Warming of the Antarctic ice-sheet surface since the 1957 International Geophysical Year

  title={Warming of the Antarctic ice-sheet surface since the 1957 International Geophysical Year},
  author={Eric J. Steig and David P. Schneider and Scott David Rutherford and Michael Everett Mann and Josefino C. Comiso and Drew T. Shindell},
Assessments of Antarctic temperature change have emphasized the contrast between strong warming of the Antarctic Peninsula and slight cooling of the Antarctic continental interior in recent decades. This pattern of temperature change has been attributed to the increased strength of the circumpolar westerlies, largely in response to changes in stratospheric ozone. This picture, however, is substantially incomplete owing to the sparseness and short duration of the observations. Here we show that… 

An assessment and interpretation of the observed warming of West Antarctica in the austral spring

We synthesize variability and trends in multiple analyses of Antarctic near-surface temperature representing several independent source datasets and spatially complete reconstructions, and place

Recent Antarctic Peninsula warming relative to Holocene climate and ice-shelf history

Warming for several centuries rendered ice shelves on the northeastern Antarctic Peninsula vulnerable to collapse, and continued warming to temperatures that now exceed the stable conditions of most of the Holocene epoch is likely to cause ice-shelf instability to encroach farther southward along the Antarctic Peninsula.

Holocene Southern Ocean surface temperature variability west of the Antarctic Peninsula

It is concluded that during the Holocene, Southern Ocean temperatures at the western Antarctic Peninsula margin were tied to changes in the position of the westerlies, which have a critical role in global carbon cycling.

The Springtime Influence of Natural Tropical Pacific Variability on the Surface Climate of the Ross Ice Shelf, West Antarctica: Implications for Ice Shelf Thinning

During the austral spring season, significant surface warming across West Antarctica has shifted westward to the Ross Ice Shelf in recent decades in response to enhanced cyclonic circulation over the Ross Sea, which is tied to the springtime shift of the Interdecadal Pacific Oscillation to its negative phase after 1992.

Contrasting climate change in the two polar regions

The two polar regions have experienced remarkably different climatic changes in recent decades. The Arctic has seen a marked reduction in sea-ice extent throughout the year, with a peak during the

Spatial patterns of recent Antarctic surface temperature trends and the importance of natural variability: lessons from multiple reconstructions and the CMIP5 models

The recent annually averaged warming of the Antarctic Peninsula, and of West Antarctica, stands in stark contrast to very small trends over East Antarctica. This asymmetry arises primarily from a

Autumn Cooling of Western East Antarctica Linked to the Tropical Pacific

Over the past 60 years, the climate of East Antarctica cooled while portions of West Antarctica were among the most rapidly warming regions on the planet. The East Antarctic cooling is attributed to

Temperature Change on the Antarctic Peninsula Linked to the Tropical Pacific

AbstractSignificant summer warming over the eastern Antarctic Peninsula in the last 50 years has been attributed to a strengthening of the circumpolar westerlies, widely believed to be anthropogenic

The impact of changes in sea ice advance on the large winter warming on the western Antarctic Peninsula

Over 1979–2007 near‐surface air temperatures on the maritime western side of the Antarctic Peninsula have increased throughout the year, with the greatest monthly temperature rise of 1.7 °C dec−1

Climate change: Brief but warm Antarctic summer

  • E. Steig
  • Environmental Science, Geography
  • 2012
An extended deuterium-based record of Holocene temperature variations at James Ross Island, off the northeastern tip of the Antarctic Peninsula, suggests that future warming could destabilize ice shelves southwards along the peninsula and places recent warming in a long-term context of natural variability.



Ice cores record significant 1940s Antarctic warmth related to tropical climate variability

  • D. SchneiderE. Steig
  • Environmental Science, Geography
    Proceedings of the National Academy of Sciences
  • 2008
A composite of water stable isotope data from high-resolution ice cores from the West Antarctic Ice Sheet shows extreme positive anomalies in the 1936–45 decade that are significant in the context of the background 20th Century warming trend.

Recent Rapid Regional Climate Warming on the Antarctic Peninsula

The Intergovernmental Panel on Climate Change (IPCC) confirmed that mean global warming was 0.6 ± 0.2 °C during the 20th century and cited anthropogenic increases in greenhouse gases as the likely

Antarctic climate cooling and terrestrial ecosystem response

Data from the dry valleys are presented representing evidence of rapid terrestrial ecosystem response to climate cooling in Antarctica, including decreased primary productivity of lakes and declining numbers of soil invertebrates, which poses challenges to models of climate and ecosystem change.

Southern Hemisphere climate response to ozone changes and greenhouse gas increases

While most of the Earth warmed rapidly during recent decades, surface temperatures decreased significantly over most of Antarctica. This cooling is consistent with circulation changes associated with

Antarctic atmospheric temperature trend patterns from satellite observations

Tropospheric temperatures in the Antarctic are retrieved by linearly combining satellite‐borne Microwave Sounding Unit (MSU) channels 2 and 4 observations. We show good agreement between

Interpretation of Recent Southern Hemisphere Climate Change

Evidence is presented that recent trends in the SH tropospheric circulation can be interpreted as a bias toward the high-index polarity of this pattern, with stronger westerly flow encircling the polar cap.

Recent variability and trends of Antarctic near‐surface temperature

[1] A new monthly 1° × 1° Antarctic near-surface temperature reconstruction for 1960–2005 is presented. The use of numerical model fields to establish spatial relationships between fifteen continuous

Twentieth century simulation of the southern hemisphere climate in coupled models. Part II: sea ice conditions and variability

We examine the representation of the mean state and interannual variability of Antarctic sea ice in six simulations of the twentieth century from coupled models participating in the Intergovernmental

A Synthesis of Antarctic Temperatures

Abstract Monthly surface air temperatures from land surface stations, automatic weather stations, and ship/buoy observations from the high-latitude Southern Hemisphere are synthesized into gridded

Recent Climate Variability in Antarctica from Satellite-Derived Temperature Data

Recent Antarctic climate variability on month-to-month to interannual time scales is assessed through joint analysis of surface temperatures from satellite thermal infrared observations ( TIR) and