Results 61 to 70 of about 2,565,243 (371)

The tipping times in an Arctic sea ice system under influence of extreme events

open access: yes, 2020
In light of the rapid recent retreat of Arctic sea ice, the extreme weather events triggering the variability in Arctic ice cover has drawn increasing attention.
Duan, Jinqiao   +4 more
core   +1 more source

Changing state of Arctic sea ice across all seasons

open access: yesEnvironmental Research Letters, 2018
The decline in the floating sea ice cover in the Arctic is one of the most striking manifestations of climate change. In this review, we examine this ongoing loss of Arctic sea ice across all seasons.
J. Stroeve, D. Notz
semanticscholar   +1 more source

SAR deep learning sea ice retrieval trained with airborne laser scanner measurements from the MOSAiC expedition [PDF]

open access: yesThe Cryosphere
Automated sea ice charting from synthetic aperture radar (SAR) has been researched for more than a decade, and we are still not close to unlocking the full potential of automated solutions in terms of resolution and accuracy.
K. Kortum   +8 more
doaj   +1 more source

The reversibility of sea ice loss in a state-of-the-art climate model [PDF]

open access: yes, 2011
Rapid Arctic sea ice retreat has fueled speculation about the possibility of threshold (or ‘tipping point’) behavior and irreversible loss of the sea ice cover. We test sea ice reversibility within a state-of-the-art atmosphere–ocean global climate model
Armour, K. C.   +4 more
core  

The northern sector of the last British ice sheet : maximum extent and demise [PDF]

open access: yes, 2008
Strongly divided opinion has led to competing, apparently contradictory, views on the timing, extent, flow configuration and decay mechanism of the last British Ice Sheet.
Bradwell, Tom   +11 more
core   +2 more sources

Rad27/FEN1 prevents accumulation of Okazaki fragments and ribosomal DNA copy number changes

open access: yesFEBS Letters, EarlyView.
The budding yeast Rad27 is a structure‐specific endonuclease. Here, the authors reveal that Rad27 is crucial for maintaining the stability of the ribosomal RNA gene (rDNA) region. Rad27 deficiency leads to the accumulation of Okazaki fragments and changes in rDNA copy number.
Tsugumi Yamaji   +3 more
wiley   +1 more source

Towards ice core sampling by subsea robotic vehicles [PDF]

open access: yesGeoscientific Instrumentation, Methods and Data Systems
Ice coring has developed into one of the most frequently used sampling methods across cryospheric sciences. Sea ice, firn and glacial ice are sampled using a range of different coring systems.
C. Katlein
doaj   +1 more source

Feasibility Study for an Ice-Based Image Monitoring System for Polar Regions Using Improved Visual Enhancement Algorithms

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Melting and evolution of Arctic Ocean sea ice in summer are one of the main factors affecting sea ice albedo and climate. At present, remote sensing images of sea ice are mainly acquired with the help of payload platforms, such as aircraft or satellites.
Yuchen Wang   +6 more
doaj   +1 more source

Towards a coupled model to investigate wave–sea ice interactions in the Arctic marginal ice zone [PDF]

open access: yesThe Cryosphere, 2020
The Arctic marginal ice zone (MIZ), where strong interactions between sea ice, ocean and atmosphere take place, is expanding as the result of ongoing sea ice retreat.
G. Boutin   +6 more
doaj   +1 more source

Mitochondrial fatty acid oxidation is stimulated by red light irradiation

open access: yesFEBS Letters, EarlyView.
Light at different wavelengths has distinct effects on keratinocyte viability and metabolism. UVA light abrogates metabolic fluxes. Blue and green light have no effect on metabolic fluxes, while red light enhanced oxidative phosphorylation by promoting fatty acid oxidation. Keratinocytes are the primary constituents of sunlight‐exposed epidermis.
Manuel Alejandro Herrera   +4 more
wiley   +1 more source

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