Calibration of snow parameters in SWAT: comparison of three approaches in the Upper Adige River basin (Italy)

Ye Tuo, Giorgia Marcolini, Markus Disse, Gabriele Chiogna

Research output: Contribution to journalComment/debate

25 Scopus citations

Abstract

The Soil and Water Assessment Tool (SWAT) model is generally applied in alpine catchments using a unique set of snow parameters for the entire basin, and calibration is based on discharge records only. This technical note presents three calibration procedures for snow parameters of SWAT considering snow water equivalent (SWE) values computed using a dense network of snow depth measurement stations available in the Upper Adige River basin, Italy. The first two procedures calibrate snow parameters according to the average sub-basin SWE: the first one defines a unique set of parameters for the entire basin, while the second allows for sub-basin variability. The last approach includes the elevation band SWE output in the calibration for each sub-basin and qualitatively compares it to the SWE computed from the available snow depth monitoring stations. This last method provides the best agreement between SWAT model results and SWE data.

Original languageEnglish
Pages (from-to)657-678
Number of pages22
JournalHydrological Sciences Journal
Volume63
Issue number4
DOIs
StatePublished - 12 Mar 2018

Keywords

  • Adige
  • Alpine catchment
  • Italy
  • SWAT model
  • snow water equivalent

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