Results 41 to 50 of about 161,658 (309)

Unraveling the Arctic Sea Ice Change since the Middle of the Twentieth Century

open access: yesGeosciences, 2023
Changes in Arctic sea ice since the middle of the last century are explored in this study. Both observations and climate model simulations show an overall sea ice expansion during 1953–1970 but a general sea ice decline afterward. Anthropogenic aerosols,
Nathan Kong, Wei Liu
doaj   +1 more source

Floating Ice-Algal Aggregates below Melting Arctic Sea Ice

open access: yesPLoS ONE, 2013
During two consecutive cruises to the Eastern Central Arctic in late summer 2012, we observed floating algal aggregates in the melt-water layer below and between melting ice floes of first-year pack ice. The macroscopic (1-15 cm in diameter) aggregates had a mucous consistency and were dominated by typical ice-associated pennate diatoms embedded within
Assmy, Philipp   +18 more
openaire   +8 more sources

Robust Arctic warming caused by projected Antarctic sea ice loss

open access: yesEnvironmental Research Letters, 2020
Over the coming century, both Arctic and Antarctic sea ice cover are projected to substantially decline. While many studies have documented the potential impacts of projected Arctic sea ice loss on the climate of the mid-latitudes and the tropics, little
M R England, L M Polvani, L Sun
doaj   +1 more source

Improving Met Office seasonal predictions of Arctic sea ice using assimilation of CryoSat-2 thickness [PDF]

open access: yesThe Cryosphere, 2018
Interest in seasonal predictions of Arctic sea ice has been increasing in recent years owing, primarily, to the sharp reduction in Arctic sea-ice cover observed over the last few decades, a decline that is projected to continue.
E. W. Blockley, K. A. Peterson
doaj   +1 more source

Changes in Sea Surface Temperature and Sea Ice Concentration in the Arctic Ocean over the Past Two Decades

open access: yesRemote Sensing, 2023
With global warming, the decrease in sea ice creates favorable conditions for Arctic activities. Sea surface temperature (SST) is not only an important driven factor of sea ice concentration (SIC) changes but also an important medium of the ocean ...
Meng Yang   +6 more
doaj   +1 more source

In situ primary production in young Antarctic sea ice [PDF]

open access: yes, 2002
An in situ incubation technique used successfully to measure the photosynthetic carbon assimilation of internal algal assemblages within thick multiyear Arctic sea ice was developed and improved to measure the photosynthetic carbon assimilation within ...
Mock, Thomas
core   +1 more source

The Future of Arctic Sea Ice

open access: yesAnnual Review of Earth and Planetary Sciences, 2012
Arctic sea ice is a key indicator of the state of global climate because of both its sensitivity to warming and its role in amplifying climate change. Accelerated melting of the perennial sea ice cover has occurred since the late 1990s, which is important to the pan-Arctic region, through effects on atmospheric and oceanic circulations, the Greenland ...
Maslowski, Wieslaw   +3 more
openaire   +2 more sources

Why Does Arctic Sea Ice Respond More Evidently than Antarctic Sea Ice to Climate Change?

open access: yesOcean-Land-Atmosphere Research, 2023
The current climate change episode has impacted sea ice in the 2 polar regions differently. In the Arctic, remarkable sea ice extent and thickness declines have been observed with a stunning depletion rate of old ice.
Mohammed Shokr, Yufang Ye
doaj   +1 more source

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

open access: yesFEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang   +9 more
wiley   +1 more source

Light Transmission Through Arctic Sea Ice - Large-Scale Studies on Seasonality and Spatial Variability [PDF]

open access: yes, 2013
Arctic sea ice has declined and become thinner and more seasonal during the last decade. One consequence of this is that the surface energy budget of the Arctic Ocean is changing.
Arndt, Stefanie   +2 more
core  

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