Results 61 to 70 of about 112,938 (316)
Advanced Intelligent Systems, EarlyView.This article proposes a polar robot that utilizes assisted sail and multimode motion to achieve energy‐saving. The design, modeling, and experimental methods are introduced. The results show that the energy‐saving effect of the robot using a multimode energy savings control strategy reaches 21.19%, providing technical support for long‐term polar ...
Yongsheng Luo +8 more
wiley +1 more source
Winds and Meltwater Together Lead to Southern Ocean Surface Cooling and Sea Ice Expansion
Geophysical Research Letters, 2023 Southern Ocean surface cooling and Antarctic sea ice expansion from 1979 through 2015 have been linked both to changing atmospheric circulation and melting of Antarctica's grounded ice and ice shelves.
Lettie A. Roach +5 more
doaj +1 more source
Geosciences, 2022 Antarctic sea ice is an essential component of the global climate system. Reconstructions of Antarctic sea ice from marine sediment cores are a vital resource to improve the representation of Antarctic sea ice in climate models and to better understand ...
Claire S. Allen, Zelna C. Weich
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Remote Sensing, 2020 The presence of sea ice leads in the sea ice cover represents a key feature in polar regions by controlling the heat exchange between the relatively warm ocean and cold atmosphere due to increased fluxes of turbulent sensible and latent heat.
F. Reiser, S. Willmes, G. Heinemann
semanticscholar +1 more source
Ice thickness regulates heat flux in permanently ice‐covered lakes
Limnology and Oceanography, EarlyView.Abstract The permanently ice‐covered lakes of Taylor Valley, Antarctica, are rare ecosystems where permanent ice cover and year‐round vertically stable water columns provide critical redox zones for cold‐adapted microorganisms. Using 30 yr of limnological data from the McMurdo Dry Valleys Long‐Term Ecological Research program, we assessed the water ...
Hilary A. Dugan +6 more
wiley +1 more source
A twenty-first century structural change in Antarctica’s sea ice system
Communications Earth & EnvironmentFrom 1979 to 2016, total Antarctic sea ice extent experienced a positive trend with record winter maxima in 2012 and 2014. Record summer minima followed within the period 2017-2024, raising the possibility that the Antarctic sea ice system might be ...
Marilyn N. Raphael +4 more
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Multi-year spatial distribution of Antarctic sea ice (1988 - 2017)
Terrestrial, Atmospheric and Oceanic Sciences, 2021 In this study, we used daily sea-ice concentration data from the National Snow and Ice Data Center from 1988 to 2017 to investigate the spatial distribution of Antarctic sea ice by calculating the annual mean sea-ice concentration and multi-year sea ice ...
Xingdong Wang, Shuhui Yang, Zhankai Wu
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Arctic and Antarctic Sea Ice Change: Contrasts, Commonalities, and Causes.
Annual Review of Marine Science, 2019 Arctic sea ice has declined precipitously in both extent and thickness over the past four decades; by contrast, Antarctic sea ice has shown little overall change, but this masks large regional variability.
T. Maksym
semanticscholar +1 more source
Limnology and Oceanography Letters, EarlyView.Abstract Ocean color‐based estimates of Antarctic net primary productivity (NPP) have indicated low nearshore productivity in ice‐adjacent waters, contrasting with coupled physical–biogeochemical models. To understand this discrepancy, we assessed satellite records of polynya NPP by comparing field data with two satellite imagery datasets derived using
Hilde Oliver +4 more
wiley +1 more source
Proceedings, 2023 The Southern Ocean waters exchange freshwater, nutrients, carbon, heat, and salt to the Equator and influence the global carbon budget. Therefore, it is essential to understand the variations in Southern Ocean circulation during the last deglacial period
Gagan Mandal, Shih-Yu Lee, Jia-Yuh Yu
doaj +1 more source