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Periodical article Periodical article Leiden University catalogue Leiden University catalogue WorldCat catalogue WorldCat
Title:Evaluation of drought indices using the 40-percentile threshold for the north-central regions of Namibia
Author:Angombe, Simon T.
Periodical:Journal for Studies in Humanities and Social Sciences (ISSN 2026-7215)
Geographic term:Namibia
Abstract:This paper assesses drought conditions in five stations (Ombalantu, Oshakati, Rundu, Katima Mulilo and Tsumkwe) in northern Namibia. Drought assessment is important for farmers living in the area and also helps the government assess the state of drought conditions for implementing drought relief programs. The researcher used the rainfall decile method to assess drought conditions by evaluating whether the widely used 40-percentile threshold is appropriate for triggering a drought warning in Namibia. Results showed that the threshold might have been set too high to be of use in warning farmers of coming droughts. Apart from Katima Mulilo, where rainfall records from 1979 onwards were excluded from the analysis, the results show that much of the drought occurred towards the end of the 20th century. In addition, results showed a decrease in rainfall accumulation in Ombalantu and Oshakati. This is a serious problem in these areas since most of the people living there depend on agricultural products. Precautionary measures may be needed to adjust to this new situation, which opens up some important areas of future research. For example, information will be needed about how the economy will be affected, impacts on community and alternatives that can be found to adapt to the changing climate conditions of these two areas. Bibliogr., sum. [ASC Leiden abstract]