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

  title={An assessment and interpretation of the observed warming of West Antarctica in the austral spring},
  author={David P. Schneider and Clara Deser and Yuko M. Okumura},
  journal={Climate Dynamics},
We synthesize variability and trends in multiple analyses of Antarctic near-surface temperature representing several independent source datasets and spatially complete reconstructions, and place these into the broader context of the behavior of other components of the climate system during the past 30–50 years. Along with an annual-mean trend during the past 50 years of about 0.1°C/decade averaged over Antarctica, there is a distinct seasonality to the trends, with insignificant change (and… 
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
South Pacific circulation changes and their connection to the tropics and regional Antarctic warming in austral spring, 1979–2012
After 1979, statistically significant warming in Antarctica is only observed in austral spring (September–November, SON) across West Antarctica and the Antarctic Peninsula. While previous work has
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.
Winter climate change on the northern and southern Antarctic Peninsula
Abstract Differences in the decadal trend in the winter surface temperature in the northern and southern Antarctic Peninsula have been analysed. Time series from the two stations Esperanza and
Impacts of the north and tropical Atlantic Ocean on the Antarctic Peninsula and sea ice
It is suggested that the north and tropical Atlantic is important for projections of future climate change in Antarctica, and has the potential to affect the global thermohaline circulation and sea-level change.
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
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
Sixty Years of Widespread Warming in the Southern Middle and High Latitudes (1957–2016)
Temperature trends across Antarctica over the last few decades reveal strong and statistically significant warming in West Antarctica and the Antarctic Peninsula (AP) contrasting with no significant
Characteristics of Surface Meteorology at Lindsey Islands, Amundsen Sea, West Antarctica
Investigating warming in West Antarctica is important to understand and predict mass balance changes of the ice sheet. However, clear understanding of the extent and rate of warming across West
Large-Scale Forcing of the Amundsen Sea Low and Its Influence on Sea Ice and West Antarctic Temperature
AbstractUsing empirical orthogonal function (EOF) analysis and atmospheric reanalyses, the principal patterns of seasonal West Antarctic surface air temperature (SAT) and their connection to sea ice


Warming of the Antarctic ice-sheet surface since the 1957 International Geophysical Year
It is shown that significant warming extends well beyond the Antarctic Peninsula to cover most of West Antarctica, an area of warming much larger than previously reported and suggested that neither can be attributed directly to increases in the strength of the westerlies.
Changes in Antarctic temperature, wind and precipitation in response to the Antarctic Oscillation
Output of a 14 year integration with a high-resolution (55 km ×55 km) regional atmospheric climate model is used to study the response of Antarctic near-surface climate to the Antarctic Oscillation
Spatial Patterns of Variability in Antarctic Surface Temperature: Connections to the Southern Hemisphere Annular Mode and the Southern Oscillation
The 17‐year (1982–1998) trend in surface temperature shows a general cooling over the Antarctic continent, warming of the sea ice zone, with moderate changes over the oceans. Warming of the
Rapid climate change in the ocean west of the Antarctic Peninsula during the second half of the 20th century
The climate of the Western Antarctic Peninsula (WAP) is the most rapidly changing in the Southern Hemisphere, with a rise in atmospheric temperature of nearly 3°C since 1951 and associated
On the Interpretation of Antarctic Temperature Trends.
Abstract Determining the rate of atmospheric warming in Antarctica is hampered by the brevity of the temperature records (<50 years), which still contain signals of decadal circulation variability in
Ice cores record significant 1940s Antarctic warmth related to tropical climate variability
  • D. Schneider, E. 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.
A further assessment of surface temperature changes at stations in the Antarctic and Southern Ocean, 1949–2002
Abstract Statistical analyses are carried out, of the annual mean surface air temperature at occupied stations and automatic weather stations in the Antarctic and Southern and Pacific Oceans. The
Antarctic sea ice variations and seasonal air temperature relationships
Monthly Antarctic station temperatures are used in conjunction with grids of sea ice coverage in order to evaluate the temporal trends and the strength of associations between the two variables at
Interpretation of recent Antarctic sea ice variability
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
Climate Variability in the Amundsen and Bellingshausen Seas
Satellite data reveal a 20% decline in sea ice extent in the Amundsen and Bellingshausen Seas in the two decades following 1973. This change is negatively correlated with surface air temperatures on