1. Climatological data
At our disposal we have precipitation observation recorded at different intervals (10 min, 1 hour, 1 day, as well as multiples of it). Which temporal resolution as well as time period (1864 - today, 1901 - today, 1961 - today ) to use for what analysis will be decided within the project.
The project will make various extreme value analyses at rain gauges available, ranging from simple return level plots to intensity-duration-frequency diagrams. To this end we implement and refine the latest statistical methods. Hence we can give confidence intervals to the estimates, which are not supplied in the "blue books". This is of relevance, since in the context of extreme value statistics confidence intervals tend to be large, especially for long return period.
The goal is to design, in an intensive exchange with the users, a web platform, capable of development.This web platform will replace the "blue books" and can be updated without any problems.
4. Longterm plan
Within the two-year project only elementary needs of the users can be addressed. An important objective consists in drafting a plan for the continuation of the service and the extension of the web platform. Next to customer service and maintenance, new ways of extreme value analysis will be contemplated. Regionalisation of results at any location in Switzerland and development of extreme value statistics for spatial means (e.g. of catchment areas) are matters of particular interest.