Attenuated Interannual Variability of Austral Winter Antarctic Sea Ice Over Recent Decades
نویسندگان
چکیده
منابع مشابه
Interpretation of recent Antarctic sea ice variability
[1] Trends in the satellite-derived Antarctic sea ice concentrations (1979–2002) show pronounced increase (decrease) in the central Pacific sector (Bellingshausen/ western Weddell sector) by 4–10% per decade. Confidence levels for these regional trends exceed 95%. Positive polarities of the Antarctic Oscillation (AAO) lead to more (less) ice in the eastern Ross/Amundsen sector (Bellingshausen/n...
متن کاملSeasonal to interannual variability in Antarctic sea-ice surface melt
Satellite remote sensing time-series images are used to illustrate the spatial and temporal variability in Antarctic-wide seaice surface melting during the austral summer. Combinations of collocated data from the Active Microwave Instrument on board the ERS-1/2 spacecraft, RadarSat Synthetic Aperture Radar (SAR) and SSM/I passive microwave radiometer are used in characterization of the effects ...
متن کاملRecent changes in Antarctic Sea Ice.
In contrast to the Arctic, total sea ice extent (SIE) across the Southern Ocean has increased since the late 1970s, with the annual mean increasing at a rate of 186×10(3) km(2) per decade (1.5% per decade; p<0.01) for 1979-2013. However, this overall increase masks larger regional variations, most notably an increase (decrease) over the Ross (Amundsen-Bellingshausen) Sea. Sea ice variability re...
متن کاملInterannual Variability in Weddell Sea Ice from Ers Wind Scatterometer
ERS-1/2 SAR and Wind Scatterometer data are analyzed together with DMSP SSM/I microwave radiometer data to investigate interannual variability in Weddell Sea ice and summer melt signatures during the period 1992-1997. Simultaneous SAR and Scatterometer images were obtained during a February 1995 cruise of the H.M.S. Endurance and aerial photographs collected for validation of the satellite obse...
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A strengthening of the Amundsen Sea low from 1979 to 2013 has been shown to largely explain the observed increase inAntarctic sea ice concentration in the eastern Ross Sea and decrease in the Bellingshausen Sea. Here it is shown that while these changes are not generally seen in freely running coupled climate model simulations, they are reproduced in simulations of two independent coupled clima...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2020
ISSN: 0094-8276,1944-8007
DOI: 10.1029/2020gl090590