Dual Polarization at NSSL

1983: Upgrade of Cimarron radar to dual polarization; switching between horizontal and vertical polarization
1984: Collection of first (anywhere) dual polarization time series data
1985 to 1989: Definition of the complete set of polarimetric variables. Development of schemes to obtain these variables together with spectral moments
1992: First (anywhere) collection of polarimetric variables at all range locations
1992 to present: Development of schemes to classify hydrometeor type. Improvement of rainfall estimation. Design of a system functionally compatible with the WSR-88D; simultaneous transmission and reception of horizontally and vertically polarized waves
2002: Upgrade of KOUN radar to dual polarization
2002-2003: Joint POLarization Experiment (JPOLE)