| DataStreams: | sgprlC1.00, sgprlC1.a0, sgp10rlprofbe1turnC1.c0, sgp10rlprofbe1turnC1.c1,
sgp10rlprofmr1turnC1.c1, sgp10rlprofasr1ferrC1.c1, sgp10rlprofdep1turnC1.c1, sgp10rlprofext1ferrC1.c1
|
| Description: | The sensitivity of the Raman lidar has been degrading since the fall of 2005. One
possible source of the degradation is the interference filters; i.e., their transmission could
be becoming smaller for some reason. To evaluate this hypothesis, we removed the
interference filter from the narrow field-of-view nitrogen channel (i.e., the N2 high channel) on
3/9/2007, and replaced it with its spare.
The original filter was sent to the manufacturer for evaluation. Its transmission was
measured by the manufacturer to be nearly identical to its original performance; in other
words, the filter is not responsible for the lidar's loss of sensitivity. The original
interference filter was reinstalled in the system on 3/23/2007.
The temporary use of the spare interference filter in the high N2 channel should not
affect the data quality, as the transmission characteristics of the spare and the original
filter are nearly identical. |
| Measurements: | sgp10rlprofasr1ferrC1.c1: - cal_asr_high
- bscat_err
- lon
- vert_scale_hi
- scale_add_hi_2
- diff_trans_aerosol_corr
- cal_asr_error_high
- cal_factor_hi
- cal_asr_1
- Aerosol scattering ratio profile from the low channel(asr_low)
- asr_1_error
- cal_asr_low
- hi_cal_type
- height_high
- lat
- Air temperature(temperature)
- time_offset
- tweaks
- cal_asr_error_low
- cal_asr_1_error
- scale_add_lo
- height_low
- base_time
- average_energy
- shots_summed
- Corrected Aerosol volume backscatt. coeff. at 355 nm - removed negative vals(corr_bscat)
- Aerosol scattering ratio profile from the high channel(asr_high)
- alt
- Aerosol scattering ratio profile created by merging the two channels(asr_1)
- asr_error_low
- scale_add_hi
- vert_scale_hi_2
- cloud_mask
- cal_factor_lo
- Backscatter(backscatter)
- asr_error_high
sgp10rlprofdep1turnC1.c1: - attenuation_flag
- calibration_factor
- cloud_mask
- tweaks
- lon
- base_time
- time_offset
- cloud_optical_thickness_aer
- shots_summed
- Pressure, associated geometric height, at altitude, NGM model output(height)
- Cloud base height(cloud_base_height)
- lat
- cloud_depth
- Cloud top height(cloud_top_height)
- cloud_optical_thickness_n2
- average_energy
- alt
- Linear depolarization ratio profile(depolarization_ratio)
- depolarization_ratio_error
sgp10rlprofmr1turnC1.c1: - lat
- mixing_ratio_error_high
- mixing_ratio_other
- mixing_ratio_error_low
- sample_times_other
- Precipitable water vapor observed by the Raman lidar(pwv_rl)
- Cloud liquid water vapor by the microwave radiometer(liq_mwr)
- wv_rl_max_height
- mixing_ratio_low
- mode
- Pressure, associated geometric height, at altitude, NGM model output(height)
- pwv_rl_fraction
- lon
- Water vapor mixing ratio profile created by merging the two channels(mixing_ratio_1)
- Water vapor mixing ratio profile; combines 2 calibrated channels with sfc. obs.(mixing_ratio_3)
- Water vapor mixing ratio profile created by merging the two calibrated channels(mixing_ratio_2)
- relative_humidity_over_ice
- height_low
- alt
- height_high
- Precipitable water vapor observed by the microwave radiometer(pwv_mwr)
- shots_summed
- mixing_ratio_high
- Barometric pressure(pressure)
- mixing_ratio_1_error
- diff_trans_aerosol_corr
- mixing_ratio_2_error
- pwv_rl_err
- cloud_base_height_other
- Air temperature(temperature)
- tweaks
- relative_humidity
- mixing_ratio_3_error
- base_time
- vertical_resolution_bright_mode
- average_energy
- calib_high_low
- vertical_resolution_normal_mode
- calib_factor
- time_offset
sgp10rlprofext1ferrC1.c1: - lon
- extinction_low_resolution
- Aerosol optical depth calculated from the extinction_1 profile(aod_1)
- smoothed_backscatter
- extinction_married1
- Backscatter(backscatter)
- aod_bscat_max_ht
- lat
- tweaks
- average_energy
- extinction_high_olap_corrected
- extinction_from_backscatter
- extinction_from_backscatter_error
- aod_1_max_ht
- extinction_low
- extinction_high_error
- Aerosol optical depth from the surface computed from the extinction_1 profiles(aod_1_profile)
- aod_married1_profile
