The science is pretty clear, jopo, but, being jopo, you have...

The science is pretty clear, jopo,
but, being jopo, you have managed to go to rutgers as a source, and make your own contrary "interpretation"

but then, jopo would see black when there was white

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you see less change in mid winter, because it is cold then regardless

at spring NH apr-jun, you see the encroachment of warmer temps reducing snow extent



https://nsidc.org/cryosphere/sotc/snow_extent.html

Long-term Northern Hemisphere snow trends are somewhat mixed, but overall show decreases in metrics such as snow cover extent, snow water equivalent, and snow depth (Kunkel et al. 2016). Findings include a negative trend in maximum seasonal snow depth between the winter of 1960-1961 and the winter of 2014-2015. The trend is especially strong in North America, and apparent to a lesser extent in European stations discussed in the study.