Climate Data Record (CDR) of Northern Hemisphere (NH) Snow Cover Extent (SCE) (CDR Name: Snow_Cover_Extent_NH_IMS_Robinson)
X axis: whole world in 360 1.00° steps, first point at 89.50° W, last point at 269.50° E
Y axis: regular grid with 80 1.00° steps, first point at 10.50° N, last point at 89.50° N

Monthly data available from Jan1966 to Dec2019 ( 648 months)
Variable snow_cover_extent (monthly mean of daily NOAA/NCDC Climate Data Record of snow cover extent) in
Full metadata.

Get grid points, average area or generate subset

Mask:	no mask mask10.txt   add a mask to the list
Latitude:	°N - °N
Longitude:	°E - °E
Boundaries:	halfway grid points interpolated
Make:	average max min set of grid points subset of the field
Demand at least:	% valid points in this region

Create a field with lower time resolution

New time scale:	annual (Jul-Jun) annual (Jan-Dec) biannual seasonal
New variable:	mean sd sum sum above sum below number min time of min max time of max first time last time of snowcover
Threshold:	no cut less than greater than absolute value percentile normal 1971-2000
Minimum:	% valid data
First apply:	-month running mean
Missing data:	ignore, climatology, trend, persistence.

Create a field with lower spatial resolution

Average over blocks of longitude and latitude grid cells

Construct a statistical forecast model from this field

Rutgers University does not allow us to redistribute this file. Please contact Thomas Estilow for access to these data.