PGH/MWRHF/M1 - Missing data

Data are missing and unrecoverable.

• Humidity, relative(rh)
• lat
• alt
• time_offset
• Barometric pressure(pressure)
• Sky brightness temperature (90 GHz)(tbsky90)
• Temperature, air(temp)
• Rain flag(rain_flag)
• time
• lon
• base_time
• elevation
• Sky brightness temperature (150 GHz)(tbsky150)

PGH/MWR/M1 - Reprocessed: Incorrect calibration

When the radiometer started to collect data it was not at its final location and had an 
obstructed field of view. The radiometer was moved to its final location on 7/13/2011. 
After the radiometer was moved it started to collect good data for calibration.

The MWRLOS data were reprocessed with appropriate calibrations.  The reprocessed data were 
archived in July 2012.

• tnd23
• tnd_nom31
• tnd23I
• tnd31
• tnd31I
• tbsky31tip
• tbsky23tip
• tc31
• tc23
• tnd_nom23

• tnd31
• tc31
• Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
• tnd23
• tc23
• tnd_nom23
• tnd_nom31
• 31.4 GHz sky brightness temperature(tbsky31)

PGH/MWR/M1 - Reprocessed: Incorrect retrievals

The retrieval coefficients were incorrect because the site did not have a historical 
radiosonde database. MWRLOS data were reprocessed at the end of the deployment with correct 
retrieval coefficients.  Reprocessed data were archived in July 2012

• liqtip
• vaptip

• Total liquid water along LOS path(liq)
• Total water vapor along LOS path(vap)

PGH/MWRP/M1 - Incorrect retrievals

Retrievals from this instrument are affected by the wrong surface temperature and humidity 
readings. Retrievals are wrong until 2/2/2012 when the dewblower was replaced.

• totalPrecipitableWater2RmsError
• Pressure, lifting condensation level(liftingCondensationLevelPres)
• liquidWaterPath2RmsError
• Humidity, relative, prof. from sfc.-10km, from water vap. dens. and temp. prof.(relativeHumidity)
• Liquid water path, from brightness temperatures using statistical retrieval(liquidWaterPath)
• Pressure, level of free convection(levelFreeConvectionPres)
• liquidWaterContentRmsError
• Water vapor, tot. precipitable, from Tbright, 23.835 & 30.0 GHz, stat. retrvl.(totalPrecipitableWater2)
• Height, lifting condensation level(liftingCondensationLevel)
• Temperature, virtual, vert. prof. sfc-10km, fr. wtr. vap. dens. and temp. prof.(virtualTemperature)
• totalPrecipitableWaterRmsError
• Density, water vapor, prof. from sfc.-10 km, der. from Tbright stat. retrvl.(waterVaporDensity)
• waterVaporDensityRmsError
• Water vapor, total precipitable, derived from Tbright using stat. retrvl.(totalPrecipitableWater)
• Liquid water content, cloud, vert. prof. sfc.-10km, from Tbright stat. retrvl.(liquidWaterContent)
• Retrieved dewpoint temperature(dewpointTemperature)
• Height, level of free convection(levelFreeConvection)
• Liquid water path, from Tbright at 23.835 and 30.0 GHz only, using stat. retrvl.(liquidWaterPath2)
• Retrieved water vapor mixing ratio(waterVaporMixingRatio)
• liquidWaterPathRmsError
• Air temperature(temperature)

PGH/MWRP/M1 - Reprocessed: Time corrected

The computer clock had the daylight saving on so the measurements time was off 1 hr. The 
setting was changed on 7/15. Data for 20110620-20110715 were time corrected and 
reprocessed.

• time
• time_offset

PGH/MWRP/M1 - Reprocessed: Incorrect V-band calibration

The V-band calibration was incorrect. An LN2 calibration was conducted and the data were 
reprocessed with updated calibrations at the conclusion of the campaign.  The reprocessed 
data were archived in July 2012.

• Pressure, lifting condensation level(liftingCondensationLevelPres)
• Humidity, relative, prof. from sfc.-10km, from water vap. dens. and temp. prof.(relativeHumidity)
• Pressure, equilibrium level(equilibriumLevelPres)
• Pressure, level of free convection(levelFreeConvectionPres)
• Height, lifting condensation level(liftingCondensationLevel)
• Temperature, virtual, vert. prof. sfc-10km, fr. wtr. vap. dens. and temp. prof.(virtualTemperature)
• Height, equilibrium level(equilibriumLevel)
• Microwave brightness temperature(brightnessTemperature)
• Density, water vapor, prof. from sfc.-10 km, der. from Tbright stat. retrvl.(waterVaporDensity)
• Retrieved dewpoint temperature(dewpointTemperature)
• Height, level of free convection(levelFreeConvection)
• Retrieved water vapor mixing ratio(waterVaporMixingRatio)
• Air temperature(temperature)
• Height, cloud base, height where IR temp. matches retrieved temp. profile(cloudBaseHeight)

PGH/MWRP/M1 - Reprocessed: Incorrect retrieval coefficients

All retrievals were incorrect because the retrieval coefficients were not available for 
this site. Data were reprocessed at the end of the deployment after the coefficients were 
derived by the mentor.  Reprocessed data were archived in July 2012.

