The building maintenance scheduled for Friday February 27th at 5:00pm MST has been postponed until 5:00pm March 6th. PSD's website will be down during the maintenance.

Automated Atmospheric River Detection


An automated technique has been developed to objectively identify and characterize atmospheric river events in satellite-derived and model-based fields of integrated water vapor (IWV) content. The technique is fundamentally based on criteria for the length, width, and core IWV content of features initially defined by Ralph et al. 2004. While atmospheric river events are fundamentally characterized by their water vapor transport, use of the technique facilitates direct assessment of model based forecasts. A manuscript describing the procedure has been submitted to IEEE Transactions on Geoscience and Remote Sensing.

Application of the Automated Technique

Real-time Application to Satellite-Derived IWV Data
Application to Current GFS Forecast Fields
Comparison of GFS Forecast Fields with Recent Observations