Subject: | SGP/MWR/C1 - Instrument noise problem |
DataStreams: | sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpmwrtipC1.a1, sgpmwrlosC1.b1
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Description: | Various variables including the mixer temperatures were very noisy. After several attempts
to fix the problem, the instrument was taken off line and returned to the manufacturer
for repair. |
Suggestions: | |
Measurements: | sgp5mwravgC1.c1: - Standard deviation about the mean for the IR brightness temperature(ir_temp_sdev)
- Averaged total liquid water along LOS path(liq)
- Flag indicating where the initial surface water measurements are from: 0-> SMOS,
1-> AERI(water_flag) - Mean 31.4 GHz sky brightness temperature(tbsky31)
- Total water vapor along LOS path(vap)
- Standard deviation about the mean for the 31.4 GHz sky brightness temperature(tbsky31_sdev)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- Fraction of data in averaging interval with water on Teflon window(water_flag_fraction)
- IR Brightness Temperature(ir_temp)
- Probability of outlier in ratio of averaged brightness temps(prob_outlier)
- Probability of slope change in ratio of averaged brightness temps(prob_slope_change)
- 31.4 GHz sky brightness temperature(31tbsky)
- 23.8 GHz sky brightness temperature(23tbsky)
- Probability of level change in ratio of averaged brightness temps(prob_level_change)
- Standard deviation about the mean for the 23.8 GHz sky brightness temperature(tbsky23_sdev)
- Standard deviation about the mean for the total water vapor amount(vap_sdev)
- Number of data points averaged out of 15(number_obs_averaged)
- Standard deviation about the mean for the total liquid water amount(liq_sdev)
more
sgp1mwravgC1.c1: - Number of contiguous periods in averaging interval flagged by Dynamic Linear Mo(dlm_flag_periods)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
- Fraction of data in averaging interval flagged by Dynamic Linear Model as poten(dlm_flag_fraction)
- Standard deviation about the mean for the 31.4 GHz sky brightness temperature(tbsky31_sdev)
- Standard deviation about the mean for the total liquid water amount(liq_sdev)
- Standard deviation about the mean for the 23.8 GHz sky brightness temperature(tbsky23_sdev)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- IR Brightness Temperature(ir_temp)
- 23.8 GHz sky brightness temperature(23tbsky)
- Standard deviation about the mean for the total water vapor amount(vap_sdev)
- Fraction of data in averaging interval with water on Teflon window(water_flag_fraction)
- 31.4 GHz sky brightness temperature(31tbsky)
- Standard deviation about the mean for the IR brightness temperature(ir_temp_sdev)
- Total water vapor along LOS path(vap)
- Number of contiguous periods in averaging interval with water on Teflon window(water_flag_periods)
- Averaged total liquid water along LOS path(liq)
more
sgpmwrtipC1.a1: - Temperature correction coefficient at 31.4 GHz(tc31)
- 23.8 GHz Blackbody signal(bb23)
- Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
- Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- Mixer kinetic (physical) temperature(tkxc)
- 23.8 GHz sky signal(tipsky23)
- (tknd)
- 31.4 GHz sky brightness temperature derived from tip curve(tbsky31tip)
- 23.8 GHz goodness-of-fit coefficient(r23)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- Temperature correction coefficient at 23.8 GHz(tc23)
- 31.4 GHz blackbody(bb31)
- Blackbody kinetic temperature(tkbb)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- 31.4 GHz sky signal(tipsky31)
- Correlation coefficients for tip curve at 31.4 GHz(r31)
- Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- Ambient temperature(tkair)
- 23.8 GHz sky brightness temperature derived from tip curve(tbsky23tip)
- Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
more
sgpmwrlosC1.b1: - 23.8 GHz sky signal(sky23)
- Temperature correction coefficient at 23.8 GHz(tc23)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- Blackbody kinetic temperature(tkbb)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
- Temperature correction coefficient at 31.4 GHz(tc31)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- Mixer kinetic (physical) temperature(tkxc)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- Sky Infra-Red Temperature(sky_ir_temp)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- Ambient temperature(tkair)
- Total water vapor along LOS path(vap)
- 31.4 GHz blackbody(bb31)
- Averaged total liquid water along LOS path(liq)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- 23.8 GHz Blackbody signal(bb23)
- (tknd)
- 31.4 GHz sky signal(sky31)
more
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