Evaluation Product : Quantitative Precipitation Estimates (QPE) from the CSAPR
2011.04.15 - 2011.06.29
Site(s)
SGP
General Description
Precipitation rates from cloud systems can give a fundamental insight into the processes occurring in-cloud. While rain gauges and disdrometers can give information at a single point, remote sensors such as radars can provide rainfall information over a defined area.
The QPE value-added product (VAP) takes the Corrected Moments in Antenna Coordinates VAP and maps the Rain_rate_A field onto a Cartesian grid at the surface. This field is the rain rate as determined using the specific attenuation (A, dBZ/km) due to two-way liquid attenuation after Ryzhkov et al 2013. Since A is calculated using both differential phase and the integral of reflectivity along the beam path, it naturally combines a measurement sensitive to large and small rain rates as highlighted in a comparison against the Oklahoma Mesonet shown in Figure 1a. Figure 1b shows a single time step highlighting the ability of the algorithm to capture rainfall from both the leading convective line and the trailing stratiform region.
Data Information
Contacts
Principal Investigator
Scott Collis 630-252-0550
