Blurring the Line Between Rain and Snow: The Limits of Meteorological Classification

Blurring the Line Between Rain and Snow: The Limits of Meteorological Classification

A new study published in Nature Communications utilizes insights gleaned from DRI’s Mountain Rain or Snow project to evaluate why traditional weather forecasting struggles to identify the rain/snow transition line. The research was possible because thousands of community members across the U.S. contributed more than 40 thousand observations of the type of precipitation falling at their location.

Volunteer Scientists Validate Rain and Snow Estimates

Volunteer Scientists Validate Rain and Snow Estimates

DRI scientists Guo Yu, Meghan Collins, Monica Arienzo, and Anne Heggli co-authored a new study that examines how Mountain Rain or Snow is helping improve weather forecasting models. The citizen science project collects observations of precipitation from community volunteers across the country to further scientific understanding of the environmental variables impacting where precipitation falls as either rain or snow. This information is critical for informing avalanche forecasting, road safety, and water resources management.

A Fresh Look at the Drivers of Extreme Flooding

A Fresh Look at the Drivers of Extreme Flooding

A new study in Science Advances finds that compounding effects of flood drivers can complicate and exacerbate the risk of extreme floods in watersheds around the world. DRI’s Guo Yu, Ph.D., assistant research professor of hydrometeorology, co-authored the research.

Preparing for the Floods That Follow the Fires

Preparing for the Floods That Follow the Fires

A conversation with Guo Yu and Jeremy Giovando about their new research examining post-fire flood frequency. The study expands on previous frameworks to account for the compounding impacts of repeated wildfires on flood risk, using a southern California watershed as a case study.