Results 31 to 40 of about 794,859 (161)

ICE Concentration Linked with Extractive Stirrer (ICECLES) [PDF]

open access: yesAnalytica Chimica Acta, 2016
Trace and ultra-trace analysis can be difficult to achieve, especially for polar, more volatile, and/or thermally unstable analytes. A novel technique, coined ICE Concentration Linked with Extractive Stirrer (ICECLES), may help address this problem. The implementation of ICECLES described here combines stir bar sorptive extraction (SBSE) with freeze ...
Nujud Maslamani   +3 more
openaire   +3 more sources

Better constraints on the sea-ice state using global sea-ice data assimilation [PDF]

open access: yesGeoscientific Model Development, 2012
Short-term and decadal sea-ice prediction systems need a realistic initial state, generally obtained using ice–ocean model simulations with data assimilation. However, only sea-ice concentration and velocity data are currently assimilated.
P. Mathiot   +5 more
doaj   +1 more source

Contrail radiative dependence on ice particle number concentration

open access: yesEnvironmental Research: Climate, 2023
Abstract Recent studies on low aromatic fuels have shown that lower soot number emissions may reduce contrail ice particle number concentrations (N ice). Here we implemented, in a sophisticated radiative transfer model, two ice particle size distribution schemes in order to estimate the contrail radiative forcing’s (RFs)
Rubén Rodríguez De León, David S Lee
openaire   +3 more sources

Accuracy of Sea Ice Data from Remote Sensing Methods, its Impact on Safe Speed Determination and Planning of Voyage in Ice-Covered Areas [PDF]

open access: yesTransNav, 2016
The data related to ice floe concentration and ice thickness were analysed. Sources of data have been verified by visual observation and by comparison in between information from different remote sensing sources. The results of this work exceeded initial
Tadeusz Pastusiak
doaj   +1 more source

Spatial-temporal variations of one-year ice in Antarctic different regions, 1988–2020

open access: yesEcological Indicators, 2023
In order to increase the comparability of Antarctic sea ice changes, we proposed a new method to quantitatively assess the spatial–temporal variation characteristics of Antarctic one-year ice based on daily Antarctic sea ice concentration data provided ...
Xingdong Wang, Hailong Zhou, Mingzhu Ji
doaj   +1 more source

Ice conditions of navigation in the Arctic basin in summer 2018 (en)

open access: yesРоссийская Арктика, 2018
The paper presents preliminary results of data processing of special ship observations of ice cover in the Arctic Basin between Franz Josef Land and the North Pole in summer 2018.
Alekseeva T.A.   +3 more
doaj   +1 more source

Assimilation of ice and water observations from SAR imagery to improve estimates of sea ice concentration [PDF]

open access: yesTellus: 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

New methodology to estimate Arctic sea ice concentration from SMOS combining brightness temperature differences in a maximum-likelihood estimator [PDF]

open access: yesThe 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

The Migration Pattern of Atrazine during the Processes of Water Freezing and Thawing

open access: yesToxics, 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

Impact of assimilating sea ice concentration, sea ice thickness and snow depth in a coupled ocean–sea ice modelling system [PDF]

open access: yesThe 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

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