• Pressure, lifting condensation level(liftingCondensationLevelPres)
• liquidWaterPath2RmsError
• totalPrecipitableWater2RmsError
• Humidity, relative, prof. from sfc.-10km, from water vap. dens. and temp. prof.(relativeHumidity)
• Liquid water path, from brightness temperatures using statistical retrieval(liquidWaterPath)
• Pressure, level of free convection(levelFreeConvectionPres)
• liquidWaterContentRmsError
• Height, lifting condensation level(liftingCondensationLevel)
• Water vapor, tot. precipitable, from Tbright, 23.835 & 30.0 GHz, stat. retrvl.(totalPrecipitableWater2)
• Temperature, virtual, vert. prof. sfc-10km, fr. wtr. vap. dens. and temp. prof.(virtualTemperature)
• totalPrecipitableWaterRmsError
• temperatureRmsError
• Density, water vapor, prof. from sfc.-10 km, der. from Tbright stat. retrvl.(waterVaporDensity)
• waterVaporDensityRmsError
• Liquid water content, cloud, vert. prof. sfc.-10km, from Tbright stat. retrvl.(liquidWaterContent)
• Water vapor, total precipitable, derived from Tbright using stat. retrvl.(totalPrecipitableWater)
• Height, level of free convection(levelFreeConvection)
• Retrieved dewpoint temperature(dewpointTemperature)
• Liquid water path, from Tbright at 23.835 and 30.0 GHz only, using stat. retrvl.(liquidWaterPath2)
• liquidWaterPathRmsError
• Retrieved water vapor mixing ratio(waterVaporMixingRatio)
• Air temperature(temperature)
• Height, cloud base, height where IR temp. matches retrieved temp. profile(cloudBaseHeight)

PGH/MWRHF/M1 - Reprocess: Incorrect calibration

The MWRHF is not tipping correctly. The views on the two sides of the radiometer are 
significantly different at all scanning angles. This could be an indication of obstructions in 
the field of view or a mirror misalignment. An LN2 calibration was unsuccessful as well.

• Sky brightness temperature (90 GHz)(tbsky90)
• Sky brightness temperature (150 GHz)(tbsky150)

PGH/MWRHF/M1 - Incorrect relative humidity readings

The relative humidity readings are incorrect.

• Humidity, relative(rh)

PGH/MWRP/M1 - Missing data

Data are missing and unrecoverable.

• infraredTemperature
• totalPrecipitableWater2RmsError
• Humidity, relative, prof. from sfc.-10km, from water vap. dens. and temp. prof.(relativeHumidity)
• time
• frequency
• Pressure, level of free convection(levelFreeConvectionPres)
• Energy, potential, convective, available, from RUC model(cape)
• liquidWaterContentRmsError
• Water vapor, tot. precipitable, from Tbright, 23.835 & 30.0 GHz, stat. retrvl.(totalPrecipitableWater2)
• Pressure, associated geometric height, at altitude, NGM model output(height)
• Height, lifting condensation level(liftingCondensationLevel)
• Temperature, virtual, vert. prof. sfc-10km, fr. wtr. vap. dens. and temp. prof.(virtualTemperature)
• Height, equilibrium level(equilibriumLevel)
• Pressure, barometric. at instrument height (1 or 2 m)(surfacePressure)
• Microwave brightness temperature(brightnessTemperature)
• Water vapor, total precipitable, derived from Tbright using stat. retrvl.(totalPrecipitableWater)
• wetWindowFlag
• Retrieved water vapor mixing ratio(waterVaporMixingRatio)
• liquidWaterPathRmsError
• alt
• azimuth
• Air temperature(temperature)
• Height, cloud base, height where IR temp. matches retrieved temp. profile(cloudBaseHeight)
• Temperature, air, at instrument height (1 or 2 m)(surfaceTemperature)
• Pressure, lifting condensation level(liftingCondensationLevelPres)
• liquidWaterPath2RmsError
• Humidity, relative, at instrument height (1 or 2 m)(surfaceRelativeHumidity)
• Liquid water path, from brightness temperatures using statistical retrieval(liquidWaterPath)
• Pressure, equilibrium level(equilibriumLevelPres)
• base_time
• lat
• lon
• blackbodyTemperature
• totalPrecipitableWaterRmsError
• Density, water vapor, at instrument height (1 or 2 m)(surfaceWaterVaporDensity)
• Density, water vapor, prof. from sfc.-10 km, der. from Tbright stat. retrvl.(waterVaporDensity)
• temperatureRmsError
• dataQualityFlags
• waterVaporDensityRmsError
• Liquid water content, cloud, vert. prof. sfc.-10km, from Tbright stat. retrvl.(liquidWaterContent)
• Retrieved dewpoint temperature(dewpointTemperature)
• Height, level of free convection(levelFreeConvection)
• Liquid water path, from Tbright at 23.835 and 30.0 GHz only, using stat. retrvl.(liquidWaterPath2)
• time_offset
• Barometric pressure(pressure)
• elevation

PGH/MWRP/M1 - Channel interference

The 23.834-GHz channel was displaying high noise levels. It started with intermittent 
noise, but became more persistent with time. The problem was identified as interference from 
the near-by MWR. On 12/7 the radiometers were re-oriented and the noise level went down.

