Corrected moments in antenna coordinates 2.0: Lessons learned
Authors
Scott Matthew Collis — Argonne National Laboratory
Scott Giangrande — Brookhaven National Laboratory
Jonathan Helmus — Argonne National Laboratory
Category
ARM Infrastructure
Description
A plan position indicator plot of scatterer radial velocity as collected by the South East X-Band Scanning ARM Precipitation Radar. Various non-meteorological scattering phenomena are highlighted which need to be identified and corrected for in CMAC2.0.
Radars emit a pulse of radiation that propagates, attenuates and scatters. The received power back at the antenna can be due to a large number of possible targets. In order to use ARM’s radars for their intended purpose of understanding physical processes in clouds the first task is identify what exactly is causing the scattering that produces the return signal. After this initial gate ID is performed it can be used to assist the processes of dealiasing, phase calculation, attenuation correction and rainfall and geophysical property estimation. This presentation highlights some of the challenges within the 5 and 3cm wavelength radar data and how our team at Brookhaven and Argonne National Laboratory are using a mix of radar science, mathematics and software engineering to build a robust infrastructure to deliver better quality data as the first step towards understanding four dimensional precipitation processes.
