Developing and Testing a Drought Early Warning Product in the South-Central United States

Drought is a common result of climate variability in the south-central United States. With increasing temperatures and more variable precipitation patterns expected in the future, drought will continue to stress water quantity and quality in this region. University of Oklahoma researchers have demonstrated that the Palmer Drought Severity Index (PDSI), a measure of long-term drought conditions, can help predict drought patterns at multi-county scales in south-central Oklahoma. The model forecasts future PDSI using larger-scale climate drivers, commonly referred to as “teleconnections,” such as the El Niño-Southern Oscillation, Pacific Decadal Oscillation, and Atlantic Multidecadal Oscillation. These teleconnections influence precipitation [...]