![]() ![]() Some people have been claiming that the anomalous snow this winter is due to warming temperatures. The map below shows the “normal” snow extent measured since 1966. We see southern snow cover this year in places like Greece, Northern China, and Alabama that are not normally covered with snow in mid-February. Source : Rutgers University Global Climate Lab The implication of the observed trend towards increasing snow extent is that the Northern Hemisphere autumn/winter snow line is moving southwards over the last ten to twenty years. Snow cover radiates out from the pole, so the only place where snow extent can increase is towards the south. It appears that this month will achieve snow extent among the top two Februaries on record.Īs you can see in the Rutgers University maps below for mid-February, the excess snow cover is necessarily found at lower latitudes. As we have been discussing on WUWT, three of the last four months have seen top ten Northern Hemisphere snow extent s and the decadal trend has been towards increasing (and above normal) snow extent during the autumn and winter.
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