Preliminary Analysis of Bulk Rain Variables Acquired from Laser Precipitation Monitors Mounted at Different Heights on a Vertical Tower

Student: Carson Barber

Major: Physics

Mentors: Dr. Michael L. Larsen

Department: Physics and Astronomy

Preliminary Analysis of Bulk Rain Variables Acquired from Laser Precipitation Monitors Mounted at Different Heights on a Vertical Tower

The Laser Precipitation Monitor (LPM, manufactured by Thies Clima) is a device which measures the number of raindrops that fall through its detection area for a 20x22 array of diameter/fall velocity classes in one minute time intervals. Pairs of these devices have been set up at four heights on a 200-meter tower at the National Wind Institute at Texas Tech University near Lubbock, Texas. Here we perform analysis on the correlations between instantaneous rain rates and drop size distributions for measurements taken at different heights. The results give insight regarding the degree to which point precipitation measurements on the ground can be used to determine the accuracy of radar rain retrieval methods.