Seasonality in European red dust/"blood" rain events

A new, more comprehensive red-dust-rain event archive consisting of a listing of 549 colored-rain cases across all of Europe, including specific month/day/year occurrence, is assembled. Analysis of the spatially and temporally extensive dataset of 549 events suggests that colored-rain events can occur throughout the year across Europe, but do demonstrate seasonality. To demonstrate the specific path of that transport, the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model was employed to compute back-trajectories using gridded data from the NCEP/NCAR Reanalysis dataset. It was found that Central Europe tends toward a bimodal seasonal distribution, with the majority of its events occurring in spring and autumn. The parcel's vertical assent is found to be one of the most significant aspects of the dust transport.