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Recent changes in dry spell and extreme rainfall events in Ethiopia

2005; Springer Science+Business Media; Volume: 83; Issue: 1-4 Linguagem: Inglês

10.1007/s00704-005-0134-3

1434-4483

Yilma Seleshi, Pierre Camberlin,

Precipitation Measurement and Analysis

This paper assesses recent changes in extremes of seasonal rainfall in Ethiopia based on daily rainfall data for 11 key stations over the period 1965–2002. The seasons considered are Kiremt (‘main rains’, June–September) and Belg (‘small rains’, February/March–May). The Mann-Kendall and linear regression trend tests show decreasing trends in the Kiremt and the Belg extreme intensity and maximum consecutive 5-day rains over eastern, southwestern and southern parts of Ethiopia whereas no trends are found in the remaining part of Ethiopia. In general, no trends are found in the yearly maximum length of Kiremt and Belg dry spells (days with rainfall below 1 mm) over Ethiopia.