Generally when do glaciers advance downward, causing further erosional landforms? is it in the colder months like in november and december or all year long?

During colder months

Explanation:

It is during the colder months that glaciers advance downward, causing further erosional landforms. The movement of glaciers receives the name of "glacial movement." Glaciers usually move because of the pressure of their own weight. This means that during the winter months, when snowfall increases, glaciers get heavier due to the pressure of the snow. This causes them to deform and flow, which leads to the alteration of the landscape.

north atlantic treaty organization.