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Field

GPCC #gauges
GPCC Full Data Monthly Product Version 2022, precipitation in mm/month, 0.5 degree
X axis: whole world in 720 0.50° steps, first point at 179.75° W, last point at 179.75° E
Y axis: regular grid with 360 -0.50° steps, first point at 89.75° N, last point at 89.75° S

Monthly data available from Jan1891 to Dec2020 (1560 months)
Variable numgauge (gpcc full data monthly product version 2022, number of stations per grid) in gauges per gridcell
Full metadata.

Get grid points, average area or generate subset

Mask:	no mask   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:	-month running mean with direction backward centred forward
Then apply new time scale:	keep same 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 #gauges
Minimum:	% valid data
Threshold:	no cut less than greater than gauges per gridcell 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 "numgauge" 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, GPCC #gauges is available as a netcdf file (size 47.5263 MB).

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