Assimilation of ice and water observations from SAR imagery to improve estimates of sea ice concentration [PDF]
Tellus: Series A, Dynamic Meteorology and Oceanography, 2015 In this paper, the assimilation of binary observations calculated from synthetic aperture radar (SAR) images of sea ice is investigated. Ice and water observations are obtained from a set of SAR images by thresholding ice and water probabilities ...
K. Andrea Scott +4 more
doaj +1 more source
Ice condensation as a planet formation mechanism [PDF]
, 2013 We show that condensation is an efficient particle growth mechanism, leading to growth beyond decimeter-sized pebbles close to an ice line in protoplanetary discs. As coagulation of dust particles is frustrated by bouncing and fragmentation, condensation
Johansen, Anders, Ros, Katrin
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Ice Initiation by Aerosol Particles: Measured and Predicted Ice Nuclei Concentrations versus Measured Ice Crystal Concentrations in an Orographic Wave Cloud [PDF]
Journal of the Atmospheric Sciences, 2010 Abstract The initiation of ice in an isolated orographic wave cloud was compared with expectations based on ice nucleating aerosol concentrations and with predictions from new ice nucleation parameterizations applied in a cloud parcel model.
Eidhammer, T. +14 more
openaire +2 more sources
New methodology to estimate Arctic sea ice concentration from SMOS combining brightness temperature differences in a maximum-likelihood estimator [PDF]
The Cryosphere, 2017 Monitoring sea ice concentration is required for operational and climate studies in the Arctic Sea. Technologies used so far for estimating sea ice concentration have some limitations, for instance the impact of the atmosphere, the physical ...
C. Gabarro +5 more
doaj +1 more source
Molecular-dynamics simulation of clustering processes in sea-ice floes
, 2011 In seasonally ice-covered seas and along the margins of perennial ice pack, i.e. in regions with medium ice concentrations, the ice cover typically consists of separate floes interacting with each other by inelastic collisions.
Herman, Agnieszka
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Quantifying fusion born ion populations in magnetically confined plasmas using ion cyclotron emission [PDF]
, 2016 Ion cyclotron emission (ICE) offers unique promise as a diagnostic of the fusion born alpha-particle population in magnetically confined plasmas. Pioneering observations from JET and TFTR found that ICE intensity $P_{ICE}$ scales approximately linearly ...
Carbajal, L. +3 more
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Impact of assimilating sea ice concentration, sea ice thickness and snow depth in a coupled ocean–sea ice modelling system [PDF]
The Cryosphere, 2019 The accuracy of the initial state is very important for the quality of a forecast, and data assimilation is crucial for obtaining the best-possible initial state.
S. Fritzner +4 more
doaj +1 more source
The Migration Pattern of Atrazine during the Processes of Water Freezing and Thawing
Toxics, 2022 Atrazine, one of the most commonly used herbicides in the world, is of concern because of its frequent occurrence in various water bodies and the potential threat it constitutes to ecosystems. The transport of contaminants in seasonally ice-covered lakes
Yan Zhang +5 more
doaj +1 more source
Optical Properties of Deep Ice at the South Pole - Absorption [PDF]
, 1997 We discuss recent measurements of the wavelength-dependent absorption coefficients in deep South Pole ice. The method uses transit time distributions of pulses from a variable-frequency laser sent between emitters and receivers embedded in the ice.
AMANDA Collaboration +36 more
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Dynamical mechanism of antifreeze proteins to prevent ice growth
, 2014 The fascinating ability of algae, insects and fishes to survive at temperatures below normal freezing is realized by antifreeze proteins (AFPs). These are surface-active molecules and interact with the diffusive water/ice interface thus preventing ...
Kutschan, B., Morawetz, K., Thoms, S.
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