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Meteorology and Atmospheric Physics

, Volume 64, Issue 3–4, pp 243–254 | Cite as

Intra-seasonal climate variability of Madagascar. Part 2: Evolution of flood events

  • A. Nassor
  • M. R. Jury
Article

Summary

The meteorological structure of flood-producing weather systems affecting northern Madagascar is examined using ECMWF data. Daily rainfall in the austral summer is used to select 16 cases for a composite analysis of flood events in the period 1987–1992. Anomaly maps demonstrate a pair of convective vortices over SE Africa and the SW Indian Ocean which converge over northern Madagascar. Thermodynamic variables indicate an eastward shift of unstable moist conditions from SE Africa. A surge of monsoon northwesterlies and upper tropical easterlies are key features of flood producing systems over NW Madagascar.

Keywords

Climate Change Vortex Waste Water Water Pollution Indian Ocean 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1997

Authors and Affiliations

  • A. Nassor
    • 1
  • M. R. Jury
    • 2
  1. 1.Madagascar Meteorological ServicesAntananarivoMadagascar
  2. 2.Geography Department Climate Impact PredictionsUniversity of ZululandKwa DlangezwaSouth Africa

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