Results 41 to 50 of about 2,565,243 (371)

Wave–sea-ice interactions in a brittle rheological framework [PDF]

open access: yesThe Cryosphere, 2021
As sea ice extent decreases in the Arctic, surface ocean waves have more time and space to develop and grow, exposing the marginal ice zone (MIZ) to more frequent and more energetic wave events.
G. Boutin   +5 more
doaj   +1 more source

In situ primary production in young Antarctic sea ice [PDF]

open access: yes, 2002
An in situ incubation technique used successfully to measure the photosynthetic carbon assimilation of internal algal assemblages within thick multiyear Arctic sea ice was developed and improved to measure the photosynthetic carbon assimilation within ...
Mock, Thomas
core   +1 more source

Arctic amplification is caused by sea-ice loss under increasing CO2

open access: yesNature Communications, 2019
Warming in the Arctic has been much faster than the rest of the world in both observations and model simulations, a phenomenon known as the Arctic amplification (AA) whose cause is still under debate. By analyzing data and model simulations, here we show
A. Dai, D. Luo, M. Song, Jiping Liu
semanticscholar   +2 more sources

An enhancement to sea ice motion and age products at the National Snow and Ice Data Center (NSIDC)

open access: yes, 2020
. A new version of sea ice motion and age products includes several significant upgrades in processing, corrects known issues with the previous version, and updates the time series through 2018, with regular updates planned for the future.
M. Tschudi, W. Meier, J. Stewart
semanticscholar   +1 more source

Resolutional Analysis of Multiplicative High-Frequency Speckle Noise Based on SAR Spatial De-Speckling Filter Implementation and Selection

open access: yesRemote 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

Formation and propagation of great salinity anomalies [PDF]

open access: yes, 2003
North Atlantic/Arctic ocean and sea ice variability for the period 1948–2001 is studied using a global Ocean General Circulation Model coupled to a dynamic/thermodynamic sea ice model forced by daily NCEP/NCAR reanalysis data [Kalnay et al., 1996 ...
Aagaard   +18 more
core   +1 more source

The ECMWF operational ensemble reanalysis–analysis system for ocean and sea ice: a description of the system and assessment

open access: yesOcean 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

A Feasibility Study of Sea Ice Motion and Deformation Measurements Using Multi-Sensor High-Resolution Optical Satellite Images

open access: yesRemote 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

Antarctic sea ice over the past 130 000 years – Part 1: a review of what proxy records tell us [PDF]

open access: yesClimate of the Past, 2022
Antarctic sea ice plays a critical role in the Earth system, influencing energy, heat and freshwater fluxes, air–sea gas exchange, ice shelf dynamics, ocean circulation, nutrient cycling, marine productivity and global carbon cycling.
X. Crosta   +37 more
doaj   +1 more source

Sea Ice Roughness Overlooked as a Key Source of Uncertainty in CryoSat‐2 Ice Freeboard Retrievals

open access: yesJournal of Geophysical Research: Oceans, 2020
ESA's CryoSat‐2 has transformed the way we monitor Arctic sea ice, providing routine measurements of the ice thickness with near basin‐wide coverage.
J. Landy   +3 more
semanticscholar   +1 more source

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