A Shifting Tripolar Pattern of Antarctic Sea Ice Concentration Anomalies During Multi‐Year La Niña Events

Improving Multiyear Sea Ice Concentration Estimates with Sea Ice Drift

Multiyear ice (MYI) concentration can be retrieved from passive or active microwave remote sensing observations. One of the algorithms that combines both observations is the Environmental Canada Ice Concentration Extractor (ECICE). However, factors such as ridging, snow wetness and metamorphism can cause significant changes in brightness temperature and backscatter, leading to misidentification...

Antarctic summer sea ice concentration and extent

Antarctic summer sea ice concentration and extent: comparison of ODEN 2006 ship observations, satellite passive microwave and NIC sea ice charts B. Ozsoy-Cicek, H. Xie, S. F. Ackley, and K. Ye Laboratory for Remote Sensing and Geoinformatics, Department of Geological Sciences, University of Texas at San Antonio, Texas 78249, USA Department of Management Science and Statistics, University of Tex...

Snow on Antarctic Sea Ice

Snow on Antarctic sea ice plays a complex and highly variable role in air-sea-ice interaction processes and the Earth’s climate system. Using data collected mostly during the past 10 years, this paper reviews the following topics: snow thickness and snow type and their geographical and seasonal variations; snow grain size, density, and salinity; frequency of occurrence of slush; thermal conduct...

Antarctic Sea ice--a habitat for extremophiles.

The pack ice of Earth's polar oceans appears to be frozen white desert, devoid of life. However, beneath the snow lies a unique habitat for a group of bacteria and microscopic plants and animals that are encased in an ice matrix at low temperatures and light levels, with the only liquid being pockets of concentrated brines. Survival in these conditions requires a complex suite of physiological ...

Ultraviolet levels under sea ice during the antarctic spring.