Accession Number : ADP007297

Title :   Antarctic Sea Ice and Temperature Variations,

Corporate Author : ILLINOIS UNIV AT URBANA DEPT OF ATMOSPHERIC SCIENCES

Personal Author(s) : Walsh, John E. ; Zwally, H. Jay ; Weatherly, John W.

Report Date : MAR 1992

Pagination or Media Count : 6

Abstract : Monthly antarctic station temperatures are used in conjunction with grids of sea ice coverage in order to evaluate temporal trends and the strength of associations between the two variables at lags of up to several seasons. The trends of temperature are predominantly positive in winter and summer, but predominantly negative in spring. The spatially aggregated trend of temperature is small but positive, while the corresponding trend of ice coverage is small but negative. Cross-correlations between concurrent anomalies of the two variables are negative over most of the continent and are strongest over the Antarctic Peninsula, especially in winter. In regions other than the Antarctic Peninsula, lag correlations between seasonal anomalies are generally stronger with ice lagging the summer temperatures and with ice leading the winter temperatures.

Descriptors :   *SEA ICE, *TEMPERATURE, *ANTARCTIC REGIONS, ANOMALIES, GRIDS, ICE, OCEANS, ORGANIZATIONS, SEASONS, VARIABLES, ENVIRONMENTAL IMPACT, GREENHOUSE EFFECT.

Subject Categories : Meteorology
      Snow, Ice and Permafrost

Distribution Statement : APPROVED FOR PUBLIC RELEASE