1995 | MATTHIAS STEINER, ROBERT A. HOUZE JR., AND SANDRA E. YUTER
This paper presents a methodology for extracting climatological information from operational radar and rain gauge data, focusing on separating convective and stratiform precipitation, characterizing their vertical structure, and estimating precipitation amounts. The study uses data from a volume-scanning radar and a rain gauge network in Darwin, Australia, during February 1988. The algorithms developed are tested on one month of data, demonstrating their accuracy in separating convective and stratiform regions, summarizing the vertical structure of radar echoes, and computing monthly rain statistics. The convective-stratiform separation is based on the intensity and sharpness of echo peaks, with criteria applied consistently across the observational domain. The vertical structure algorithm presents the frequency distribution of radar reflectivity as a function of height, revealing differences between convective and stratiform echoes. Tests show that the algorithms perform well, with monthly rain statistics varying within 10% regardless of the precipitation estimation technique used. The methodology is designed to be robust and applicable to other operational radar sites, particularly for validating the Tropical Rainfall Measuring Mission (TRMM) satellite data.This paper presents a methodology for extracting climatological information from operational radar and rain gauge data, focusing on separating convective and stratiform precipitation, characterizing their vertical structure, and estimating precipitation amounts. The study uses data from a volume-scanning radar and a rain gauge network in Darwin, Australia, during February 1988. The algorithms developed are tested on one month of data, demonstrating their accuracy in separating convective and stratiform regions, summarizing the vertical structure of radar echoes, and computing monthly rain statistics. The convective-stratiform separation is based on the intensity and sharpness of echo peaks, with criteria applied consistently across the observational domain. The vertical structure algorithm presents the frequency distribution of radar reflectivity as a function of height, revealing differences between convective and stratiform echoes. Tests show that the algorithms perform well, with monthly rain statistics varying within 10% regardless of the precipitation estimation technique used. The methodology is designed to be robust and applicable to other operational radar sites, particularly for validating the Tropical Rainfall Measuring Mission (TRMM) satellite data.