The Midlatitude Continental Convective Clouds Experiment (MC3E), conducted in Oklahoma, multiple field campaigns over central Argentina, and the project Cloud processes of tHe main precipitation systems in Brazil: A contribUtion to cloud resolVing modeling and to the GPM (CHUVA), conducted in Santa Maria, southern Brazil, will provide measurements in intense precipitation mixed with hail in order to constrain polarimetric attenuation correction relationships. T-matrix simulations will be used to explore coefficients in these relationships which strongly depend on hydrometeor phase and drop size distribution (DSD) measurements. Different wavelengths including C, S and X band are considered in the evaluation in order to understand the effects of varying microphysical properties on these relationships. Comparisons are made amongst different DSD sensors, including laser sensors (Particle Size Velocity first and second generation, Thies), two-dimensional video disdrometers to examine instrument-dependent impacts on the attenuation corrections. The impact on differences will be analyzed over a sample of cases over in order to understand possible contribution to total QPE estimations using commonly used algorithms for attenuation correction.