Increased snowfall advances a glacier's extent, while increased melting
forces glacial retreat.
Not exact matches
More information: Jonathan L. Baker et al, Holocene warming in western continental Eurasia driven by
glacial retreat and greenhouse
forcing, Nature Geoscience (2017).
In any case, you need to explain why most
glacial retreat (where records are available) began about 1850, well before C02 could be considered a dominant climate
forcing.
There is no rule that one and only one
forcing will govern
glacial retreat.