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Using satellite snow data in hydrological forecasting

| 2026:1211 | Panu Juntunen, Juho Jakkila and Kalle Sippel at the Finnish Environment Institute (Syke)
Snow has an important role for hydrology in the northern hemisphere and, the snow layer accumulated during winter can significantly affect spring flood volume. The snow component in hydrological models always has some uncertainty, and snow observation data can be used to estimate snow water equivalent more accurately. The study shows that satellite data can improve simulation accuracy under certain conditions. However, using satellite observation requires careful consideration of data reliability.
2026-1211

The snow component in hydrological models always has some uncertainty, and snow observation data can be used to estimate snow water equivalent more accurately. Adequate ground-based observations are rarely available, but satellite-based snow estimates can cover the area of interest even at daily intervals.

In this project study, satellite-based snow water equivalent and snow-covered area data was used to calibrate the WSFS model’s coverage of the lower part of the Klarälven River. Satellite data was also used to update snow simulation in spring flood forecasts during the snow-covered season of 2022.

Rapporter och publikationer

Här listas rapporter och resultatblad från programmet.

    • Rapport

    Using satellite snow data in hydrological forecasting

    Snow has an important role for hydrology in the northern hemisphere and, the snow layer accumulated during winter can significantly affect spring flood volume. The snow component in hydrological models always has some uncertainty, and snow observation data can be used to estimate snow water equivalent more accurately. The study shows that satellite data can improve simulation accuracy under certain conditions. However, using satellite observation requires careful consideration of data reliability.

    |2026:1211Panu Juntunen, Juho Jakkila and Kalle Sippel at the Finnish Environment Institute (Syke)
    2026-1211
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    Distributed hydrological model system ENKI in Umeälven

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    |2023:980Oddbjørn Bruland
    ENKI in UME
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    The Energy Balance Method - A Literature Review 2022-906

    This review is an evaluation of snowmelt models relevant for inflow forecasting for hydropower production. All studies included in this literature review find that including elements from the energy-balance model, one way or another, improves the snowmelt calculations compared to the simple degree-day model. The major improvements are visible on the diurnal variation of snowmelt.

    |2022:906Oddbjørn Bruland
    Bild 2022 906
    • Rapport

    Klimat, vattentillgång och höga flöden i Sverige 1860–2020 2022-902

    Den här rapporten beskriver långtidsvariationen i nederbörd, temperatur, vattentillgång och höga flöden i Sverige under perioden 1860–2020, med särskild tonvikt på frågeställningar av betydelse för vattenkraftindustrin. Utgångspunkten för studien är regionala serier för tillrinningsområdena till de fyra havsbassängerna Bottenviken, Bottenhavet, egentliga Östersjön och Västerhavet.

    |2022:902Göran Lindström
    800X424