Intensity and frequency of extreme rainfall are expected to change in future due to anthropogenic climate change; however, this change may not be uniform across spatial and temporal scale. This paper examines the trends of sub-hourly, sub-daily and daily extreme rainfall events from 38 rainfall stations located in southeast Australia. Two non-parametric tests (Mann–Kendall and Spearman Rho) were applied to detect trends at 10, 5 and 1% significance levels. The sub-hourly (6, 12, 18 and 30 min) and sub-daily (1, 2 and 6 h) annual maximum rainfall events generally showed an upward (positive) trend. However, the longer duration rainfall events (12–72 h) generally showed a downward (negative) trend. It was found that stations showing positive trends were characterized by higher elevations compared with the stations showing negative trends. This finding has important implications for urban stormwater management in the near future as most urban stormwater systems operate on a smaller catchment scale where sub-hourly and sub-daily rainfall events are used in their design.
Skip Nav Destination
Article navigation
Research Article|
July 16 2014
Trends in sub-hourly, sub-daily and daily extreme rainfall events in eastern Australia
Orpita U. Laz;
Ataur Rahman;
Ataur Rahman
2University of Western Sydney, Australia
Search for other works by this author on:
Abdullah Yilmaz;
Abdullah Yilmaz
3Victoria University, Australia
Search for other works by this author on:
Khaled Haddad
Khaled Haddad
2University of Western Sydney, Australia
Search for other works by this author on:
Journal of Water and Climate Change (2014) 5 (4): 667–675.
Article history
Received:
March 21 2014
Accepted:
June 21 2014
Citation
Orpita U. Laz, Ataur Rahman, Abdullah Yilmaz, Khaled Haddad; Trends in sub-hourly, sub-daily and daily extreme rainfall events in eastern Australia. Journal of Water and Climate Change 1 December 2014; 5 (4): 667–675. doi: https://doi.org/10.2166/wcc.2014.035
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Could not validate captcha. Please try again.
eBook
Pay-Per-View Access
$38.00