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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 21 (1952), S. 52-57 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Conclusions Importance pour l'économie mondiale du problème de la connaissance des vents en altitude et necessité de la collaboration des organisations scientifiques. Suggestions pour un plan de travail des Etats: a) extension au sol du réseau aérologique mondial tout spécialement dans l'hémisphère sud. b) utilisation des déplacements de navires spécialement équipés pour la télémetrie des radio-sondes. c) exploitation systématique des anciens journaux de navigation pour connaître les positions des cirrus. d) observation généralisée des cirrus par les navires et les stations au sol actuelles: directives correspondantes à donner par les Amirautés et les Marines Marchandes. e) préparation en 1953 de journées mondiales d'observations aérologiques spécialement dans l'hémisphère sud. f) collationnement des résultats: établissement généralisé de pilot charts. analogues aux cartes ≪upper air≫ américaines, leur extension systématique. g) rôle de l'Organisation Météorologique Mondiale et de l'Union géodésique et géophysique internationale pour l'organisation du plan de travail et l'exploitation des résultats obtenus.
    Notes: Summary About the middle of the 19th century, clipper sailing made astouding progress, owing toMaury's famous works on surface winds. These works, kept up to date and constantly perfected since, were to lead to the American ≪Pilots Charts≫ known to-day. — We are at present perfectly acquainted with the high altitude winds in the medium range of the Northern hemisphere, since modern flying tends more and more to adopt the isobaric method. As for the Southern hemisphere, our aerological knowledge, although obtained from theoretical studies and from a few isolated measurements remains very incomplete. However, it seems practically certain that air currents and the ≪Jet Stream≫ do exist, with strong and very regular Western components. — In practice, this means that in view of the gradual decrease of sea travel and of the generalisation of high altitude flying exact knowledge of air currents becomes indispensable: the working conclusions of this point will be found at the end of this communication. — For example, it is already an evident fact that the route from Europe to Australia will lie via South Africa and the Kerguelen Islands, and no longer via India. More generally speaking, a kind of one-way route will appear in the Southern hemisphere on the level of 34° South, as shown by our sketches, and we suggest that this migh be called the ≪Southern Circus≫.
    Type of Medium: Electronic Resource
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