Experimental measurements for improved understanding and simulation of snowmelt events in the Western Tatra Mountains

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Title:Experimental measurements for improved understanding and simulation of snowmelt events in the Western Tatra Mountains
Creators:
Krajčí, Pavel; krajci at uh dot savba dot sk; Institute of Hydrology, Slovak Academy of Sciences, Ondrašovská 17, Liptovský Mikuláš, Slovakia.
Danko, Michal; Institute of Hydrology, Slovak Academy of Sciences, Ondrašovská 17, Liptovský Mikuláš, Slovakia.
Hlavčo, Jozef ; Institute of Hydrology, Slovak Academy of Sciences, Ondrašovská 17, Liptovský Mikuláš, Slovakia.
Kostka, Zdeněk ; Institute of Hydrology, Slovak Academy of Sciences, Ondrašovská 17, Liptovský Mikuláš, Slovakia.
Holko, Ladislav; Institute of Hydrology, Slovak Academy of Sciences, Ondrašovská 17, Liptovský Mikuláš, Slovakia.
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 64, 4, pp. 316-328
Uncontrolled Keywords:snow accumulation and melt, snowmelt rate, snowmelt duration, mountains, snow lysimeter, MIKE-SHE

Abstract

Snow accumulation and melt are highly variable. Therefore, correct modeling of spatial variability of the snowmelt, timing and magnitude of catchment runoff still represents a challenge in mountain catchments for flood forecasting. The article presents the setup and results of detailed field measurements of snow related characteristics in a mountain microcatchment (area 59 000 m2, mean altitude 1509 m a. s. l.) in the Western Tatra Mountains, Slovakia obtained in winter 2015. Snow water equivalent (SWE) measurements at 27 points documented a very large spatial variability through the entire winter. For instance, range of the SWE values exceeded 500 mm at the end of the accumulation period (March 2015). Simple snow lysimeters indicated that variability of snowmelt and discharge measured at the catchment outlet corresponded well with the rise of air temperature above 0°C. Temperature measurements at soil surface were used to identify the snow cover duration at particular points. Snow melt duration was related to spatial distribution of snow cover and spatial patterns of snow radiation. Obtained data together with standard climatic data (precipitation and air temperature) were used to calibrate and validate the spatially distributed hydrological model MIKE-SHE. The spatial redistribution of input precipitation seems to be important for modeling even on such a small scale. Acceptable simulation of snow water equivalents and snow duration does not guarantee correct simulation of peakflow at shorttime (hourly) scale required for example in flood forecasting. Temporal variability of the stream discharge during the snowmelt period was simulated correctly, but the simulated discharge was overestimated.

Official URL: http://147.213.145.2/vc/vc1.asp

Title:Experimental measurements for improved understanding and simulation of snowmelt events in the Western Tatra Mountains
Translated title:Experimental measurements for improved understanding and simulation of snowmelt events in the Western Tatra Mountains
Creators:
Krajčí, Pavel; krajci at uh dot savba dot sk; Institute of Hydrology, Slovak Academy of Sciences, Ondrašovská 17, Liptovský Mikuláš, Slovakia.
Danko, Michal; Institute of Hydrology, Slovak Academy of Sciences, Ondrašovská 17, Liptovský Mikuláš, Slovakia.
Hlavčo, Jozef ; Institute of Hydrology, Slovak Academy of Sciences, Ondrašovská 17, Liptovský Mikuláš, Slovakia.
Kostka, Zdeněk ; Institute of Hydrology, Slovak Academy of Sciences, Ondrašovská 17, Liptovský Mikuláš, Slovakia.
Holko, Ladislav; Institute of Hydrology, Slovak Academy of Sciences, Ondrašovská 17, Liptovský Mikuláš, Slovakia.
Uncontrolled Keywords:snow accumulation and melt, snowmelt rate, snowmelt duration, mountains, snow lysimeter, MIKE-SHE
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:64
Number:4
Page Range:pp. 316-328
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:8674
Item Type:Article
Deposited On:10 Nov 2016 17:47
Last Modified:10 Nov 2016 16:47

Citation

Krajčí, Pavel; Danko, Michal; Hlavčo, Jozef; Kostka, Zdeněk; Holko, Ladislav (2016) Experimental measurements for improved understanding and simulation of snowmelt events in the Western Tatra Mountains. Journal of Hydrology and Hydromechanics, 64 (4). pp. 316-328. ISSN 0042-790X

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