| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 08/16/2006 | 0600 | 02/14/2009 | 2359 | Does not affect quality |
| Subject: | TWP/MMCR/C2 - Precipitation Mode Reflectivity Incorrect |
| DataStreams: | twpmmcrspecmomC2.a0, twpmmcrmomC2.b1, twpmmcrC2.00 |
| Description: | The MMCR's precipitation mode is achieved by switching in one of two rf switches thereby intending to add approximately 25 dB of attenuation. This prevents the receiver and computer ADC from saturating. It now appears that the amount of attenuation actually being applied varied, and is not accurately known. The precipitation mode reflectivities values may not be quantitatively accurate. It appears that approximately 50 dB of attenuation was actually being applied. Mode 4 reflectivities were typically 10+ dBZ less than corresponding Mode 3 values. |
| Suggestions: | The reflectivity values should not be used in a quantitative manner. |
| Measurements: | twpmmcrspecmomC2.a0: more
twpmmcrC2.00: more twpmmcrmomC2.b1: more |