摘要
本文用“综合海洋大气资料集”(COADS)中月平均总云量资料得到了1905—1985年西太平洋地区夏季云量的历史演变.在副热带地区存在一个云量最少的带,这个云带的演变能较好地反映西太平洋副热带高压的变化.云带的位置和中心云量值具有明显的10年尺度的变化,它与中国东部雨量的变化有着明显的关系.因此它能提供近80年形成我国东部气候变化的夏季西太平洋副热带地区的环流变化的特征.
In this paper, a long term series of monthly total cloud amount data in the western Pacific (120- 160 ° E) area during July of 1905-7 1985 has been analysed. There is a belt of minimum value of cloudiness in the subtropical area. The location of this belt and minimum value of cloudiness show the decade scale fluctuation during the past 80 years. The evolution of this belt agrees with the variation of the western subtropical high in. summer. Thus it can indicate the variation of the western Pacific subtropical high during the earlier period in this century. It is found that the rainfall in East China is well correlated with the variation of the cloudiness in the subtropical area of the western Pacific.
出处
《大气科学》
CSCD
北大核心
1993年第5期576-583,共8页
Chinese Journal of Atmospheric Sciences
