Results 41 to 50 of about 2,824,835 (249)

ICESat measurements of sea ice freeboard and estimates of sea ice thickness in the Weddell Sea [PDF]

Journal of Geophysical Research: Oceans, 2008
Sea ice freeboard heights in the Weddell Sea of Antarctica are derived from the Ice, Cloud, and Land Elevation Satellite (ICESat) laser altimeter measurements, which have a unique range precision to flat surfaces of 2 cm within 70 m footprints spaced at 172 m along track. Although elevations of flat surfaces can be obtained to an accuracy of ∼10 cm (1σ)
H. Jay Zwally, Donghui Yi, Ron Kwok, Yunhe Zhao   +3 more
openaire   +1 more source

Can uncertainties in sea ice albedo reconcile patterns of data-model discord for the Pliocene and 20th/21st centuries? [PDF]

, 2014
General Circulation Model simulations of the mid-Pliocene warm period (mPWP, 3.264 to 3.025 Myr ago) currently underestimate the level of warming that proxy data suggest existed at high latitudes, with discrepancies of up to 11°C for sea surface ...
Haywood, Alan, Wade, Bridget, Francis, JE, Francis, Jane, Wade, Bridget S., Hill, Daniel J., Hill, DJ, Haywood, Alan M., Dowsett, Harry, Pope, James O., Howell, Fergus, Pope, James, Pickering, Steven, Howell, FW, Dowsett, Harry J., Pickering, SJ, Pickering, Steven J., Salzmann, U, Howell, Fergus W., Dolan, Aisling, Dolan, Aisling M., Haywood, AM, Salzmann, Ulrich, Francis, Jane E., Dolan, AM, Dowsett, HJ, Hill, Daniel, Pope, JO, Wade, BS   +28 more
core   +1 more source

Unprecedented Arctic sea ice thickness loss and multiyear-ice volume export through Fram Strait during 2010–2011

Environmental Research Letters, 2022
The satellite-observed sea ice thickness (SIT) records from 2003 to 2020 identify an extreme SIT loss during 2010–2011. Ice thickness budget analysis demonstrates that the thickness loss was associated with an extraordinarily large multiyear ice (MYI ...
Xuewei Li, Qinghua Yang, Lejiang Yu, Paul R Holland, Chao Min, Longjiang Mu, Dake Chen   +6 more
doaj   +1 more source

An assessment of Antarctic sea-ice thickness in CMIP6 simulations with comparison to the satellite-based observations and reanalyses [PDF]

The Cryosphere
Sea-ice thickness, though critical to our understanding of sea-ice variability, remains relatively understudied compared to surface sea-ice parameters in the Southern Ocean.
S. Trivedi, W. Hobbs, M. Raphael
doaj   +1 more source

Evidence for the stability of the West Antarctic Ice Sheet divide for 1.4 million years [PDF]

, 2016
Past fluctuations of the West Antarctic Ice Sheet (WAIS) are of fundamental interest because of the possibility of WAIS collapse in the future and a consequent rise in global sea level.
Sugden, David, Stuart, Finlay, Freeman, Stewart, Freeman, Stewart P.H.T., Woodward, John, Marrero, Shasta, Steig, Eric J., Stuart, Finlay M., Westoby, M. J., Westoby, Matt, Sugden, David E., Marrero, Shasta M., Freeman, Stewart P. H. T., Dunning, Stuart, Winter, Kate, Hein, Andrew, Westoby, Matthew J., Hein, Andrew S., Dunning, Stuart A., Steig, Eric, Steig, Eric.J., Hein, Andrew; id_orcid   +21 more
core   +1 more source

Sea-ice evaluation of NEMO-Nordic 1.0: a NEMO–LIM3.6-based ocean–sea-ice model setup for the North Sea and Baltic Sea [PDF]

Geoscientific Model Development, 2017
The Baltic Sea is a seasonally ice-covered marginal sea in northern Europe with intense wintertime ship traffic and a sensitive ecosystem. Understanding and modeling the evolution of the sea-ice pack is important for climate effect studies and ...
P. Pemberton, U. Löptien, R. Hordoir, A. Höglund, S. Schimanke, L. Axell, J. Haapala   +6 more
doaj   +1 more source

Antarctic sea ice thickness and snow-to-ice conversion from atmospheric reanalysis and passive microwave snow depth [PDF]

, 2008
Passive microwave snow depth, ice concentration, and ice motion estimates are combined with snowfall from the European Centre for Medium-Range Weather Forecasting (ECMWF) reanalysis (ERA-40) from 1979-2001 to estimate the prevalence of snow-to-ice ...
Markus, Thorsten, Ted Maksym, Thorsten Markus, Maksym, Edward   +3 more
core   +2 more sources

Deriving Antarctic Sea‐Ice Thickness From Satellite Altimetry and Estimating Consistency for NASA's ICESat/ICESat‐2 Missions

Geophysical Research Letters, 2021
With the launch of the Ice, Cloud and Land Elevation Satellite‐2 (ICESat‐2), densely measuring the Antarctic ocean all year long, monthly sea ice thickness changes can be inspected.
Yue Xu, Huan Li, Baojian Liu, Hongjie Xie, Burcu Ozsoy‐Cicek   +4 more
doaj   +1 more source

A New Perspective on Four Decades of Changes in Arctic Sea Ice from Satellite Observations

Remote Sensing, 2022
Arctic sea ice characteristics have been changing rapidly and significantly in the last few decades. Using a long-term time series of sea ice products from satellite observations—the extended AVHRR Polar Pathfinder (APP-x)—trends in sea ice concentration,
Xuanji Wang, Yinghui Liu, Jeffrey R. Key, Richard Dworak   +3 more
doaj   +1 more source

Linking Regional Winter Sea Ice Thickness and Surface Roughness to Spring Melt Pond Fraction on Landfast Arctic Sea Ice

Remote Sensing, 2017
The Arctic sea ice cover has decreased strongly in extent, thickness, volume and age in recent decades. The melt season presents a significant challenge for sea ice forecasting due to uncertainty associated with the role of surface melt ponds in ice ...
Sasha Nasonova, Randall K. Scharien, Christian Haas, Stephen E. L. Howell   +3 more
doaj   +1 more source