This research was designed to develop a better understanding of fine scale climate variability by focusing on the spatial and temporal distribution of winter precipitation anomalies within smaller sub-regions of the Southwest. Using the North American Regional Reanalysis data set, researchers analyzed differences between hypothesized controlling atmospheric variables under contrasting intra- and inter-seasonal variability for a set of key sub-regions. Researchers also identified the leading causes of the observed patterns in fine-scale precipitation anomalie
