MODIS snowline elevation changes during snowmelt runoff events in Europe

Title:

MODIS snowline elevation changes during snowmelt runoff events in Europe

Creator:

Parajka, Juraj, Bezak, Nejc, Burkhart, John, Hauksson, Bjarki, Holko, Ladislav, Hundecha, Yeshewa, Jenicek, Michal, Krajčí, Pavel, Mangini, Walter, Molnar, Peter, Riboust, Philippe, Rizzi, Jonathan, Sensoy, Aynur, Thirel, Guillaume, and Viglione, Alberto

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:c56497e5-502a-4d76-a178-2cd2f0a8df4c
uuid:c56497e5-502a-4d76-a178-2cd2f0a8df4c
doi:10.2478/johh-2018-0011

Subject:

MODIS, snowmelt, runoff events, Europe, and snowline elevation

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

This study evaluates MODIS snow cover characteristics for large number of snowmelt runoff events in 145 catchments from 9 countries in Europe. The analysis is based on open discharge daily time series from the Global Runoff Data Center database and daily MODIS snow cover data. Runoff events are identified by a base flow separation approach. The MODIS snow cover characteristics are derived from Terra 500 m observations (MOD10A1 dataset, V005) in the period 2000–2015 and include snow cover area, cloud coverage, regional snowline elevation (RSLE) and its changes during the snowmelt runoff events. The snowmelt events are identified by using estimated RSLE changes during a runoff event. The results indicate that in the majority of catchments there are between 3 and 6 snowmelt runoff events per year. The mean duration between the start and peak of snowmelt runoff events is about 3 days and the proportion of snowmelt events in all runoff events tends to increase with the maximum elevation of catchments. Clouds limit the estimation of snow cover area and RSLE, particularly for dates of runoff peaks. In most of the catchments, the median of cloud coverage during runoff peaks is larger than 80%. The mean minimum RSLE, which represents the conditions at the beginning of snowmelt events, is situated approximately at the mean catchment elevation. It means that snowmelt events do not start only during maximum snow cover conditions, but also after this maximum. The mean RSLE during snowmelt peaks is on average 170 m lower than at the start of the snowmelt events, but there is a large regional variability.

Language:

Slovak

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Source:

Journal of hydrology and hydromechanics | 2019 Volume:67 | Number:1

Harvested from:

CDK

Metadata only:

false