Results 51 to 60 of about 283,051 (325)

Improved simulation of Antarctic sea ice due to the radiative effects of falling snow [PDF]

, 2017
Southern Ocean sea-ice cover exerts critical control on local albedo and Antarctic precipitation, but simulated Antarctic sea-ice concentration commonly disagrees with observations.
Boucher O, Eric Fetzer, Graeme Stephens, Holland M M, IPCC ed Stocker T F, J-L F Li, Jia-Yuh Yu, Mark Richardson, Neale R B, Rhein M, Wei-Liang Lee, Yi-Hui Wang, Yinghui Liu, Yulan Hong   +13 more
core   +1 more source

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

The 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, A. A. Petty, J. C. Stroeve, J. C. Stroeve, P. R. Holland, L. N. Boisvert, L. N. Boisvert, A. C. Bliss, A. C. Bliss, N. Kimura, W. N. Meier   +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

Journal 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, Min Ji, Fengxiang Jin, Ying Li, Yawen He, Ting Li   +5 more
doaj   +1 more source

Super Resolution of Arctic Sea Ice Concentration

, 2021
Arctic sea ice concentration is often coarsely observed and numerically computed despite its importance for polar climate system. In this work we present three machine-learning methods to recover the original high-resolution images from the coarse-grained low-resolution counterparts.
Zhai, Jun, Bitz, Cecilia M.
openaire   +2 more sources

Simulated Geophysical Noise in Sea Ice Concentration Estimates of Open Water and Snow-Covered Sea Ice

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Sea ice concentration algorithms using brightness temperatures ($T_{B}$) from satellite microwave radiometers are used to compute sea ice concentration ($c_{\text{ice}}$), sea ice extent, and generate sea ice climate data records. Therefore, it is important to minimize the sensitivity of $c_{\text{ice}}$ estimates to geophysical noise caused by snow ...
Rasmus T. Tonboe, Vishnu Nandan, Marko Makynen, Leif Toudal Pedersen, Stefan Kern, Thomas Lavergne, Johanne Oelund, Gorm Dybkjaer, Roberto Saldo, Marcus Huntemann   +9 more
openaire   +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   +1 more source

Navigability of the Northern Sea Route for Arc7 ice-class vessels during winter and spring sea-ice conditions

Advances in Climate Change Research, 2022
Sea ice hinders the navigability of the Arctic, especially in winter and spring. However, three Arc7 ice-class Liquefied Natural Gas carrying vessels safely transited the Northern Sea Route (NSR) without icebreaker assistance in January 2021.
Shi-Yi CHEN, Stefan Kern, Xin-Qing LI, Feng-Ming HUI, Yu-Fang YE, Xiao Cheng   +5 more
doaj   +1 more source

The Identification of Ice Floes and Calculation of Sea Ice Concentration Based on a Deep Learning Method

Remote Sensing, 2023
When navigating ships in cold regions, sea ice concentration plays a crucial role in determining a ship’s navigability. However, automatically extracting the sea ice concentration and floe size distribution remains challenging, due to the difficulty in ...
Li Zhou, Jinyan Cai, Shifeng Ding
doaj   +1 more source

Loss of sea ice during winter north of Svalbard [PDF]

, 2014
Sea ice loss in the Arctic Ocean has up to now been strongest during summer. In contrast, the sea ice concentration north of Svalbard has experienced a larger decline during winter since 1979. The trend in winter ice area loss is close to 10% per decade,
Aagaard K., Alexeev V. A., Beszczynska-Möller A., Cokelet E., Comiso J. C, Dee D. P., Frank Nilsen, Førland E. J., Førland E. J., Grotefendt K., Hansen E., Ingrid H. Onarheim, Ivanov V. V., Lars H. Smedsrud, Lind S., Piechura J., Polyakov I. V., Polyakov I. V., Quenouille M. H, Rainville L., Randi B. Ingvaldsen, Rudels B, Rudels B, Saloranta T. M., Sandø A. B., Schauer U., Sirevaag A., Smedsrud L. H., Untersteiner N, Årthun M.   +29 more
core   +1 more source

Erroneous sea-ice concentration retrieval in the East Antarctic [PDF]

Annals of Glaciology, 2018
ABSTRACTLarge discrepancies have been observed between satellite-derived sea-ice concentrations(IC) from passive microwave remote sensing and those derived from optical images at several locations in the East Antarctic, between February and April 2014. These artefacts, that resemble polynyas in the IC maps, appear in areas where optical satellite data ...
Gunnar Spreen, Christian Melsheimer, Hoi Ming Lam, Georg Heygster, Neal Young   +4 more
openaire   +3 more sources