Calibration
; Catchments
; Precipitation (meteorology)
; Random number generation
; Random processes
; Runoff
; Stochastic systems
; Time series
; Climate change scenarios
; Climate impact assessment
; Daily precipitations
; Extreme precipitation
; Precipitation characteristics
; Precipitation time series
; Spatiotemporal correlation
; Statistical downscaling
; Climate change
; climate effect
; diurnal variation
; future prospect
; implementation process
; model validation
; precipitation intensity
; Richardson number
; river basin
; spatiotemporal analysis
; time series
; Alpine County
; California
; Switzerland
; United States
英文摘要:
Many climate impact assessments require high-resolution precipitation time series that have a spatio-temporal correlation structure consistent with observations, for simulating either current or future climate conditions. In this respect, weather generators (WGs) designed and calibrated for multiple sites are an appealing statistical downscaling technique to stochastically simulate multiple realisations of possible future time series consistent with the local precipitation characteristics and their expected future changes. In this study, we present the implementation and validation of a multi-site daily precipitation generator re-built after the methodology described in Wilks (1998). The generator consists of several Richardson-type WGs run with spatially correlated random number streams. This study aims at investigating the capabilities, the added value and the limitations of the precipitation generator for a typical Alpine river catchment in the Swiss Alpine region under current climate.
Federal Office of Meteorology and Climatology MeteoSwiss, Operation Center 1, 8085 Zurich-Airport, Switzerland; Institute for Atmospheric and Climate Science, ETH Zurich, Universitaetstrasse 16, 8092 Zurich, Switzerland; Center for Climate Systems Modeling (C2SM), ETH Zurich, Universitaetstrasse 16, 8092 Zurich, Switzerland
Recommended Citation:
Keller D,E,, Fischer A,et al. Implementation and validation of a Wilks-type multi-site daily precipitation generator over a typical Alpine river catchment[J]. Hydrology and Earth System Sciences,2015-01-01,19(5)