 It has resulted in the upgrading of the entire meteorological radar network in the United States by adding dual polarization to better determine the type of hydrometeor, and quantities that have fallen.During the years preceding JPOLE, NCAR was among the first centers in the field to utilize dual polarization for a weather radar, with staff Dusan S. Zrnic and Alexander V. Ryzhkov.In July 2000, the first planning meeting for JPOLE was held at the NSSL, and it was determined that the project would take place in two stages