Global Precipitation Climatology Project
GPCP task was to estimate precipitation using satellites that was global including places where people were not present to take measurements. Secondarily the project was tasked with studying regional precipitation on seasonal to between year time scales. As the study period of the project increased past 25 years a third objective was added analyze long-term variation, such as that caused by global warming. Also, in a renewed effort for better data and with more observation satellites, the GPCP, hopes to gain insights to rainfall variation on 'weather'-scale, or 4-hour periods to daily time scales.