Rainfall parameters estimated from dual-polarization radar measurements using the differential-reflectivity technique are compared with ground-based disdrometer measurements located 47.1 km from the radar. This case study is based on data obtained during an experiment in central Illinois on October 29, 1982. Both empirical and model relationships between radar observables and rainfall parameters are tested. The differential-reflectivity technique is compared with the conventional Z - R technique and is shown to provideimprovements in the estimation of rainfall rate by radar. The analysis includes careful consideration of the spatial and temporal factors relating the radar-scattering volumes to the location and duration of ground-based disdrometer measurements. The significance of these factors (mainly due to the horizontal and vertical motion of raindrops) in radar-disdrometer comparisons is evident in the results.
|Original language||English (US)|
|Number of pages||11|
|Journal||IEEE Transactions on Geoscience and Remote Sensing|
|State||Published - Nov 1987|
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
- Earth and Planetary Sciences(all)