Results 61 to 70 of about 2,485,692 (404)
Assimilation of sea ice motion in a finite‐element sea ice model [PDF]
Journal of Geophysical Research: Oceans, 2009 A finite‐element sea ice model (FESIM) is applied in a data assimilation study with the singular evolutive interpolated Kalman (SEIK) filter. The model has been configured for a regional Arctic domain and is forced with a combination of daily NCEP reanalysis data for 2‐m air temperature and 10‐m winds with monthly mean humidities from the ECMWF ...
Rollenhagen, Katja +4 more
openaire +4 more sources
Ocean Science (OS), 2019 . The ECMWF OCEAN5 system is a global ocean and sea-ice ensemble of reanalysis and real-time analysis. This paper gives a full description of the OCEAN5 system, with the focus on upgrades of system components with respect to its predecessors, ORAS4 and ...
H. Zuo +4 more
semanticscholar +1 more source
Factors controlling the bifurcation structure of sea ice retreat [PDF]
, 2012 The contrast in surface albedo between sea ice and open ocean suggests the possibility of an unstable climate state flanked by two separate stable climate states. Previous studies using idealized single-column models and comprehensive climate models have
Eisenman, Ian
core +1 more source
Sea Ice Elevation in the Western Weddell Sea, Antarctica: Observations From Field Campaign
Earth and Space Science, 2022 Sea ice elevation is crucial in the characterization of three‐dimensional (3D) sea ice patterns, providing physical insights to advance sea ice dynamic models. Moreover, how sea ice elevation may be related to the ocean geophysical environment is still a
Lanqing Huang +2 more
doaj +1 more source
Remote Sensing, 2019 Due to the inherent characteristics of the electromagnetic wave scattering phenomenon, synthetic aperture radar (SAR) images are directly degraded by high-frequency multiplicative speckle (HMS) noise, which makes image de-speckling filter application and
Iman Heidarpour Shahrezaei +1 more
doaj +1 more source
Effect of Sea-ice Drift on the Onset of Snowball Climate on Rapidly Rotating Aqua-planets [PDF]
, 2020 Previous studies have shown that sea-ice drift effectively promote the onset of a globally ice-covered snowball climate for paleo Earth and for tidally locked planets around low-mass stars. Here, we investigate whether sea-ice drift can influence the stellar flux threshold for a snowball climate onset on rapidly rotating aqua-planets around a Sun-like ...
arxiv +1 more source
Remote Sensing, 2017 Sea ice motion and deformation have generally been measured using low-resolution passive microwave or mid-resolution radar remote sensing datasets of daily (or few days) intervals to monitor long-term trends over a wide polar area. This feasibility study
Chang-Uk Hyun, Hyun-cheol Kim
doaj +1 more source
The Sensitivity of Sea Ice Brine Fraction to the Freezing Temperature and Orientation [PDF]
arXiv, 2023 Pound for pound, sea ice is the most important component of Earth's climate system. The changing conditions in which sea ice forms and exists are likely to affect the properties of sea ice itself, and potential climate feedbacks need to be identified and understood to improve future projections.
arxiv
Sea ice deformation and sea ice thickness change
, 2022 The Arctic Ocean is undergoing a major transition from a year-round sea ice cover to ice-free summers with global consequences. Sea ice thickness is at the center of the ongoing changes because the thickness regulates key processes of the Arctic climate system and in the last six decades, the mean thickness has more than halved.
openaire +2 more sources
In Situ Experimental Study of the Friction of Sea Ice and Steel on Sea Ice [PDF]
Applied Sciences, 2018 The kinetic coefficient of friction μk was measured for sea ice, stainless steel, and coated steel sliding on a natural sea ice cover. The effects of normal stress (3.10–8.11 kPa), ice columnar grain orientation (vertical and parallel to the sliding direction), sliding velocity (0.02–2.97 m·s–1), and contact material were investigated.
Wang, Qingkai +4 more
openaire +4 more sources