Field

GPCP v1.3 precipitation
gettextattall: warning: attribute history longer than string 100000 405495 , not read warning: irregular time axis Global Precipitation Climatatology Project (GPCP) Climate Data Record (CDR), Daily V1.3
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 180 -1.00° steps, first point at 89.50° N, last point at 89.50° S

1-daily data available from 01Oct1996 to 31May2020 ( 8662 times)
Variable precip (NOAA Climate Data Record (CDR) of Daily GPCP Satellite-Gauge Combined Precipitation) in mm/dy
Full metadata.

Get grid points, average area or generate subset

Mask:	no mask mask1.txt mask6.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
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 monthly 10-daily 5-daily
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:	-day running mean
Missing data:	ignore, climatology, trend, persistence.

Create a field with lower spatial resolution

Average over blocks of longitude and latitude grid cells

Please consider downloading this field from the authoritative site.
If you really want to get it here, GPCP v1.3 precipitation is available as a netcdf file (size 1060.95 MB).