In: Journal of Hydrology and Hydromechanics, vol. 64, no. 4
Pavel Krajčí - Michal Danko - Jozef Hlavčo - Zdeněk Kostka - Ladislav Holko
Detaily:
Rok, strany: 2016, 316 - 328
Kľúčové slová:
Snow accumulation and melt; Snowmelt rate; Snowmelt duration; Mountains; Snow lysimeter; MIKE-SHE.
URL originálneho zdroja: http://www.ih.savba.sk/jhh
O článku:
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.
Ako citovať:
ISO 690:
Krajčí, P., Danko, M., Hlavčo, J., Kostka, Z., Holko, L. 2016. Experimental measurements for improved understanding and simulation of
snowmelt events in the Western Tatra Mountains. In Journal of Hydrology and Hydromechanics, vol. 64, no.4, pp. 316-328. 0042-790X (until 2019) .
APA:
Krajčí, P., Danko, M., Hlavčo, J., Kostka, Z., Holko, L. (2016). Experimental measurements for improved understanding and simulation of
snowmelt events in the Western Tatra Mountains. Journal of Hydrology and Hydromechanics, 64(4), 316-328. 0042-790X (until 2019) .