Field

GPCP v2.3 precipitation
Global Precipitation Climatatology Project (GPCP) Climate Data Record (CDR), Monthly V2.3
X axis: whole world in 144 2.50° steps, first point at 1.25° E, last point at 358.75° E
Y axis: regular grid with 72 -2.50° steps, first point at 88.75° N, last point at 88.75° S

Monthly data available from Jan1979 to Jun2021 ( 510 months)
Variable precip (NOAA Climate Data Record (CDR) of Monthly GPCP Satellite-Gauge Combined Precipitation) in mm/dy
Full metadata. Cannot locate the land/sea mask file

Get grid points, average area or generate subset

Mask:	no mask mask4.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
Considering:	everything land points sea points show/hide more only land points only sea points not land points not sea points
Units:	convert to mm/day leave in mm/dy

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 precipitation
Threshold:	no cut less than greater than mm/dy 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

Please consider downloading this field from the authoritative site.
If you really want to get it here, GPCP v2.3 precipitation is available as a netcdf file (size 20.2785 MB).

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