Western Indian Ocean SST signal and anomalous Antarctic sea-ice concentration variation  

作　　者：LIU Na ZHANG Zhanhai CHEN Hongxia LIN Lina 

机构地区：[1]First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China [2]Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, ChinaReceived 13 June 2010 accepted 2 December 2010

出　　处：《Acta Oceanologica Sinica》2011年第2期9-13,共5页海洋学报（英文版）

基　　金：The National Basic Research Program of China (973 Program) under contract No. 2010CB950301;the National Nature Science Foundation of China (40706015);Special Fund Basic Research and Operating Expenses under contract No. 2010T01;National Key Technology R&D Program of China under contract No.2011BAC03B02

摘　　要：Teleconnection between El Nino/La Nina-Southern Oscillation （ENSO） phenomenon and anomalous Antarctic sea-ice variation has been studied extensively.In this study,impacts of sea surface temperature in the Indian Ocean on Antarctic sea-ice change were investigated during Janaury 1979 and October 2009.Based on previous research results,sea areas in the western Indian Ocean （WIO;50°–70°E,10 °–20 °S） are selected for the resreach.All variables showed 1-10 year interannual timescales by Fast Founer Tranaform （FFT） transformation.Results show that i） strong WIO signals emerged in the anomalous changes of Antarctic sea-ice concentration;ii） significant positive correlations occurred around the Antarctic Peninsula,Ross Sea and its northwest peripheral sea region iii） negative correlation occurred in the Indian Ocean section of the Southern Ocean,Amundsen Seas,and the sea area over northern Ross Sea;and iv） the atmospheric anomalies associated with the WIO including wind,meridional heat flux,and surface air temperature over southern high latitudes were the possible factors for the teleconnection.Teleconnection between El Nino/La Nina-Southern Oscillation （ENSO） phenomenon and anomalous Antarctic sea-ice variation has been studied extensively.In this study,impacts of sea surface temperature in the Indian Ocean on Antarctic sea-ice change were investigated during Janaury 1979 and October 2009.Based on previous research results,sea areas in the western Indian Ocean （WIO;50°–70°E,10 °–20 °S） are selected for the resreach.All variables showed 1-10 year interannual timescales by Fast Founer Tranaform （FFT） transformation.Results show that i） strong WIO signals emerged in the anomalous changes of Antarctic sea-ice concentration;ii） significant positive correlations occurred around the Antarctic Peninsula,Ross Sea and its northwest peripheral sea region iii） negative correlation occurred in the Indian Ocean section of the Southern Ocean,Amundsen Seas,and the sea area over northern Ross Sea;and iv） the atmospheric anomalies associated with the WIO including wind,meridional heat flux,and surface air temperature over southern high latitudes were the possible factors for the teleconnection.

关 键 词：Antarctic sea-ice western Indian Ocean sea surface temperature 

分 类 号：P716.12[天文地球—海洋科学] P462.41