Results 21 to 30 of about 294,753 (307)

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

Ecological 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

Prediction of monthly Arctic sea ice concentrations using satellite and reanalysis data based on convolutional neural networks [PDF]

, 2020
Changes in Arctic sea ice affect atmospheric circulation, ocean current, and polar ecosystems. There have been unprecedented decreases in the amount of Arctic sea ice due to global warming.
Han, Daehyeon, Im, Jungho, Kim, Hyun-Cheol, Kim, Young Jun, Lee, Sanggyun   +4 more
core   +1 more source

The 2018 North Greenland polynya observed by a newly introduced merged optical and passive microwave sea-ice concentration dataset [PDF]

The Cryosphere, 2019
Observations of sea-ice concentration are available from satellites year-round and almost weather-independently using passive microwave radiometers at resolutions down to 5 km.
V. Ludwig, G. Spreen, C. Haas, C. Haas, L. Istomina, F. Kauker, F. Kauker, D. Murashkin   +7 more
doaj   +1 more source

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   +1 more source

Impurity Concentrations In Sea Ice [PDF]

Journal of Glaciology, 1977
AbstractThree different types of saline ice were cut into sections a few millimeters thick along planes parallel to the surface. The resulting melts were analyzed quantitatively for chloride, sulphate, sodium, potassium, magnesium, and calcium. Two of the specimens were artificial sea ice, grown in the laboratory at ambient temperatures of —30°C and ...
openaire   +1 more source

The impact of a seasonally ice free Arctic Ocean on the temperature, precipitation and surface mass balance of Svalbard [PDF]

, 2012
The observed decline in summer sea ice extent since the 1970s is predicted to continue until the Arctic Ocean is seasonally ice free during the 21st Century. This will lead to a much perturbed Arctic climate with large changes in ocean surface energy flux.
Bamber, Jonathan L, Day, Jonathan J, Kohler, Jack, Valdes, Paul J   +3 more
core   +2 more sources

Consistent biases in Antarctic sea ice concentration simulated by climate models [PDF]

The Cryosphere, 2018
The simulation of Antarctic sea ice in global climate models often does not agree with observations. In this study, we examine the compactness of sea ice, as well as the regional distribution of sea ice concentration, in climate models from the latest
L. A. Roach, L. A. Roach, S. M. Dean, J. A. Renwick   +3 more
doaj   +1 more source

Relationship between sea ice concentration and sea ice albedo over Antarctica

Korean Journal of Remote Sensing, 2015
Abstract : Sea ice is a key parameter for understanding the climate change in cryosphere. In this study,we investigated the correlation with the factors that influenced change of the sea ice extent. We used the SeaIce Concentration (SIC) from Ocean and Sea Ice Satellite Application Facility (OSI-SAF), and surface albedoprovided by The Satellite ...
Minji Seo, Chang Suk Lee, Hyunji Kim, Morang Huh, Kyung-Soo Han   +4 more
openaire   +2 more sources

Respective impacts of Arctic sea ice decline and increasing greenhouse gases concentration on Sahel precipitation [PDF]

, 2019
The impact of climate change on Sahel precipitation is uncertain and has to be widely documented. Recently, it has been shown that Arctic sea ice loss leverages the global warming effects worldwide, suggesting a potential impact of Arctic sea ice decline
A Kitoh, A Seth, A Voldoire, AR Stine, AT Evan, B Fontaine, B Luo, B Pu, C Deser, C Deser, C Lavaysse, C Lavaysse, CB Skinner, CD Thorncroft, CD Thorncroft, D Luo, D Salas Mélia, DM Smith, DP Rowell, E Hawkins, E Mohino, E Sanchez-Gomez, Emilia Sanchez-Gomez, ER Martin, F Massonnet, G Magnusdottir, G Wang, HT Hewitt, I Polo, I Simmonds, J Noilhan, J Noilhan, J Villamayor, J-Y Lee, JA Screen, JA Screen, JC Stroeve, JCH Chiang, JG Dwyer, JG Dwyer, JP Grist, JR Knight, KE McCusker, KE Taylor, KE Trenberth, KE Trenberth, KH Cook, LM Druyan, M Biasutti, M Biasutti, M Gaetani, M Ting, MC Serreze, ME Mann, ME Mann, MI Lélé, P Peyrillé, P-A Monerie, P-A Monerie, P-A Monerie, P-A Monerie, Paul-Arthur Monerie, R Blackport, R James, R Roehrig, R Seager, R Zhang, RJ Haarsma, S Talento, SE Nicholson, SM Kang, Thomas Oudar, Y Liu, Y Peings   +73 more
core   +1 more source

Spatial Correlation Length Scales of Sea-Ice Concentration Errors for High-Concentration Pack Ice [PDF]

Remote Sensing, 2021
The European Organisation for the Exploitation of Meteorological Satellites-Ocean and Sea Ice Satellite Application Facility–European Space Agency-Climate Change Initiative (EUMETSAT-OSISAF–ESA-CCI) Level-4 sea-ice concentration (SIC) climate data records (CDRs), named SICCI-25km, SICCI-50km and OSI-450, provide gridded SIC error estimates in addition ...
openaire   +2 more sources