SGP/XSAPR/I6 - Missing Data

The instrument software was being upgraded and as a result the radar was down for a period 
of time while the bugs were resolved.

• Attenuation corrected reflectivity(reflectivity_corr)
• Mean Doppler Velocity(mean_doppler_velocity)
• Lag-0 co-polar correlation coefficient, clutter filtered(copol_coeff)
• Attenuation corrected differential reflectivity(diff_reflectivity_corr)
• Differential propagation phase shift(dp_phase_shift)
• time
• Reflectivity(reflectivity)
• Signal quality index(sig_qual_index)
• Doppler spectral width, clutter filtered(doppler_spectral_width)
• Differential reflectivity, clutter filtered(diff_reflectivity)
• Specific differential phase, clutter filtered(diff_phase)
• gate
• Unfiltered reflectivity(reflectivity_unf)

• Differential propagation phase shift(dp_phase_shift)
• Attenuation corrected reflectivity(reflectivity_corr)
• gate
• Specific differential phase, clutter filtered(diff_phase)
• Doppler spectral width, clutter filtered(doppler_spectral_width)
• Mean Doppler Velocity(mean_doppler_velocity)
• Lag-0 co-polar correlation coefficient, clutter filtered(copol_coeff)
• Unfiltered reflectivity(reflectivity_unf)
• Attenuation corrected differential reflectivity(diff_reflectivity_corr)
• Reflectivity(reflectivity)
• Differential reflectivity, clutter filtered(diff_reflectivity)
• Signal quality index(sig_qual_index)
• time

• time
• Specific differential phase, clutter filtered(diff_phase)
• Attenuation corrected differential reflectivity(diff_reflectivity_corr)
• Differential reflectivity, clutter filtered(diff_reflectivity)
• Mean Doppler Velocity(mean_doppler_velocity)
• Attenuation corrected reflectivity(reflectivity_corr)
• Doppler spectral width, clutter filtered(doppler_spectral_width)
• Reflectivity(reflectivity)
• gate
• Signal quality index(sig_qual_index)
• Unfiltered reflectivity(reflectivity_unf)
• Differential propagation phase shift(dp_phase_shift)
• Lag-0 co-polar correlation coefficient, clutter filtered(copol_coeff)

SGP/XSAPR/I6 - Reduced Sensitivity

AFC not locking on to the transmitter frequency. As a result the receiver did not adjust 
to the drift in frequency. The received signal was not fully in band. The radars were 
configured to hunt for the burst pulse but it failed repeatedly.

• Reflectivity(reflectivity)
• Attenuation corrected reflectivity(reflectivity_corr)
• Lag-0 co-polar correlation coefficient, clutter filtered(copol_coeff)
• Differential reflectivity, clutter filtered(diff_reflectivity)
• Unfiltered reflectivity(reflectivity_unf)
• Attenuation corrected differential reflectivity(diff_reflectivity_corr)

• Differential reflectivity, clutter filtered(diff_reflectivity)
• Attenuation corrected reflectivity(reflectivity_corr)
• Unfiltered reflectivity(reflectivity_unf)
• Attenuation corrected differential reflectivity(diff_reflectivity_corr)
• Reflectivity(reflectivity)
• Lag-0 co-polar correlation coefficient, clutter filtered(copol_coeff)

NSA/XSAPR/C1 - Reprocessing Notice (RID 1318)

See below for details of reprocessing that was completed on 20151207.  Original 
DQR category: 4 (Red, Incorrect).

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The time variable in the a1 datastream contains incorrect times for sweeps in which one or 
more rays were not collected by the instrument.

Data in field variables contains a default value and not _FillValue for gates in rays 
which have fewer than the maximum number of gates collected by the instrument for that 
volume. This has been observed in RHI scans in the NSA and SGP where the instruments does not 
collect gates which would have a height above a instrument defined altitude. These gates 
should be masked and indicated by _FillValue. The value in these gates is unusual for the 
field and typically easy to identify as incorrect.

• time_coverage_start
• volume_number
• unambiguous_range
• Differential propagation phase shift(differential_phase)
• sweep_start_ray_index
• Differential reflectivity(differential_reflectivity)
• file_status
• altitude
• longitude
• range
• sweep_number
• azimuth
• Normalized coherent power(normalized_coherent_power)
• latitude
• Mean Doppler Velocity(mean_doppler_velocity)
• Specific differential phase (KDP)(specific_differential_phase)
• sweep_end_ray_index
• Cross correlation ratio (RhoHV)(cross_correlation_ratio)
• elevation
• nyquist_velocity
• Reflectivity horizontal(reflectivity_horizontal)
• fixed_angle
• time_coverage_end
• Total power(total_power)
• sweep_mode
• prt_mode
• prt
• Doppler spectrum width(doppler_spectrum_width)
• time

• elevation
• prt_mode
• Specific differential phase (KDP)(specific_differential_phase)
• Differential propagation phase shift(differential_phase)
• longitude
• sweep_number
• unambiguous_range
• sweep_start_ray_index
• sweep_mode
• Differential reflectivity(differential_reflectivity)
• Cross correlation ratio (RhoHV)(cross_correlation_ratio)
• fixed_angle
• nyquist_velocity
• time_coverage_start
• volume_number
• latitude
• file_status
• sweep_end_ray_index
• prt
• range
• time_coverage_end
• Total power(total_power)
• Doppler spectrum width(doppler_spectrum_width)
• Normalized coherent power(normalized_coherent_power)
• time
• azimuth
• altitude
• Mean Doppler Velocity(mean_doppler_velocity)
• Reflectivity horizontal(reflectivity_horizontal)

• Total power(total_power)
• unambiguous_range
• prt
• elevation
• fixed_angle
• Cross correlation ratio (RhoHV)(cross_correlation_ratio)
• Differential propagation phase shift(differential_phase)
• altitude
• range
• latitude
• azimuth
• time_coverage_start
• longitude
• Mean Doppler Velocity(mean_doppler_velocity)
• Reflectivity horizontal(reflectivity_horizontal)
• sweep_start_ray_index
• volume_number
• sweep_mode
• sweep_number
• sweep_end_ray_index
• Specific differential phase (KDP)(specific_differential_phase)
• file_status
• Doppler spectrum width(doppler_spectrum_width)
• prt_mode
• Normalized coherent power(normalized_coherent_power)
• time
• Differential reflectivity(differential_reflectivity)
• nyquist_velocity
• time_coverage_end