The featured chart looks at the probability of having snow cover on a day during the winter contingent on having snow cover for a given date. Confused? In other words, if there is snow cover for this date, how likely was there also snow cover on March 1rst or December 25th of that same winter. One of the disappointing aspects of the chart are the clear month boundary effects as often the data was manually quality controlled a month at a time (the end of one month doesn't match the beginning of the next). The second week of March shows up nicely as an elevated chance of snow cover, but those events can then be associated with elevated probabilities in mid January.

Voting:
Good = 30
Bad = 26

Tags:   snowcover   climate