- aod_married1_max_ht
- extinction_1_resolution
- extinction_married1_error
- aod_married1
- height_low
- smoothed_backscatter_error
- Sa_2
- Sa_1
- extinction_high_olap_corrected_error
- Aerosol optical depth calculated from the extinction_from_backscatter profile(aod_bscat)
- aod_1_error
- extinction_1
- aod_bscat_error
- extinction_high_resolution
- extinction_married1_mask
- shots_summed
- extinction_high
- extinction_1_error
- backscatter_error
- Optical depth, aerosol, from sfc, from extinction_from_backscatter profiles(aod_bscat_profile)
- time_offset
- height_high
- base_time
- mode
- alt
- aod_married1_error
- extinction_low_error
sgprlC1.a0: - pulse_energy
- base_time
- lon
- cloud_value_check
- water_analog_low
- time
- acquisition_time
- shots_summed_water_low
- n2_cloud_check_value
- Raman backscatter, summed analog signal in the high nitrogen channel(nitrogen_analog_high)
- shots_summed_water_high
- time_offset
- alt
- lat
- s9
- s8
- shots_summed_elastic_low
- s3
- s2
- s1
- s7
- s6
- s5
- s4
- Humidity, relative(rh)
- elastic_counts_high
- water_counts_low
- shots_summed
- elastic_analog_high
- shots_summed_depolarization_high
- water_analog_high
- filter
- laser_head
- Raman backscatter, number of photons counted in the high nitrogen channel(nitrogen_counts_high)
- Raman backscatter, number of photons counted in the low nitrogen channel(nitrogen_counts_low)
- Raman backscatter, summed analog signal in the low nitrogen channel(nitrogen_analog_low)
- elastic_analog_low
- shots_summed_nitrogen_low
- shots_summed_elastic_high
- depolarization_counts_high
- water_counts_high
- depolarization_analog_high
- s10
- Model derived 2-meter temperature(temp2)
- temp1
- shots_summed_nitrogen_high
- temp4
- temp3
- temp6
- elastic_counts_low
- temp5
- s12
- s11
sgprlC1.00: - Raw data stream - documentation not supported
sgp10rlprofbe1turnC1.c1: - Humidity, relative(rh)
- rl_w_60m
- pwv_rl_fraction
- lon
- w_err
- base_time
- Aerosol optical depth profiles at 355 nm(aod_profile)
- Linear depolarization ratio profile(depol)
- w_max_height
- mode
- time_offset
- Precipitable water vapor observed by the microwave radiometer(pwv_mwr)
- pwv_rl_err
- asr_err
- extinction_resolution
- aod_err
- ext
- cmask
- alt
- aod_max_height
- t
- Wind speed, vertical, in pressure coordinates, at altitude, ECMWF model-derived(w)
- Cloud liquid water vapor by the microwave radiometer(liq_mwr)
- Pressure, atmospheric, at altitude, RUC model output(p)
- shots_summed
- Preliminary cloud base height above ground level(cbh)
- sample_times_other
- Aerosol backscatter coefficient at 355 nm(bscat)
- twr_w_60m
- rl_w_60m_err
- Precipitable water vapor observed by the Raman lidar(pwv_rl)
- Aerosol optical depth at 355 nm(aod)
- depol_err
- scattering_ratio_resolution
- tweaks
- depolarization_resolution
- bscat_err
- Pressure, associated geometric height, at altitude, NGM model output(height)
- mixing_ratio_resolution
- lat
- ext_err
- average_energy
- Aerosol scattering ratio profile(asr)
sgp10rlprofbe1turnC1.c0: - Linear depolarization ratio profile(depol)
- time_offset
- rl_w_60m
- bscat_err
- aod_max_height
- pwv_rl_fraction
- sample_times_other
- w_err
- Aerosol optical depth at 355 nm(aod)
- Pressure, atmospheric, at altitude, RUC model output(p)
- rl_w_60m_err
- Precipitable water vapor observed by the microwave radiometer(pwv_mwr)
- t
- Wind speed, vertical, in pressure coordinates, at altitude, ECMWF model-derived(w)
- ext
- average_energy
- Humidity, relative(rh)
- ext_err
- scattering_ratio_resolution
- Preliminary cloud base height above ground level(cbh)
- Aerosol backscatter coefficient at 355 nm(bscat)
- alt
- mixing_ratio_resolution
- mode
- Aerosol scattering ratio profile(asr)
- w_max_height
- lon
- depol_err
- depolarization_resolution
- cmask
- base_time
- Aerosol optical depth profiles at 355 nm(aod_profile)
- twr_w_60m
- pwv_rl_err
- Cloud liquid water vapor by the microwave radiometer(liq_mwr)
- Precipitable water vapor observed by the Raman lidar(pwv_rl)
- aod_err
- extinction_resolution
- Pressure, associated geometric height, at altitude, NGM model output(height)
- lat
- shots_summed
- tweaks
- asr_err
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