Journal
HYDROLOGY AND EARTH SYSTEM SCIENCES
Volume 21, Issue 5, Pages 2463-2481Publisher
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/hess-21-2463-2017
Keywords
-
Categories
Funding
- German Federal Ministry of Education and Research (BMBF) through measure Smart and Multifunctional Infrastructural Systems for Sustainable Water Supply, Sanitation and Stormwater Management (INIS)
Ask authors/readers for more resources
Parametric distribution functions are commonly used to model precipitation amounts corresponding to different durations. The precipitation amounts themselves are crucial for stochastic rainfall generators and weather generators. Nonparametric kernel density estimates (KDEs) offer a more flexible way to model precipitation amounts. As already stated in their name, these models do not exhibit parameters that can be easily regionalized to run rainfall generators at ungauged locations as well as at gauged locations. To overcome this deficiency, we present a new interpolation scheme for nonparametric models and evaluate it for different temporal resolutions ranging from hourly to monthly. During the evaluation, the nonparametric methods are compared to commonly used parametric models like the twoparameter gamma and the mixed-exponential distribution. As water volume is considered to be an essential parameter for applications like flood modeling, a Lorenz-curve-based criterion is also introduced. To add value to the estimation of data at sub-daily resolutions, we incorporated the plentiful daily measurements in the interpolation scheme, and this idea was evaluated. The study region is the federal state of BadenWurttemberg in the southwest of Germany with more than 500 rain gauges. The validation results show that the newly proposed nonparametric interpolation scheme provides reasonable results and that the incorporation of daily values in the regionalization of sub- daily models is very beneficial.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available