 This paper examines the accuracy of satellite-based precipitation estimates in the Peruvian Andes and analyzes how the resolution of the estimates affects their accuracy. It finds that the tropical rainfall measuring missions, TRMM, multi-satellite precipitation analysis, TMPA, can accurately estimate precipitation rates at daily 0.25 degrees x 0.25 degrees scales in the region, though it tends to underestimate precipitation intensity. Additionally, the paper finds that increasing the temporal resolution of the estimates improves their accuracy, as does decreasing the spatial resolution. Finally, the paper proposes a method for combining TMPA estimates with ground-based observations to improve their accuracy. This article was authored by M. L. M. Schiel, M. Rohrer, C. H. Huggjall, and others.