青藏高原冬季冷暖与亚澳季风之异常
投稿时间:1996-03-27  修订日期:1996-10-05  点此下载全文
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作者单位
白虎志 南京气象学院气象学系, 南京 210044 
朱乾根 南京气象学院气象学系, 南京 210044 
基金项目:青藏高原地-气系统物理过程观测和理论研究资助
中文摘要:利用日本GMS所观测的TBB资料研究了青藏高原冬季冷暖与亚澳冬夏季风的联系。指出,高原西南部冬季异常暖时,副热带夏季风雨带偏北,江南、华南对流受到抑制,海洋大陆、西北和西南低纬太平洋等地对流活跃,表明热带西太平洋夏季风和印尼-北澳冬季风活跃,赤道西太平洋下沉运动发展,这些特征从冬到夏具有很强的持续性。还用1985年个例分析进一步证实了上述结论。研究还表明:高原西南部和东北部冬季热状况的年际变化呈反相关。因此,利用高原整个全区冬季平均热状况进行研究是不合适的。
中文关键词:高原冬季冷暖  亚澳季风  异常  TBB
 
TIBETAN WINTER THERMAL REGIMERELATED TO ASIAN AND AUSTRALIANMONSOON ANOMALIES
Abstract:Relation is investigated of Tibetan winter thermal regime to Asian summ er and Australian winter monsoons in the context of Japan GMS-observed TBB series.Evidence suggests that with winter warm anomaly in the SW Plateau,the subt ropical summer monsoon rainbelt is northward of mean,and convection is suppressed in the south of the Yangtze river and South China and active convection emerges over the marit ime continent,N W and SW Pacific at low lat it udes,suggestive of active summer(winter)monsoon in the tropical w estern Pacific (Indonesia/northern Australia,and developing subsidence in the equat orial western Pacific. These features are maintained from winter to summer,as exemplif ied by the 1985 case.Also, ant icorrelation in the winter thermal conditions is disclosed between the SW and N E parts of the study region on an interannual basis.As a consequence,it is inappropriate to use the regionaly-averaged thermal condition for research purposes.
keywords:Tibetan winter thermal regime  Asian/Australian monsoons  Anomaly  TBB
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