Daily precipitation graphics are produced using the CPC MORPHing technique (CMORPH) on
a global basis from 60oN-60oS. Data resolution is approximately 8km and the
24-hour product is a resultant accumulation of 30 minute segments. Data inputs include
half-hourly geostationary satellite infrared temperature fields along with
irregular-interval polar orbiting satellite microwave brightness temperature retrievals.
The morphing process involves using the relatively poor temporal resolution microwave
precipitation estimate data and interpolating its movement between retrieval periods.
For further information, see: http://www.cpc.ncep.noaa.gov/products/janowiak/cmorph.html