| Subject: | SGP/MWR/B6 - Instrument replaced, calibration incorrect |
| DataStreams: | sgpmwrlosB6.a0, sgpmwrlosB6.b1, sgpmwrlosB6.a1, sgp5mwravgB6.c1
|
| Description: | MWR serial number 18 was replaced with MWR serial number 04 at 1652 on 2 Aug 2002.
Between this time and 2214, when a sufficient number of new tip curves were acquired to update
the calibration, the old calibration (for serial number 18) was used. During this period
the data are incorrect. |
| Suggestions: | Avoid use of these data. |
| Measurements: | sgp5mwravgB6.c1: - Standard deviation about the mean for the 31.4 GHz sky brightness temperature(tbsky31_sdev)
- Fraction of data in averaging interval with water on Teflon window(water_flag_fraction)
- Standard deviation about the mean for the total water vapor amount(vap_sdev)
- Standard deviation about the mean for the total liquid water amount(liq_sdev)
- 31.4 GHz sky brightness temperature(31tbsky)
- Time offset from base_time(time_offset)
- Number of contiguous periods in averaging interval flagged by Dynamic Linear Mo(dlm_flag_periods)
- North Latitude(lat)
- -180.0 - +180.0(alt)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
- Number of points included in the ir_temp ensemble(num_obs_irt)
- Number of data points averaged for 23tbsky, 31tbsky, vap & liq(num_obs)
- IR Brightness Temperature(ir_temp)
- Number of contiguous periods in averaging interval with water on Teflon window(water_flag_periods)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- Standard deviation about the mean for the 23.8 GHz sky brightness temperature(tbsky23_sdev)
- Number of data points averaged for ir_temp(num_obs_ir)
- 23.8 GHz sky brightness temperature(23tbsky)
- Standard deviation about the mean for the IR brightness temperature(ir_temp_sdev)
- Averaged total liquid water along LOS path(liq)
- base time in epoch(base_time)
- Total water vapor along LOS path(vap)
- Fraction of data in averaging interval flagged by Dynamic Linear Model as poten(dlm_flag_fraction)
- lon(lon)
more
sgpmwrlosB6.a0: - 23.8 GHz Blackbody signal(23bb)
- 31.4 GHz sky brightness temperature(31tbsky)
- 31.4 GHz blackbody+noise injection signal(31bbn)
- Averaged total liquid water along LOS path(liq)
- 31.4 GHz sky signal(31sky)
- Temperature correction coefficient at 23.8 GHz(temperature_correction_coef_23)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- North Latitude(lat)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- Temperature correction coefficient at 31.4 GHz(temperature_correction_coef_31)
- -180.0 - +180.0(alt)
- Which LOS configuration(losn)
- 23.8 GHz noise injection brightness temperature(23unoise)
- base time in epoch(base_time)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- Actual Azimuth(actaz)
- 31.4 GHz blackbody(31bb)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- Blackbody kinetic temperature(tkbb)
- 31.4 GHz sky signal(sky31)
- IR Brightness Temperature(ir_temp)
- 23.8 GHz sky brightness temperature(23tbsky)
- 31.4 GHz noise injection brightness temperature(31unoise)
- Time offset from base_time(time_offset)
- 23.8 GHz sky signal(sky23)
- 23.8 GHz sky+noise injection signal(23skyn)
- Total water vapor along LOS path(vap)
- Ambient temperature(tkair)
- 23.8 GHz sky signal(23sky)
- lon(lon)
- Noise injection temp at nominal temperature at 31.4 GHz(noise_injection_temp_31)
- Mixer kinetic (physical) temperature(tkxc)
- 23.8 GHz blackbody+noise injection signal(23bbn)
- 31.4 GHz blackbody(bb31)
- Noise injection temp at nominal temperature at 23.8 GHz(noise_injection_temp_23)
- (tknd)
- Actual elevation angle(actel)
- 31.4 GHz sky+noise injection signal(31skyn)
- 23.8 GHz Blackbody signal(bb23)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
more
sgpmwrlosB6.b1: - IR Brightness Temperature(ir_temp)
- 31.4 GHz sky signal(sky31)
- Ambient temperature(tkair)
- Temperature correction coefficient at 31.4 GHz(tc31)
- Total water vapor along LOS path(vap)
- lon(lon)
- 23.8 GHz sky signal(sky23)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
- Time offset from base_time(time_offset)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- 23.8 GHz Blackbody signal(bb23)
- (tknd)
- -180.0 - +180.0(alt)
- Mixer kinetic (physical) temperature(tkxc)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- North Latitude(lat)
- 31.4 GHz blackbody(bb31)
- Sky Infra-Red Temperature(sky_ir_temp)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- Averaged total liquid water along LOS path(liq)
- Temperature correction coefficient at 23.8 GHz(tc23)
- Blackbody kinetic temperature(tkbb)
- base time in epoch(base_time)
more
sgpmwrlosB6.a1: - (tknd)
- Actual Azimuth(actaz)
- 31.4 GHz sky signal(sky31)
- 23.8 GHz Blackbody signal(bb23)
- Ambient temperature(tkair)
- Sky Infra-Red Temperature(sky_ir_temp)
- Total water vapor along LOS path(vap)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
- lon(lon)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
- 31.4 GHz blackbody(bb31)
- Mixer kinetic (physical) temperature(tkxc)
- 23.8 GHz sky signal(sky23)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- 23.8 GHz sky brightness temperature(23tbsky)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- Averaged total liquid water along LOS path(liq)
- Blackbody kinetic temperature(tkbb)
- Temperature correction coefficient at 23.8 GHz(tc23)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- Time offset from base_time(time_offset)
- Actual elevation angle(actel)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- -180.0 - +180.0(alt)
- North Latitude(lat)
- 31.4 GHz sky brightness temperature(31tbsky)
- IR Brightness Temperature(ir_temp)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- base time in epoch(base_time)
- Temperature correction coefficient at 31.4 GHz(tc31)
more
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