Analysis of Snow Climatology

How this map was made:

Since exact dates, rather than months, delimit the snow accumulation season, the technique to generate these statistics incorporated whole month and partial-month snowfall totals. Whole month snowfall totals (Dec., Jan., Feb.) could be used for all stations, however a weighted fraction of the monthly snowfall was used when the onset and/or end date fell within a month. This fraction was based on the number of days in a particular month that was included in the snow accumulation season. Therefore, since the snow accumulation season is variable throughout the state, snowfall totals must be compiled from unequal time periods for each station.

For each value of total snowfall over the snow accumulation season, one gridded map was generated based on the individual station observations using a kriging technique. Means for a given period length were then computed based for each gridpoint value rather than a per-station basis. This sequence allows for use of all possible data in a given year.