Annals o [ Glaciology 14 1990 @ International Glaciological Society LITTLE ICE AGE (NEOGLACIAL) PALEOENVIRONMENTAL CONDITIONS AT SIPLE STATION, ANTARCTICA

• Main Authors: Ellen Mosley-thompson, Lonnie G. Thompson, Pieter M. Grootes, N. Gundestrup
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Amundsen-Scott; Siple; South Pole; Antarc*; Antarctica; ice core; South pole
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1028.3034; http://research.bpcrc.osu.edu/Icecore/publications/Mosley-Thompson_et_al_Annals_of_Glaciology_1990.pdf

The 550-year records of 6180 and dust concentrations from Siple Station, Antarctica suggest warmer and less dusty atmospheric conditions from 1600 to 1830 A.D. which encompasses much of the northern hemisphere Little Ice Age (LIA). · Dust and 6180 data from South Pole Station indicate that the opposite conditions (e.g. cooler and more dusty) were prevalent there during the LIA. Meteorological data from 1945-85 show that the LIA temperature opposition between Amundsen-Scott and Siple, inferred from 5180, is consistent with the present spatial distribution of surface temperature. There is some observational evidence suggesting that under present conditions stronger zonal westerlies produce a temperature pattern similar to that of the LIA. These regional differences demonstrate that a suite of spatially distributed, high resolution ice-core records will be necessary to characterize the LIA in Antarctica