Summary. A theoretical model of the local circulation in a valley is obtained. The region under study consists of a V-shaped trough of finite length leading into a flat plain, and a given rate of heat flow from ground to air is assumed. The equations of motion are solved numerically, and give a circulation featuring valley and slope winds, their respective anti-winds (compensating flow at higher levels) and vertical currents.Zusammenfassung. Es wird ein theoretisehes Modell der lokalen Zirkulation in einem Tale entwickelt. Das untersuchte Gebiet ist ein V-f6rmiges Tal endlicher L/~nge, das in eine Ebene miindet. Es wird die Annahme zugrunde gelegt, dab eine gegebene XVgrmemenge yon der Erdoberflgche an die Luft abgegeben wird. Die numerische LOsung der Bewegungsgleichungen gibt die Berg-und Hangwinde sowie die entsprechenden AusgleichstrSmungen oder Antiwindc und VertikMstrOmungen.R~sum~. Un modble thdorique de l'dcoulement local d'une vallde est ddveloppd. La rdgion dtudide consiste en une vMlde de longueur finie qui ddbouehe sur une plaine horizontMe, et on postule, ~ l'interface air-sol, un flux thermique donnd. On rdsout les dquations du mouvement numdriquement, et on obtient un dcoulement off les vents de vallde (longitudinaux) et de pente (transversaux), leurs contre-vents respectifs, et des courants verticaux, sont les caractbres principaux.
Working in western Nepal as a climatologist, one encounters conditions and problems very different from those in technologically advanced countries. This article discusses the working environment, the present state of climatology, some recent findings, and the prospects for future development in this area.
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