Grid Resolution: 0.25 degrees lat/lon
Domain: Global

These estimates are daily composites of all available passive microwave precipitation estimates from the AMSU-B instrument. Currently, AMSU-B is aboard three NOAA polar orbiters (NOAA-15, -16 & -17) which have approximate observing times (at the equator) of 0700/1900, 0200/1400, and 1000/2200 LST, respectively. These estimates are generated by NOAA/NESDIS using the following published algorithm:

Ferraro, R.R., F. Weng, N. Grody, L. Zhao, H. Meng, C. Kongoli, P. Pellegrino, S. Qiu and C. Dean, 2005: NOAA operational hydrological products derived from the AMSU. IEEE Trans. Geo. Rem. Sens., 43, 1036 – 1049