Research on Quantitative Precipitation Estimation Method based on Weather Radar in Leshan Area
- Resource Type
- Conference
- Authors
- Zhao, Yi; Su, Debin
- Source
- 2019 International Conference on Meteorology Observations (ICMO) Meteorology Observations (ICMO), 2019 International Conference on. :1-4 Dec, 2019
- Subject
- Aerospace
Computing and Processing
Fields, Waves and Electromagnetics
Geoscience
Signal Processing and Analysis
Estimation
Rain
Meteorological radar
Doppler radar
Standards
Doppler weather radar
Quantitative precipitation estimation
Dynamic grading Z-I relationship
CAPPI
- Language
In this paper, we analyzed the precipitation data from 2016 to 2017 obtained by the new-generation weather radar and 256 ground automatic rainfall stations in Leshan and applied the dynamic grading Z-I relationship method of the quantitative precipitation estimation of Leshan area, while the method was based on constant altitude plan position indicator (CAPPI) products. The results show the dynamic grading Z-I relationship method is better than the fixed Z-I relationship method of estimation of heavy rain intensity (above 40 mm/h) and the overall estimation effect in the rain intensity and hourly cumulative rainfall. But there still exists an underestimation of heavy precipitation.