A fast moving easterly wave of the West Africa troposphere |
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| Authors: | A Diedhiou S Janicot A Viltard P de Felice H Laurent |
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| Institution: | (1) Present address: Laboratoire de Météorologie Dynamique du CNRS, Ecole Polytechnique, F-91128 Palaiseau Cedex, France;(2) Present address: Institut Français de Recherche Scientifique pour le Développment en Coopération, France |
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| Abstract: | Summary This paper documents a tropospheric synoptic-scale wavelike disturbance over Northern Africa and the tropical Atlantic during summer, in the 3.–5.day band period, different from the African wave. It has a velocity of 10–12 degree longitude per day instead of 6–8, a slighter shorter period, i.e. 3.5 instead of 4.5 days. It is best seen between 5°–7° N whilst the African wave has its largest amplitude about 12° N. The data used are NCEP/NCAR reanalyses and radiosonde data.With 10 Figures |
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