Results 31 to 40 of about 27,145 (212)

A 120 000-year record of sea ice in the North Atlantic? [PDF]

open access: yesClimate of the Past, 2019
Although it has been demonstrated that the speed and magnitude of the recent Arctic sea ice decline is unprecedented for the past 1450 years, few records are available to provide a paleoclimate context for Arctic sea ice extent. Bromine enrichment in ice
N. Maffezzoli   +13 more
doaj   +1 more source

Antarctic Sea Ice—A Polar Opposite? [PDF]

open access: yesOceanography, 2012
As the world's ice diminishes in the face of climate change—from the dramatic decline in Arctic sea ice, to thinning at the margins of both the Greenland and Antarctic ice sheets, to retreating mountain glaciers the world over—Antarctic sea ice presents ...
Sharon E. Stammerjohn   +3 more
doaj  

Polar Sea Ice Monitoring Using HY-2A Scatterometer Measurements

open access: yesRemote Sensing, 2016
A sea ice detection algorithm based on Fisher’s linear discriminant analysis is developed to segment sea ice and open water for the Ku-band scatterometer onboard the China’s Hai Yang 2A Satellite (HY-2A/SCAT).
Mingming Li   +4 more
doaj   +1 more source

Record low 2022 Antarctic sea ice led to catastrophic breeding failure of emperor penguins

open access: yesCommunications Earth & Environment, 2023
The spring season of 2022 saw record low sea ice extent in Antarctica that persisted throughout the year. At the beginning of December, the Antarctic sea ice extent was tracking with the all-time low set in 2021. The greatest regional negative anomaly of
Peter T. Fretwell   +2 more
doaj   +1 more source

Ice extent trends in the Barents and Kara Seas during recent climate change

open access: yesРоссийская Арктика
Certain areas of the Arctic region, primarily the Barents and Kara Seas, have high resource potential. This is the place where hydrocarbon deposits are explored and developed, and where the main transport corridor of the Northern Sea Route begins.
Karandasheva T.K.   +3 more
doaj   +1 more source

The spatiotemporal patterns of sea ice in the Bohai Sea during the winter seasons of 2000–2016

open access: yesInternational Journal of Digital Earth, 2019
In this study, sea ice thickness (SIT) and sea ice extent (SIE) in the Bohai Sea from 2000 to 2016 were investigated. A surface heat balance equation was applied to calculate SIT using ice surface temperatures estimated from the Moderate Resolution ...
Lunxi Ouyang   +8 more
doaj   +1 more source

Interannual and seasonal variability of Arctic sea ice extent according to satellite observations

open access: yesРоссийская Арктика, 2019
The interannual and seasonal changes of Arctic sea ice extent according to satellite observations from 1978–2018 are analyzed. Steady reduction in the sea ice cover over the research period is reported.
Yulin A.V.   +2 more
doaj   +1 more source

Record Early Sea Ice Loss in Southeastern Hudson Bay in Spring 2024

open access: yesGeophysical Research Letters
Hudson Bay seasonal sea‐ice cover plays an important role in marine ecosystems and human activities. Spring 2024 witnessed a uniquely early southeastern opening, leading to basin‐wide sea ice extent falling 5σ below the 1979–2023 average.
C. Soriot, J. Stroeve, A. Crawford
doaj   +1 more source

Modeled Arctic sea ice evolution through 2300 in CMIP5 extended RCPs [PDF]

open access: yesThe Cryosphere, 2014
Almost all global climate models and Earth system models that participated in the Coupled Model Intercomparison Project 5 (CMIP5) show strong declines in Arctic sea ice extent and volume under the highest forcing scenario of the representative ...
P. J. Hezel, T. Fichefet, F. Massonnet
doaj   +1 more source

Nutrient/TOR signaling controls adipose mitochondrial transcription factor A (TFAM) to regulate organismal growth in Drosophila

open access: yesFEBS Letters, EarlyView.
Animals must match their growth rate to available nutrients. We show that in Drosophila larvae, the nutrient‐sensing TOR kinase controls growth by regulating levels of TFAM, a key regulator of mitochondrial function, in the adipose tissue. When nutrients are abundant, high TOR activity suppresses TFAM, lowering mitochondrial bioenergetic activity and ...
Shrivani Sriskanthadevan‐Pirahas   +4 more
wiley   +1 more source

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