• Humidity, relative, prof. from sfc.-10km, from water vap. dens. and temp. prof.(relativeHumidity)
• Water vapor, total precipitable, derived from Tbright using stat. retrvl.(totalPrecipitableWater)
• Liquid water content, cloud, vert. prof. sfc.-10km, from Tbright stat. retrvl.(liquidWaterContent)
• Liquid water path, from brightness temperatures using statistical retrieval(liquidWaterPath)
• Liquid water path, from Tbright at 23.835 and 30.0 GHz only, using stat. retrvl.(liquidWaterPath2)
• Retrieved water vapor mixing ratio(waterVaporMixingRatio)
• Water vapor, tot. precipitable, from Tbright, 23.835 & 30.0 GHz, stat. retrvl.(totalPrecipitableWater2)
• Temperature, virtual, vert. prof. sfc-10km, fr. wtr. vap. dens. and temp. prof.(virtualTemperature)
• Density, water vapor, prof. from sfc.-10 km, der. from Tbright stat. retrvl.(waterVaporDensity)
• Microwave brightness temperature(brightnessTemperature)

PGH/NFOV/M1 - Instrument noise/interference

When the signals are very low, a regular feature can be seen in the data.  It begins on 
the hour, and lasts for ~20 minutes.  This feature is a rise in the signal of 0.25 to 0.33 
mV.  It is small even when compared with the NFOV's typically small signals.  

My initial hunch is the NFOV is located next to or nearby equipment that 
operates/broadcasts/etc beginning on the hour, and lasting for ~20 minutes.

Looking (very closely) back at the previous deployment, this regular signal bump is also 
evident, so it seems the equipment contaminating the NFOV is part of the AMF1, and not 
unique to this deployment.  20111222 is a good example of the issue.

• raw_counts_673nm
• raw_counts_870nm
• Calibrated Zenith Radiance, 673nm(radiance_673nm)
• Calibrated Zenith Radiance, 870nm(radiance_870nm)

PGH/MWRP/M1 - Incorrect surface temperature and humidity

The surface readings of temperature and humidity are wrong. The sensor needs to be 
replaced. The sensor and dewblower were replaced on Feb 2 2012.

The incorrect surface temperature and humidity will cause wrong retrievals as well.

• Humidity, relative, at instrument height (1 or 2 m)(surfaceRelativeHumidity)
• Density, water vapor, at instrument height (1 or 2 m)(surfaceWaterVaporDensity)
• Temperature, air, at instrument height (1 or 2 m)(surfaceTemperature)
• Pressure, barometric. at instrument height (1 or 2 m)(surfacePressure)

PGH/MWRHF/M1 - Rain flag intermittently working

The rain flag didn't work consistently during the deployment.  Users should check the rain 
flag from other instruments such as the MWR to screen for rain events/contamination.

• Sky brightness temperature (90 GHz)(tbsky90)
• Rain flag(rain_flag)
• Sky brightness temperature (150 GHz)(tbsky150)

PGH/SKYRAD/M1 - Reprocess: Incorrect calibrations

During the entire India deployment the Skyrad system was configured with incorrect 
calibration coefficients for the shortwave instruments. The program hadn't been updated since 
the previous deployment in the Azores.

The instrument mentor, site personal and OSS support have attempted to best determine the 
serial numbers of instruments installed at PGH during the deployment period.  The 
following instrument data will need to be reprocessed with the following correction multipliers:

PIR1-DIR(down_long_hemisp1): OK, no correction required
PIR2-DIR(down_long_hemisp2): OK, no correction required
Diffuse 8-48 (down_short_diffuse): 116.95(correct)/120.91(incorrect) = .96725
NIP (short_direct_normal): 127.03(correct)/124.97(incorrect) = 1.01648
PSP-DS (down_short_hemsip): 111.29(correct)/108.48(incorrect) = 1.02590
IRT: calibration should be validated by instrument mentor (Vic Morris): mult=26, 
offset=173.2

Correct serial numbers:   
Diffuse 8-48 (down_short_diffuse): 34066
NIP (short_direct_normal): 34135E6
PSP-DS (down_short_hemsip): 33942F3

• inst_global
• inst_diffuse
• inst_sky_ir_signal
• inst_direct_normal

• Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
• down_short_hemisp_std
• IR Brightness Temperature(sky_ir_temp)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
• sky_ir_temp_min
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
• sky_ir_temp_max
• Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
• sky_ir_temp_std
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• down_short_diffuse_hemisp_std
• Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
• short_direct_normal_std