Abstract
The application of climate factors has become more common in urban drainage design. The
climate factor accounts for the expected increase in the magnitude of the extreme rainfall
events during the technical lifetime of the drainage system. The present practice in Denmark
is the application of climate factors of 1.2, 1.3 and 1.4 for 2-, 10- and 100-year events,
respectively. These estimates are based on a comparison between the ‘control’ and ‘scenario’
period simulated by the regional climate model, HIRHAM4. The present paper presents new
estimates of the climate factors on the basis of two new sources of data, focusing on a rainfall
duration of 60 minutes. Temporal development of observed extreme rainfall is described by a
parametric model and subsequently extrapolated, resulting in estimates of climate factors
between 2.3 and 2.5. A recent transient model simulation by the regional climate model
RACMO is divided into five time slices whereby their independent extreme rainfall
characteristics
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 12th International Conference on Urban Drainage |
| Publication date | 2011 |
| Publication status | Published - 2011 |
| Event | 12th International Conference on Urban Drainage - Porto Alegre, Brazil Duration: 11 Sept 2011 → 16 Sept 2011 Conference number: 12 http://www.acquacon.com.br/icud2011/en/ |
Conference
| Conference | 12th International Conference on Urban Drainage |
|---|---|
| Number | 12 |
| Country/Territory | Brazil |
| City | Porto Alegre |
| Period | 11/09/2011 → 16/09/2011 |
| Internet address |
Keywords
- Uncertainty
- Non-stationarity
- Extreme rainfall
- Regional climate models
- Climate factor
