryen et al.

NATURE GEOSCIENCE (2020)

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Article Multidisciplinary Sciences

The configuration of Northern Hemisphere ice sheets through the Quaternary

Christine L. Batchelor et al.

NATURE COMMUNICATIONS (2019)

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Article Geology

Was the Laurentide Ice Sheet significantly reduced during Marine Isotope Stage 3?

April S. Dalton et al.

GEOLOGY (2019)

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Article Geography, Physical

Hudson Bay was not deglaciated during MIS-3

Gifford H. Miller et al.

QUATERNARY SCIENCE REVIEWS (2019)

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Review Geosciences, Multidisciplinary

Lack of evidence for a substantial sea-level fluctuation within the Last Interglacial

Natasha L. M. Barlow et al.

NATURE GEOSCIENCE (2018)

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Article Multidisciplinary Sciences

Sea-level records from the US mid-Atlantic constrain Laurentide Ice Sheet extent during Marine Isotope Stage 3

T. Pico et al.

NATURE COMMUNICATIONS (2017)

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Article Geography, Physical

The last Eurasian ice sheets - a chronological database and time-slice reconstruction, DATED-1

Anna L. C. Hughes et al.

BOREAS (2016)

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Article Geography, Physical

An East Siberian ice shelf during the Late Pleistocene glaciations: Numerical reconstructions

Florence Colleoni et al.

QUATERNARY SCIENCE REVIEWS (2016)

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Editorial Material Geography, Physical

PAST Gateways (Palaeo-Arctic Spatial and Temporal Gateways): Introduction and overview

Colm O. Cofaigh et al.

QUATERNARY SCIENCE REVIEWS (2016)

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Article Geography, Physical

Constraining the Late Pleistocene history of the Laurentide Ice Sheet by dating the Missinaibi Formation, Hudson Bay Lowlands, Canada

April S. Dalton et al.

QUATERNARY SCIENCE REVIEWS (2016)

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Review Geochemistry & Geophysics

Interglacials of the last 800,000years

A. Berger et al.

REVIEWS OF GEOPHYSICS (2016)

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Article Multidisciplinary Sciences

Evidence for an ice shelf covering the central Arctic Ocean during the penultimate glaciation

Martin Jakobsson et al.

NATURE COMMUNICATIONS (2016)

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Article Multidisciplinary Sciences

First physical evidence for forested environment in the Arctic during MIS 3

Pertti Sarala et al.

SCIENTIFIC REPORTS (2016)

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Editorial Material Geography, Physical

The dynamic Arctic Introduction

Martin Jakobsson et al.

QUATERNARY SCIENCE REVIEWS (2014)

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Repeated Pleistocene glaciation of the East Siberian continental margin

Frank Niessen et al.

NATURE GEOSCIENCE (2013)

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Article Multidisciplinary Sciences

Deglacial rapid sea level rises caused by ice-sheet saddle collapses

Lauren J. Gregoire et al.

NATURE (2012)

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Article Multidisciplinary Sciences

Reconstructed changes in Arctic sea ice over the past 1,450 years

Christophe Kinnard et al.

NATURE (2011)

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Article Geography, Physical

The PONAM project

Christian Hjort et al.

BOREAS (2010)

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Article Geography, Physical

New insights on Arctic Quaternary climate variability from palaeo-records and numerical modelling

Martin Jakobsson et al.

QUATERNARY SCIENCE REVIEWS (2010)

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Article Multidisciplinary Sciences

Arctic freshwater forcing of the Younger Dryas cold reversal

L Tarasov et al.

NATURE (2005)

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Review Geochemistry & Geophysics

Heinrich events: Massive late pleistocene detritus layers of the North Atlantic and their global climate imprint

SR Hemming

REVIEWS OF GEOPHYSICS (2004)

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Late quaternary ice sheet history of northern Eurasia

JI Svendsen et al.

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