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  • Each Antenna measures the doppler velocity, doppler spectral width, and reflectivity factor.

  • Doppler velocities provide a measure of the pulse volume-weighted hydrometer motion (hydrometer fallspeed + air motion.)

  • Vertical air motion can calculated from the nadir beam by removing the fallspeed contribution with an aproximation

  • Along-track horizontal air motion can be calculated by combining doppler wind speeds from forward and nadir beams.

  • The linear depolarization ratio (the ration of the cross-polar to the co-polar reflectivites) can be measured along forward beam.

 

 
Dr. Gerry Heymsfield
email: Gerald.M.Heymsfield@nasa.gov
phone: (301) 614-6369
fax: (301) 614-5492		 Lin Tian
email:tian@agnes.gsfc.nasa.gov
phone: (301) 614-5639
fax: (301) 614-5492