Water Stewardship Information Sources

Citation Burn, DH et al. 2011. Trends and variability in extreme rainfall events in British Columbia. Canadian Water Resources Journal 36: 67-82.
Organization University of Waterloo
URL http://www.tandfonline.com/doi/abs/10.4296/cwrj3601067
Abstract/Description or Keywords This paper analyzes hourly rainfall data from a collection of tipping bucket rain gauges in British Columbia. The hourly rainfall data are used to define peaks over threshold (POT) rainfall events for durations of 1, 2, 6, 12 and 24 hours. This database is then used to define, on an annual basis, the number of over threshold events, the average magnitude of the over threshold events, and the largest over threshold event. Trend analysis is conducted for these three variables for each duration and for several common analysis periods drawn from the period 1966 to 2005. The identification and estimation of trends is conducted using the Mann-Kendall nonparametric test for trend. The global, or field, significance of the trend results is established using a bootstrap resampling approach. The research reveals generally increasing trends in extreme rainfall, especially for the summer season and for the short duration rainfall events.
Information Type article
Regional Watershed Province
Sub-watershed if known
Aquifer #
Comments
Project status complete
Contact Name Paul Whitfield
Contact Email [email protected]