Theoretical sunshine duration in hours on 21. December, 21 January to 21 June. Calculation based on the digital surface model Tirol Grid 1 meter, recording period 2008 to 2013 (valley rooms in northern Tyrol). Calculation of the daily sums of the (theoretical) solar duration in 10-minute modelling of the sunrise, taking into account remote and near shadowing (buildings, high vegetation). The grid dataset “Sonnenscheindauer 2013 Tirol” is associated with the INSPIRE data topic Energy sources (Annex III).
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