Influence of the 6-9 day wave disturbances on temperature, vorticity and cloud cover over the tropical Atlantic during summer 1985

被引：2
|
作者：
Oubuih, J [1 ]
de Felice, P [1 ]
Viltard, A [1 ]
机构：
[1] Ecole Polytech, Meteorol Dynam Lab, CNRS, F-91128 Palaiseau, France
来源：
METEOROLOGY AND ATMOSPHERIC PHYSICS | 1999年 / 69卷 / 3-4期
关键词：
D O I：
10.1007/BF01030417
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
Using ECMWF and NCEP/NCAR analysis and reanalysis data sets, 6-9 day wave-like oscillations have been described in the African and tropical Atlantic troposphere during the summers of 1981 and 1985. In spite of several kinematic analogies, their structure was quite different from the African waves. In this paper we study the connection between the 6-9 day oscillations and the cloud cover with help of the ISCCP-C1 data set. The largest cloud cover oscillation (+/-30%) occurs in the 800-680 hPa layer, a maximum (minimum) is connected with a cyclonic (anticyclonic) circulation. The influence of the 6-9 day oscillation on horizontal water vapor flux and temperature is also displayed.
引用
收藏
页码：137 / 144
页数：8
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