Results 21 to 30 of about 190,113 (342)

Summertime linkage between Antarctic sea-ice extent and ice-shelf basal melting through Antarctic coastal water masses’ variability: a circumpolar Southern Ocean model study

open access: yesEnvironmental Research Letters, 2021
Recent observations indicate that two cryospheric components, namely the Antarctic sea ice and ice shelf over the Southern Ocean, have been changing over the decades. Here we analyze results from an ocean–sea ice–ice shelf model to examine variability in
Kazuya Kusahara
doaj   +1 more source

An Improved Algorithm for the Retrieval of the Antarctic Sea Ice Freeboard and Thickness from ICESat-2 Altimeter Data

open access: yesRemote Sensing, 2022
ICESat-2 altimeter data could be used to estimate sea ice freeboard and thickness values with a higher measuring accuracy than that achievable with data provided by previous altimeter satellites.
Xiaoping Pang   +6 more
doaj   +1 more source

A regime shift in seasonal total Antarctic sea ice extent in the twentieth century

open access: yesNature Climate Change, 2022
In stark contrast to the Arctic, there have been statistically significant positive trends in total Antarctic sea ice extent since 1979. However, the short and highly variable nature of observed Antarctic sea ice extent limits the ability to fully ...
R. Fogt   +3 more
semanticscholar   +1 more source

The relative role of the subsurface Southern Ocean in driving negative Antarctic Sea ice extent anomalies in 2016–2021

open access: yesCommunications Earth & Environment, 2022
The low Antarctic sea ice extent following its dramatic decline in late 2016 has persisted over a multiyear period. However, it remains unclear to what extent this low sea ice extent can be attributed to changing ocean conditions.
Liping Zhang   +6 more
semanticscholar   +1 more source

First results of Antarctic sea ice type retrieval from active and passive microwave remote sensing data [PDF]

open access: yesThe Cryosphere, 2023
Polar sea ice is one of the Earth's climate components that has been significantly affected by the recent trend of global warming. While the sea ice area in the Arctic has been decreasing at a rate of about 4 % per decade, the multi-year ice (MYI), also ...
C. Melsheimer   +3 more
doaj   +1 more source

Impacts of Observed Extreme Antarctic Sea Ice Conditions on the Southern Hemisphere Atmosphere

open access: yesAtmosphere, 2022
The Antarctic sea ice has undergone dramatic changes in recent years, with the highest recorded sea ice extent in 2014 and the lowest in 2017. We investigated the impacts of the observed changes in these two extremes of Antarctic sea ice conditions on ...
Zhu Zhu, Mirong Song
doaj   +1 more source

Sensitivity of the Antarctic ice sheets to the warming of marine isotope substage 11c [PDF]

open access: yesThe Cryosphere, 2021
Studying the response of the Antarctic ice sheets during periods when climate conditions were similar to the present can provide important insights into current observed changes and help identify natural drivers of ice sheet retreat. In this context, the
M. Mas e Braga   +6 more
doaj   +1 more source

Recent changes in Antarctic Sea Ice [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2015
In contrast to the Arctic, total sea ice extent (SIE) across the Southern Ocean has increased since the late 1970s, with the annual mean increasing at a rate of 186×10 3  km 2 per decade (1.5% per decade; p <0.01) for 1979–2013.
Turner, John   +4 more
openaire   +4 more sources

Analysis of Spatiotemporal Variations and Influencing Factors of Sea Ice Extent in the Arctic and Antarctic

open access: yesRemote Sensing, 2023
The 44 years (1979–2022) of satellite-derived sea ice extent in the Arctic and Antarctic reveals the details and new trends in the process of polar sea ice coverage changes.
Xiaoyu Sun   +8 more
doaj   +1 more source

Antarctic Sea Ice--a Habitat for Extremophiles [PDF]

open access: yesScience, 2002
The pack ice of Earth's polar oceans appears to be frozen white desert, devoid of life. However, beneath the snow lies a unique habitat for a group of bacteria and microscopic plants and animals that are encased in an ice matrix at low temperatures and light levels, with the only liquid being pockets of concentrated brines. Survival in these conditions
Thomas, D., Dieckmann, Gerhard
openaire   +4 more sources

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