Vanishing river ice cover in the lower part of the Danube basin - signs of a changing climate.

A slightly increasing trend (~99.4 m 3 /s/decade) is observed for the minimum winter discharge (the lowest daily discharge throughout the winter months (December-January-February)), in the second part of the 20 th century (Fig. 5a ).

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At NH scale, there is an overall trend towards later ice freeze (~0.57 days/decade) and earlier ice breakup (~0.63 days/decade) 6 .

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