Results 41 to 50 of about 294,753 (307)

On the assimilation of ice velocity and concentration data into large-scale sea ice models [PDF]

open access: yes, 2007
Data assimilation into sea ice models designed for climate studies has started about 15 years ago. In most of the studies conducted so far, it is assumed that the improvement brought by the assimilation is straightforward.
T. Fichefet, V. Dulière
core   +3 more sources

Unexpectedly high ultrafine aerosol concentrations above East Antarctic sea-ice [PDF]

open access: yesAtmospheric Chemistry and Physics, 2015
Abstract. The effect of aerosols on clouds and their radiative properties is one of the largest uncertainties in our understanding of radiative forcing. A recent study has concluded that better characterisation of pristine, natural aerosol processes leads to the largest reduction in these uncertainties.
R. S. Humphries   +8 more
openaire   +4 more sources

Machine Learning-Based Image Processing for Ice Concentration during Chukchi and Beaufort Sea Trials

open access: yesJournal of Marine Science and Engineering, 2023
Growing interest in finding the optimal route through the arctic ocean, and sea ice concentration is also emerging as a factor to be considered. In this paper, an algorithm to calculate the sea ice concentration was developed based on the images taken ...
Huichan Kim   +2 more
doaj   +1 more source

On the measure of sea ice area from sea ice concentration data sets

open access: yesSPIE Proceedings, 2015
The measure of sea ice surface variability provides a fundamental information on the climatology of the Arctic region. Sea ice extension is conventionally measured by two parameters, i.e. Sea Ice Extent (SIE) and Sea Ice Area (SIA), both parameters being derived from Sea Ice Concentration (SIC) data sets.
BOCCOLARI, Mauro, Parmiggiani, Flavio
openaire   +1 more source

Arctic Sea Ice Concentration Assimilation in an Operational Global 1/10° Ocean Forecast System

open access: yesRemote Sensing, 2023
To understand the Arctic environment, which is closely related to sea ice and to reduce potential risks, reliable sea ice forecasts are indispensable. A practical, lightweight yet effective assimilation scheme of sea ice concentration based on Optimal ...
Qiuli Shao   +5 more
doaj   +1 more source

Statistical Modeling of Sea Ice Concentration Using Satellite Imagery and Climate Reanalysis Data in the Barents and Kara Seas, 1979–2012

open access: yesRemote Sensing, 2014
Extensive sea ice over Arctic regions is largely involved in heat, moisture, and momentum exchanges between the atmosphere and ocean. Some previous studies have been conducted to develop statistical models for the status of Arctic sea ice and showed ...
Jihye Ahn   +4 more
doaj   +1 more source

Direct determination of the air-sea CO₂ gas transfer velocity in Arctic sea-ice regions [PDF]

open access: yes, 2017
The Arctic Ocean is an important sink for atmospheric CO₂. The impact of decreasing sea-ice extent and expanding marginal ice zones on Arctic air-sea CO₂ exchange depends on the rate of gas transfer in the presence of sea ice.
Anderson, LG   +8 more
core   +1 more source

The Arctic sea ice cover of 2016: a year of record-low highs and higher-than-expected lows [PDF]

open access: yesThe Cryosphere, 2018
The Arctic sea ice cover of 2016 was highly noteworthy, as it featured record low monthly sea ice extents at the start of the year but a summer (September) extent that was higher than expected by most seasonal forecasts.
A. A. Petty   +10 more
doaj   +1 more source

Analysis of the Spatial and Temporal Variation of Sea Ice and Connectivity in the NEP of the Arctic in Summer in Hot Years

open access: yesJournal of Marine Science and Engineering, 2021
Climate warming has enabled the Arctic region to achieve seasonal navigation, and sea ice concentration is an important factor affecting the navigation of the Arctic waterways.
Guochong Liu   +5 more
doaj   +1 more source

The seasonality of Antarctic sea ice trends [PDF]

open access: yes, 2014
Antarctic sea ice is experiencing a weak overall increase in area that is the residual of opposing regional trends. This study considers their seasonal pattern.
Holland, Paul R.
core   +1 more source

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