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L'évaporation sous différents climats du sud-ouest Pacifique

L'évaporation sous différents climats du sud-ouest Pacifique PDF Author: Jean-Pierre Brunel
Publisher: IRD Orstom
ISBN: 9782709911924
Category : Evaporation (Meteorology)
Languages : fr
Pages : 426

Book Description
LE TRAVAIL présenté s'intéresse d'abord à l'étude climatique de l'évalpotranspiration dans une région située le long du Tropique Sud, de la Polynésie à la côte Est Australienne, centrée sur la Nouvelle-Calédonie. Il est suivi d'une étude méthodologique de l'évaporation en régions semiarides de l'Australie du Sud. LES GRANDES ZONES climatiques de l'ensemble de la région étudiée sont déterminées par deux structures atmosphériques dynamiques, la Zone de Convergence Inter Tropicale au Nord et la Ceinture Anticyclonique SubTropicale, au Sud. Leurs déplacements périodiques en latitude définissent les climats locaux. L'ÉTUDE CLIMATOLOGIQUE de l'évapotranspiration montre les interactions entre l'évapotranspiration, les bilans énergétiques, les autres éléments du climat et les types de temps rattachés à des situations météorologiques identifiées. Elle met en évidence le rôle de l'advection. L'ÉTUDE MÉTÉOROLOGIQUE réalisée pour différents couverts végétaux, prairie sèche, association forêt claire à eucalyptus - buissons - sol nu, rizière, tente d'effectuer une comparaison entre des méthodes micrométéorologiques classiques et l'utilisation des isotopes naturels stables de l'eau pour suivre les mouvements de l'eau dans le continuum sol - plante - atmosphère. UN ESSAI de synthèse régionale à partir de bilans est proposé. THE WORK which is presented here first deals with climatic studies of evapotranspiration along the South Tropic, from Polynesia to the East coast of Australia. It focuses mainly on New-Caledonia. This study is followed by a methodological study of evapotranspiration in semi-arid areas of South Australia. CLIMATES of the whole region of our interest are governed both by the Inter Tropical Convergence Zone to the North and the Anticyclonic Belt to the South. Their periodic latitudinal movements determine the local climates. CIMATIC STUDIES of evapotranspiration have shown interactions between evapotranspiration, other climatic parameters and types of weather described by some typical meteorogical situations, they have shown also evidence of strong advection. METHODOLOGICAL STUDIES were carried out for various types of vegetation, dry grasslands, Eucalyptus - bush - bare soils associations, rice fields. They have made an attempt to compare classical micrometeorological methods with the use of natural stable isotopes of water to trace water movements in the soil - plant - atmosphere continuum. A REGIONAL SYNTHESIS bas been proposed based on hydrological budgets.

L'évaporation sous différents climats du sud-ouest Pacifique

L'évaporation sous différents climats du sud-ouest Pacifique PDF Author: Jean-Pierre Brunel
Publisher: IRD Orstom
ISBN: 9782709911924
Category : Evaporation (Meteorology)
Languages : fr
Pages : 426

Book Description
LE TRAVAIL présenté s'intéresse d'abord à l'étude climatique de l'évalpotranspiration dans une région située le long du Tropique Sud, de la Polynésie à la côte Est Australienne, centrée sur la Nouvelle-Calédonie. Il est suivi d'une étude méthodologique de l'évaporation en régions semiarides de l'Australie du Sud. LES GRANDES ZONES climatiques de l'ensemble de la région étudiée sont déterminées par deux structures atmosphériques dynamiques, la Zone de Convergence Inter Tropicale au Nord et la Ceinture Anticyclonique SubTropicale, au Sud. Leurs déplacements périodiques en latitude définissent les climats locaux. L'ÉTUDE CLIMATOLOGIQUE de l'évapotranspiration montre les interactions entre l'évapotranspiration, les bilans énergétiques, les autres éléments du climat et les types de temps rattachés à des situations météorologiques identifiées. Elle met en évidence le rôle de l'advection. L'ÉTUDE MÉTÉOROLOGIQUE réalisée pour différents couverts végétaux, prairie sèche, association forêt claire à eucalyptus - buissons - sol nu, rizière, tente d'effectuer une comparaison entre des méthodes micrométéorologiques classiques et l'utilisation des isotopes naturels stables de l'eau pour suivre les mouvements de l'eau dans le continuum sol - plante - atmosphère. UN ESSAI de synthèse régionale à partir de bilans est proposé. THE WORK which is presented here first deals with climatic studies of evapotranspiration along the South Tropic, from Polynesia to the East coast of Australia. It focuses mainly on New-Caledonia. This study is followed by a methodological study of evapotranspiration in semi-arid areas of South Australia. CLIMATES of the whole region of our interest are governed both by the Inter Tropical Convergence Zone to the North and the Anticyclonic Belt to the South. Their periodic latitudinal movements determine the local climates. CIMATIC STUDIES of evapotranspiration have shown interactions between evapotranspiration, other climatic parameters and types of weather described by some typical meteorogical situations, they have shown also evidence of strong advection. METHODOLOGICAL STUDIES were carried out for various types of vegetation, dry grasslands, Eucalyptus - bush - bare soils associations, rice fields. They have made an attempt to compare classical micrometeorological methods with the use of natural stable isotopes of water to trace water movements in the soil - plant - atmosphere continuum. A REGIONAL SYNTHESIS bas been proposed based on hydrological budgets.

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