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Contribution à l'amélioration des connaissances sur la variabilité climatique

Contribution à l'amélioration des connaissances sur la variabilité climatique

          
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About the Book

Cette étude a porté sur la partie sud de la Mauritanie, une région ayant subi dès les années 1970 une sécheresse caractérisée par une persistance d'années sèches. Sept stations pluviométriques contenant moins de lacunes, ont été prises en compte dans cette étude. La période d'observation (1950-2007) a permis de bien caractériser les différentes périodes de la variabilité climatique dans la région et également de mener une analyse comparative à l'échelle de la région. L'utilisation de l'indice pluviométrique standardisé (IPS), conjuguée aux tests de détection de rupture confirment les phases humide (1950-1969) et sèche (1970 - 1990) suivies d'une alternance entre année humide et sèche jusqu'à la fin de la période d'observation considérée. La baisse pluviométrique de la période 1970-2007 par rapport à celle de 1950-1969 est 33,5%. De même, les cartes des isohyètes confirment le glissement nord - sud en considérant les périodes 1970-1989 et 1990-2007 par rapport à la période de référence 1950 - 1969. En revanche, les isohyètes de la période 1990 - 2007 ont connu un glissement Sud-nord par rapport à celles de 1970-1989.


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Product Details
  • ISBN-13: 9786138439127
  • Publisher: KS Omniscriptum Publishing
  • Publisher Imprint: Editions Universitaires Europeennes
  • Height: 229 mm
  • No of Pages: 88
  • Spine Width: 5 mm
  • Width: 152 mm
  • ISBN-10: 6138439120
  • Publisher Date: 23 Jan 2019
  • Binding: Paperback
  • Language: French
  • Returnable: N
  • Weight: 141 gr


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