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Iceberg drift and decay and the associated freshwater release are increasingly seen as important processes in Earth's climate system, yet a detailed understanding of their dynamics has remained elusive. Here, an idealized model of iceberg…

大气与海洋物理 · 物理学 2017-08-02 Till J. W. Wagner , Rebecca W. Dell , Ian Eisenman

Wave-sea ice interactions shape the transition zone between open ocean and pack ice in the polar regions. Most theoretical paradigms, implemented in coupled wave-sea ice models, predict exponential decay of the wave energy but some recent…

大气与海洋物理 · 物理学 2026-03-09 Rhys Ransome , Davide Proment , Ian A. Renfrew , Alberto Alberello

Sea ice plays an important role in stabilising the Earth system. Yet, representing its dynamics remains a major challenge for models, as the underlying processes are scale-invariant and highly anisotropic. This poses a dilemma:…

Variability in sea ice conditions, combined with strong couplings to the atmosphere and the ocean, lead to a broad range of complex sea ice dynamics. More in-situ measurements are needed to better identify the phenomena and mechanisms that…

We characterize the complete joint posterior distribution over spatially-varying basal traction and and ice softness parameters of an ice sheet model from observations of surface speed by using stochastic variational inference combined with…

计算物理 · 物理学 2022-04-13 Douglas J. Brinkerhoff

Numerical climate models are used to project future climate change due to both anthropogenic and natural causes. Differences between projections from different climate models are a major source of uncertainty about future climate. Emergent…

应用统计 · 统计学 2020-02-06 Philip G. Sansom , David B. Stephenson , Thomas J. Bracegirdle

The Earth's climate is rapidly changing and some of the most drastic changes can be seen in the Arctic, where sea ice extent has diminished considerably in recent years. As the Arctic climate continues to change, gathering in situ sea ice…

计算工程、金融与科学 · 计算机科学 2021-04-07 Matthew Parno , Taylor Hodgdon , Brendan West , Devin O'Connor , Arnold Song

The velocity field and the height at the surface of a dynamic ice sheet are observed. The ice sheets are modeled by the full Stokes equations and shallow shelf/shelfy stream approximations. Time dependence is introduced by a kinematic free…

计算物理 · 物理学 2020-01-27 Gong Cheng , Per Lötstedt

The transport of sea ice over the polar oceans plays an important role in climate. This transport is driven predominantly by turbulent winds, leading to stochastic motion of ice floes. Observed diffusivities and velocity distributions of…

地球物理 · 物理学 2025-02-26 Bryan Shaddy , P. Alex Greaney , Bhargav Rallabandi

Arctic amplification has altered the climate patterns both regionally and globally, resulting in more frequent and more intense extreme weather events in the past few decades. The essential part of Arctic amplification is the unprecedented…

大气与海洋物理 · 物理学 2023-08-10 Sahara Ali , Jianwu Wang

Continuous observation of climate indicators, such as trends in lake freezing, is important to understand the dynamics of the local and global climate system. Consequently, lake ice has been included among the Essential Climate Variables…

计算机视觉与模式识别 · 计算机科学 2020-10-28 Manu Tom , Rajanie Prabha , Tianyu Wu , Emmanuel Baltsavias , Laura Leal-Taixe , Konrad Schindler

Arctic sea ice plays a critical role in regulating Earth's climate system, significantly influencing polar ecological stability and human activities in coastal regions. Recent advances in artificial intelligence have facilitated the…

机器学习 · 计算机科学 2026-02-04 Jingyi Xu , Shengnan Wang , Weidong Yang , Siwei Tu , Lei Bai , Ben Fei

Sea-Ice drift affects various global processes including the air-sea-ice energy system, numerical ocean modelling, and maritime activity in the polar regions. Drift has been investigated via various technologies ranging from satellite based…

信号处理 · 电气工程与系统科学 2023-07-21 James H. Hepworth , Amit Kumar Mishra

Sea ice motions play an important role in the polar climate system by transporting pollutants, heat, water and salt as well as changing the ice cover. Numerous physics-based models have been constructed to represent the sea ice dynamical…

大气与海洋物理 · 物理学 2021-08-26 Jun Zhai , Cecilia M. Bitz

In recent decades, climate change has significantly affected glacier dynamics, resulting in mass loss and an increased risk of glacier-related hazards including supraglacial and proglacial lake development, as well as catastrophic outburst…

图像与视频处理 · 电气工程与系统科学 2022-08-02 Zhiyuan Xie , Umesh K. Haritashya , Vijayan K. Asari , Michael P. Bishop , Jeffrey S. Kargel , Theus H. Aspiras

Sea ice is a key component of the Earth's climate system, making its aging process an essential focus of current research. The age of sea ice is closely linked to its thermal and mechanical properties, which govern its interactions with the…

流体动力学 · 物理学 2025-09-09 Yihong Du , Feng Wang , Enrico Calzavarini , Chao Sun

The issue of ice accumulation at low-temperature circumstances causes multiple problems and serious damages in many civil infrastructures which substantially influence human daily life. However, despite the significant consideration in…

化学物理 · 物理学 2020-11-24 Amir Afshar , Dong Meng

We study the seasonal changes in the thickness distribution of Arctic sea ice, $g(h)$, under climate forcing. Our analytical and numerical approach is based on a Fokker-Planck equation for $g(h)$ (Toppaladoddi \& Wettlaufer \emph{Phys. Rev.…

大气与海洋物理 · 物理学 2016-12-26 Srikanth Toppaladoddi , John S. Wettlaufer

The persistent lack of spatially complete Antarctic sea ice thickness (SIT) data at sub-monthly resolution has fundamentally constrained the quantitative understanding of large-scale sea ice mass balance processes. In this study, a…

地球物理 · 物理学 2025-05-13 Ziqi Ma , Qinghua Yang , Yue Xu , Wen Shi , Xiaoran Dong , Qian Shi , Hao Luo , Jiping Liu , Petteri Uotila , Yafei Nie

We present a new approach to modeling the future development of extreme temperatures globally and on a long time-scale by using non-stationary generalized extreme value distributions in combination with logistic functions. This approach is…

大气与海洋物理 · 物理学 2022-07-28 Justus Contzen , Thorsten Dickhaus , Gerrit Lohmann