HR: 0830h
AN: NG51A-0822    [PDF]
TI: Study of the Space-Time Variability of the Precipitations in the semi Arid Tropics Areas like African Sahel
AU: * Ladoy, P
AF: ACMAD, BP 13184, Niamey, Niger Niger
AB: One of the difficulty of decision making in the matter of climate in semi arid tropics areas like African Sahel, is to manage the high time space variability of the atmospheric fields. For example, the high time space variability of the rain fields (intermittency) is explained by the multiplicity of time space scales which involves. A multifractal approach of the field is assumed. Some aspects of the study are related to : o Down scaling adaptations of the outputs of global climate models to regional and local scales; o Prediction of extremes events : floods, droughts or "dry spells". Studies are developed by the African Centre for Meteorological Application for Development (ACMAD) This Centre, located in Niamey, Niger, acts as an African institution for weather and climate. Its long term goals are to : - reduce the dryness effects or any other catastrophe related to the climatic conditions such as the tropical cyclone, the floods and the storms; - to develop methodologies and techniques for weather and climate application at the national and sub-regional level; The basic activities to realize this objectives are: - the collection and analysis of hydrometeorological data; - the dissemination of climatic information for the early alarm in the fields related to the agriculture or the management of resources in water and energy; - the dissemination in due time of useful information on the weather and climate; - the connected of the variability and of the climatic change, and such as their impact upon the economy, - the development of strategies of appropriate responses to the impact of the desertification, floods, tropical cyclones,
UR: http://www.acmad.ne
DE: 3309 Climatology (1620)
DE: 3354 Precipitation (1854)
DE: 3374 Tropical meteorology
DE: 6309 Decision making under uncertainty
DE: 6319 Institutions
SC: Nonlinear Geophysics [NG]
MN: 2003 Fall Meeting