Abstract
An improvement of Manning's analysis of rainfall reliability is presented. Confidence limits of 20-day rainfall totals are calculated with a simple normalizing transformation. Rainfall distribution within a 20-day period is assessed by simply counting the frequency of occurrence of dry spells exceeding 10 days duration. The joint probability of deficient 20-day rainfall total and dry spell occurrence is estimated. The analysis is applied to two practical examples in Cameroon, including the semi-arid northern area. ADDITIONAL ABSTRACT: An improvement of Manning's analysis of rainfall reliability is presented. Confidence limits of 20-day rainfall totals were calculated with a simple normalizing transformation. Rainfall distribution within a 20-day period was assessed by simply counting the frequency of occurrence of dry spells exceeding 10 days duration. The joint probability of deficient 20-day rainfall total and dry spell occurrence was estimated. The analysis was applied to 2 practical examples in Cameroon. (Abstract retrieved from CAB Abstracts by CABI’s permission)
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