Noah Brauer - February 24

Weather and Climate Systems Seminar

Classification and Quantification of Ice-phase Microphysics in Eastern United States

Snowfall Events Using Ground and Satellite-borne Radar Retrievals

Noah Brauer

Wednesday, February 24th

2:00 pm

Join Google Meet:

https://meet.google.com/ohy-ncjo-nnp

Four different snowfall events were analyzed by looking at retrievals from the GPM DPR, the WSR-88D ground radar network, and the ground validation (GV) dataset. The snowfall events were categorized as being (1) shallow, convective events in the absence of large-scale forcing for ascent, and (2) deep, widespread events that are driven by features such as cyclones and fronts. While both event classifications exhibited signatures of low-level ice crystal growth via aggregation and/or riming, the GPM DPR observed greater ice crystal growth in the deep large-scale events. The GPM GV network matchups and the ground radar observations indicated that the DPR is likely undersampling the snowfall rates and ice crystal growth in the shallow convective systems. Along-track echo top heights were also analyzed for each case, and deep synoptically-forced events experienced a greater variance in echo top heights compared to the shallow events which had a relatively uniform distribution.”