This is the 17360th most frequent Russian word.
таяние
Melting or thawing.
In this sentence, 'таяние' refers to the melting (process of thawing) of snow during the transition from winter to spring.
Таяние снега началось раньше, чем обычно.
The melting of snow started earlier than usual.
Here, 'таяние' is used to describe the melting process of glaciers, which relates to climatological phenomena.
Учёные изучают таяние ледников.
Scientists are studying the melting of glaciers.
In this context, 'таяние' is used to signify the phenomenon of ice thawing (melting) on the river's surface.