Dr. Ivan Arias Hernandez - 10 October 2023

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Seminar Series Webpage:
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TITLE: Insight into the microphysics of severe storms from multiple radar observations: Study over la Plata region in South America

SPEAKER: Dr. Ivan Arias Hernandez - Colorado State University

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ABSTRACT: The microphysics of severe weather is studied using a network approach from multiple platform observations. Observations acquired near the foothills of the Andes in Argentina are used in this investigation. This region is known for having some of the tallest storms on Earth. During the Austral summer of 2018, a network of radars was deployed in this region to study these storms as part of the RELAMPAGO field experiment. This network of ground-based radars, in addition to satellite and in-situ observations, is used to understand the microphysics of severe storms in this part of the world. The analysis from ground-based radar and GPM-DPR observations is used to self-calibrate the radar network as part of the data quality process. Spectral polarimetric decomposition from radar signal samples in updraft environments was derived to have an insight into the evolution of ice particles in updrafts. In addition, a technique to quantify the attenuation of C-band radar signals in melting ice was developed using a network based approach from simultaneous dual radar observations.