摘要
本文利用NMC客观分析200hPa（198．3－1988．2）平均纬向风资料，对其准两年振荡和准3－4年振荡进行了单点滞后相关分析。结果发现：200hPa纬向风准3－4年振荡存在三支波列：欧亚大陆型；南半球－赤道太平洋－北美型；印度洋－澳大利亚型。其中以南半球－赤道太平洋－北美型最为明显。200hPa纬向风准两年振荡存在一支波列：太平北美型，但这支波列的中心位置在赤道太平洋地区变化较大。
The mean zond wind data on 200hPa level from March 1968 to February 1988 of NMC were amalyzed in terms of quasi -biennial and 3- 4 years' oscillations by means of lag-correlation method. It has been found that there are three patterns of wave train in the oscillation of 3 - 4 years, i. e. 1. Eurasian, 2- Southern hemispheric - equatorial Pacific - Northem Americon and 3. Indian Ocean- Australian. Among them the pattern 2 is the most significant, and only one wave train is found for quasi-enneial oscillation with a wide variable central position over equatorial Pacific area.
出处
《气象科学》
CSCD
北大核心
1994年第2期172-176,共5页
Journal of the Meteorological Sciences
