Description: | The Solaris computer was changed out in late January 2005. The antenna parameters were
not changed when this happened so that the SGP's antenna gain and beam widths were used to
calculate the radar constant. This results in an underestimation of 4.69 dB in
reflectivity.
The difference in antenna gain is 57.2-52.73 dB or 4.47 dB. Since the game is squared in
the denominator of the radar constant, this results in an error of 8.94 dB due to the
antenna gain alone.
The difference in beam width is 0.19 to 0.31. 20log(.19/.31) = -4.25 dB.
Total reflectivity error = 8.94 dB - 4.25 dB = 4.69 dB
The raw data could not be edited to make this fix, however the reprocessing team was able
to apply this correction to the netcdf files per RID 0200, DQR D050620.1, EWO 15549. If
this raw data needs to be reprocessed again, please apply these same calibrations to the
dataset. |