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Field

NSIDC freeze depth
Arctic EASE-grid Freeze and Thaw Depths
X axis: whole world in 360 1.00° steps, first point at 0.50° E, last point at 359.50° E
Y axis: regular grid with 90 1.00° steps, first point at 0.50° N, last point at 89.50° N
Z at 1000.00
Yearly data available from 1901 to 2001 ( 101 years)
Variable frz (freeze depth) in m
Full metadata.

Get grid points, average area or generate subset

Mask:	no mask mask2.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

First fill missing data:	ignore, climatology, trend, persistence.
Then apply:	- running mean with direction backward centred forward
Then apply new time scale:	keep same time scale annual (Jul-Jun) annual (Jan-Dec)
New variable:	mean sd sum sum above sum below number min time of min max time of max first time last time of freeze depth
Minimum:	% valid data
Threshold:	no cut less than greater than m percentile normal 1971-2000

Create a field with lower spatial resolution

Average over blocks of longitude and latitude grid cells

getfieldtype: please ask the administrator to add "frz" to the lists in getfieldtype

Construct a statistical forecast model from this field

Please consider downloading this field from the authoritative site.
If you really want to get it here, NSIDC freeze depth is available as GrADS .ctl and gzipped .dat files (size 3.34517 MB)
Alternatively, you can generate a netCDF file of the same size.

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