Results 1 to 10 of about 4,455,689 (243)

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, R. Graversen, K. H. Christensen, P. Rostosky, K. Wang   +4 more
doaj   +7 more sources

Improving Multiyear Sea Ice Concentration Estimates with Sea Ice Drift [PDF]

Remote Sensing, 2016
Multiyear ice (MYI) concentration can be retrieved from passive or active microwave remote sensing observations. One of the algorithms that combines both observations is the Environmental Canada Ice Concentration Extractor (ECICE).
Yufang Ye, Mohammed Shokr, Georg Heygster, Gunnar Spreen   +3 more
doaj   +4 more sources

Accounting for Label Errors When Training a Convolutional Neural Network to Estimate Sea Ice Concentration Using Operational Ice Charts

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Convolutional neural networks (CNNs) are being increasingly investigated as a means to extract sea ice concentration from synthetic aperture radar (SAR) in an automated manner. This is often done using ice charts as training data.
Manveer Singh Tamber, K. Andrea Scott, Leif Toudal Pedersen   +2 more
doaj   +3 more sources

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

Remote 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, Sungwook Hong, Jaeil Cho, Yang-Won Lee, Hosang Lee   +4 more
doaj   +3 more sources

Sea ice concentration estimates from ICESat-2 linear ice fraction – Part 1: Multi-sensor comparison of sea ice concentration products [PDF]

The Cryosphere
Sea ice coverage is a key indicator of changes in polar and global climate. Observational estimates of the area and extent of sea ice are primarily derived from passive microwave surface emissions, which are used to develop gridded products of sea ice ...
E. M. Buckley, C. Horvat, P. Yoosiri
doaj   +3 more sources

Sea ice concentration inversion based on different Arctic sea ice types

Frontiers in Marine Science
The ASI algorithm uses the same sea ice and seawater tie-points when inverting polar sea ice concentration (SIC), but this approach does not fully consider the differences between different polar sea regions and the impact of different sea ice ...
Xingdong Wang, Zehao Sun, Zhi Guo, Yanchuang Zhao, Yuhua Wang   +4 more
doaj   +2 more sources

Improvement of Arctic Sea Ice Multi-Parameter Assimilation on Sea Ice Concentration Simulation

Haiyang Kaifa yu guanli
Based on the CICE sea ice model and the PDAF parallel data assimilation framework, this paper uses the local error subspace transform Kalman filter method (LESTKF) to assimilate the sea ice concentration, sea ice thickness and sea ice freeboard data into
ZHANG Sihan, ZHAO Jiechen, ZOU Wenfeng, WU Jie, WANG Yingzheng, CHEN Ziyi, ZHAO Dinglong, MU Fangru   +7 more
doaj   +1 more source

DETAILED VALIDATION OF AMSR2 SEA ICE CONCENTRATION DATA USING MODIS DATA IN THE SEA OF OKHOTSK [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Global warming is one of the most serious problems we are facing in the 21st Century. Sea ice has an important role of reflecting the solar radiation back into space.
K. Cho, K. Naoki, J. Comiso
doaj   +1 more source

Arctic sea ice variation in the Northwest Passage in 1979–2017 and its response to surface thermodynamics factors

Advances in Climate Change Research, 2021
Sea ice conditions in the Canadian Arctic Archipelago (CAA) play a key role in the navigation of the Northwest Passage (NWP). Limited by observed sea ice thickness data, the research of temporal and spatial variation of sea ice in the NWP is insufficient.
Xin-Yi Shen, Yu Zhang, Chang-Sheng Chen, Song Hu, Dan-Ya Xu, Wei-Zeng Shao, Liang Chang, Gui-Ping Feng   +7 more
doaj   +1 more source

Ice sheet extent and early deglacial history of the southwestern sector of the Greenland ice sheet [PDF]

, 2009
The offshore and coastal geomorphology of southwest Greenland records evidence for the advance and decay of the Greenland Ice Sheet during the Last Glacial Maximum.
Long, A.J., Xu, S., Schnabel, C., Simpson, M.J.R., Huybrechts, P., Roberts, D.H., Davies, B.J.   +6 more
core   +9 more sources