ADVANCES IN POLAR SCIENCE ›› 2013, Vol. 25 ›› Issue (3): 268-277.DOI: 10.3724/SP.J.2013.00268

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ANALYSIS OF WEATHER AND SEA ICE AT THE ANTARCTIC GREAT WALL STATION IN 2012

Yang Qinghua1,Zhang Benzheng2,Li Ming1,Meng Shang1   

  1. 1National Marine Environmental Forecasting Center, Beijing 100081, China; 2Wuhan Meteorological Service, Wuhan 430040, China
  • Received:2013-01-10 Revised:2013-04-25 Online:2013-09-30 Published:2013-09-30
  • Contact: Yang Qinghua

Abstract: Based on the observation at Great Wall Station (GWS) in 2012, the meteorology and sea ice parameters are analyzed compared with the climate statistics from 1985 to 2010. Firstly, the annual air pressure and temperature are lower, the N-W wind is less frequent while the E-SE wind is much more frequent than the climatic mean. The fog occurs significantly less, while the falling snow and blowing snow is significantly higher than the normal level. Secondly, the Antarctic atmospheric circulation is analyzed to explain the GWS weather anomalies happened in 2012. Finally, it shows that the sea ice in the Great Wall Bay is in an instability status which is more likely affected by the atmospheric dynamics. Three frozen periods and three partial frozen periods occurred in 2012.

Key words: Antarctic Great Wall station, weather, anomaly, atmospheric circulation, sea ice