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REPRESENTATION OF DAILY RAINFALL DISTRIBUTIONS USING NORMALIZED RAINFALL CURVES

✍ Scribed by JOLLIFFE, IAN T.; HOPE, PETER B.

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
379 KB
Volume
16
Category
Article
ISSN
0899-8418

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✦ Synopsis

For daily rainfall the normalized rainfall curve (NRC) provides a plot of the cumulative percentage of rain days 6 ) against the cumulative percentage of rain amount (x). It is not immediately clear whether the equations that have been widely used to represent the relationship between x and y correspond to a valid probability distribution for daily rainfall amounts. We show that such distributions exist, but that they are truncated, i.e. not all positive values of rainfall have non-zero probability. In practice, the truncation may not be too important, but the form of the equations relating x and y is also determined for a number of wellknown probability distributions that are not truncated. The fit of the corresponding NRCs to some published rainfall data is examined.

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