Results 341 to 350 of about 471,351 (368)

The deuterium concentration in Arctic sea ice

Journal of Geophysical Research, 1961
Samples taken from cores of sea ice collected near Ice Island T-3 at 80°18′N, 113°W, and on US-IGY Drifting Station Alpha at approximate locations of 85°40′N, 127°W, and 83°N, 165°W, were analyzed for their relatives deuterium content. A plot of deuterium concentration vs.
Irving Friedman, Beatrice Schoen, Joseph Harris   +2 more
openaire   +1 more source

Sea-Ice Concentration Derived From GNSS Reflection Measurements in Fram Strait

IEEE Transactions on Geoscience and Remote Sensing, 2019
Reflection power derived from the global navigation satellite system (GNSS) observations and its sensitivity to sea-ice concentration are investigated in this article.
A. M. Semmling, A. Rösel, D. Divine, S. Gerland, G. Stienne, S. Reboul, Marcel Ludwig, J. Wickert, H. Schuh   +8 more
semanticscholar   +1 more source

Seasonal variations in sea ice motion and effects on sea ice concentration in the Canada Basin

Journal of Geophysical Research: Oceans, 1989
Drifting buoy data, surface pressure, and geostrophic wind analyses from the Arctic Ocean Buoy Program are used to examine seasonal features of the sea ice motion in the Canada Basin for 1979–1985. Although the 7‐year annual mean motion in this region is clockwise, the month‐to‐month motion is highly variable.
Mark C. Serreze, Roger G. Barry, Alfred S. McLaren   +2 more
openaire   +1 more source

Assimilation of Satellite-Retrieved Sea Ice Concentration and Prospects for September Predictions of Arctic Sea Ice

Journal of Climate, 2021
AbstractThe current GFDL seasonal prediction system achieved retrospective sea ice extent (SIE) skill without direct sea ice data assimilation. Here we develop sea ice data assimilation, shown to be a key source of skill for seasonal sea ice predictions, in GFDL’s next-generation prediction system, the Seamless System for Prediction and Earth System ...
Yong-Fei Zhang, Mitchell Bushuk, Michael Winton, Bill Hurlin, Xiaosong Yang, Tom Delworth, Liwei Jia   +6 more
openaire   +1 more source

Spatiotemporal Pattern of Ice Concentration in the Chukchi Sea

Russian Meteorology and Hydrology, 2020
The seasonal and long-term variability of sea ice concentration in the Chukchi Sea in 1997–2016 was analyzed using all available satellite data on sea ice conditions. It is shown that the zone of maximum variability is situated in the areas with the ice concentration equal to (4–6)/10 and follows the displacements of this area: it moves to the north in
V. V. Plotnikov, N. M. Vakul’skaya, V. A. Dubina, O. N. Rudenko, V. I. Pustoshnova   +4 more
openaire   +1 more source

SAR Algorithm for Sea Ice Concentration—Evaluation for the Baltic Sea

IEEE Geoscience and Remote Sensing Letters, 2012
A new sea ice concentration algorithm has been developed for C-band synthetic aperture radar data. Detailed autocorrelation statistics are derived and adopted by the algorithm, and a neural network is utilized for training against 41 sea ice charts. The charts are produced by ice analysts at the Swedish Ice Service and cover the Baltic Sea.
A. Berg, L. E. B. Eriksson
openaire   +1 more source

A Note on the Determination of Sea Ice Concentration

Journal of Offshore Mechanics and Arctic Engineering, 1991
Abstract An argument is presented for the inclusion of diffusive effects in the equation governing the redistribution of sea ice. An ice concentration equation including diffusion is derived through Reynold’s averaging. This advection-diffusion equation is solved using the Eulerian-Lagrangian time-splitting technique, which affords both ...
openaire   +1 more source

Climatic trends of sea surface temperature and sea ice concentration in the Barents Sea

2021
<p>Sea ice loss in the Arctic region is an important indicator for climate change. Especially in the Barents Sea, which is expected to be free of ice by the mid of this century (Onarheim et al., 2018). Here, we analyze 38 years (1982-2019) of daily gridded sea surface temperature (SST) and sea ice concentration (SIC) from the Operational ...
Bayoumy Mohamed, Frank Nilsen, Ragnheid Skogseth   +2 more
openaire   +1 more source

Concentrations and properties of ice nucleating substances in exudates from Antarctic sea-ice diatoms

Environmental Science: Processes & Impacts, 2021
Field Antarctic sea-ice diatom supernatant samples showed ice nucleating abilities.
Yu Xi, Alexia Mercier, Cheng Kuang, Jingwei Yun, Ashton Christy, Luke Melo, Maria T. Maldonado, James A. Raymond, Allan K. Bertram   +8 more
openaire   +2 more sources

Oscillatory behavior in Arctic sea ice concentrations

Journal of Geophysical Research: Oceans, 1996
We have done a frequency analysis of the 9‐year record of sea ice concentrations obtained with the NASA Nimbus 7 scanning multichannel microwave radiometer (SMMR). Because of the periodic revisit time of the SMMR, we are able to examine recurrence of shorter‐period oscillations, as aliased by the revisit frequency, and longer‐period oscillations per se.
Per Gloersen, Jun Yu, Erik Mollo‐Christensen   +2 more
openaire   +1 more source