Results 11 to 20 of about 403,562 (281)

The potential of sea ice leads as a predictor for summer Arctic sea ice extent [PDF]

open access: yesThe Cryosphere, 2018
The Arctic sea ice extent throughout the melt season is closely associated with initial sea ice state in winter and spring. Sea ice leads are important sites of energy fluxes in the Arctic Ocean, which may play an important role in the evolution of ...
Y. Zhang   +9 more
doaj   +4 more sources

An improved sea ice detection algorithm using MODIS: application as a new European sea ice extent indicator [PDF]

open access: yesThe Cryosphere, 2021
The continued loss of sea ice in the Northern Hemisphere due to global warming poses a threat to biota and human activities, evidencing the necessity of efficient sea ice monitoring tools.
J. A. Parera-Portell   +3 more
doaj   +6 more sources

Optimization of a sea ice model using basinwide observations of Arctic sea ice thickness, extent, and velocity [PDF]

open access: yesJournal of Climate, 2006
A stand-alone sea ice model is tuned and validated using satellite-derived, basinwide observations of sea ice thickness, extent, and velocity from the years 1993 to 2001. This is the first time that basin-scale measurements of sea ice thickness have been
Cresswell, Douglas J.   +3 more
core   +3 more sources

Spatial and Temporal Variations in the Extent and Thickness of Arctic Landfast Ice [PDF]

open access: yesRemote Sensing, 2019
Analyses of landfast ice in Arctic coastal areas provide a comprehensive understanding of the variations in Arctic sea ice and generate data for studies on the utilization of the Arctic passages.
Zixuan Li   +7 more
doaj   +2 more sources

Regime Shift in Arctic Ocean Sea‐Ice Extent

open access: yesGeophysical Research Letters
A regime shift is an abrupt, substantial, and persistent change in the state of a system. We show that a regime shift in the September Arctic sea‐ice extent (SIE) occurred in 2007. Before 2007, September SIE was declining approximately linearly.
Harry L. Stern
doaj   +2 more sources

Fluctuations in Arctic sea-ice extent: comparing observations and climate models. [PDF]

open access: yesPhilos Trans A Math Phys Eng Sci, 2018
The fluctuation statistics of the observed sea-ice extent during the satellite era are compared with model output from CMIP5 models using a multifractal time series method. The two robust features of the observations are that on annual to biannual time scales the ice extent exhibits white noise structure, and there is a decadal scale trend associated ...
Agarwal S, Wettlaufer JS.
europepmc   +5 more sources

Sea ice index monitors polar ice extent [PDF]

open access: yesEos, Transactions American Geophysical Union, 2004
In September 2002, Arctic sea ice extent reached a minimum unprecedented in 24 years of satellite passive microwave observations, and almost certainly unmatched in 50 years of charting Arctic ice [Serreze et al., 2003]. Again, in September 2003, ice retreated to an unusually low extent, almost equaling the previous year's minimum (Figure l).
Florence Fetterer, Kenneth Knowles
openaire   +1 more source

April sea ice extent in the Barents Sea, 1850?2001 [PDF]

open access: yesPolar Research, 2003
Three observational data sets are used to construct a continuous record (1850–2001) of April ice edge position in the Barents Sea: two sets of Norwegian ice charts (one from 1850 to 1949 and the other from 1966 to 2001) and Soviet aircraft reconnaissance ice extent charts from 1950 to 1966.
Shapiro, Inna   +2 more
openaire   +4 more sources

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

open access: yesThe 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   +10 more
doaj   +1 more source

Sea-ice extent and its trend provide limited metrics of model performance [PDF]

open access: yesThe Cryosphere, 2014
We examine how the evaluation of modelled sea-ice coverage against reality is affected by uncertainties in the retrieval of sea-ice coverage from satellite, by the usage of sea-ice extent to overcome these uncertainties, and by internal variability.
D. Notz
doaj   +1 more source

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