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.

• Pressure, lifting condensation level(liftingCondensationLevelPres)
• totalPrecipitableWater2RmsError
• 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)
• Temperature, dewpoint, profile 0-3 km, physically retrieved from AERI radiances(dewpointTemperature)
• Height, level of free convection(levelFreeConvection)
• Liquid water path, from Tbright at 23.835 and 30.0 GHz only, using stat. retrvl.(liquidWaterPath2)
• Mixing ratio, water vap., vert. prof. sfc-10km, frm retr. water vap. dens. prof(waterVaporMixingRatio)
• liquidWaterPathRmsError
• MET air temperature(temperature)

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, level of free convection(levelFreeConvectionPres)
• Pressure, equilibrium level(equilibriumLevelPres)
• Height, lifting condensation level(liftingCondensationLevel)
• Temperature, virtual, vert. prof. sfc-10km, fr. wtr. vap. dens. and temp. prof.(virtualTemperature)
• Height, equilibrium level(equilibriumLevel)
• Density, water vapor, prof. from sfc.-10 km, der. from Tbright stat. retrvl.(waterVaporDensity)
• Microwave brightness temperature(brightnessTemperature)
• Temperature, dewpoint, profile 0-3 km, physically retrieved from AERI radiances(dewpointTemperature)
• Height, level of free convection(levelFreeConvection)
• Mixing ratio, water vap., vert. prof. sfc-10km, frm retr. water vap. dens. prof(waterVaporMixingRatio)
• MET 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)
• totalPrecipitableWater2RmsError
• 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)
• temperatureRmsError
• 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)
• Temperature, dewpoint, profile 0-3 km, physically retrieved from AERI radiances(dewpointTemperature)
• Height, level of free convection(levelFreeConvection)
• Liquid water path, from Tbright at 23.835 and 30.0 GHz only, using stat. retrvl.(liquidWaterPath2)
• liquidWaterPathRmsError
• Mixing ratio, water vap., vert. prof. sfc-10km, frm retr. water vap. dens. prof(waterVaporMixingRatio)
• MET air temperature(temperature)
• Height, cloud base, height where IR temp. matches retrieved temp. profile(cloudBaseHeight)

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)
• Liquid water content, cloud, vert. prof. sfc.-10km, from Tbright stat. retrvl.(liquidWaterContent)
• Water vapor, total precipitable, derived from Tbright using stat. retrvl.(totalPrecipitableWater)
• 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)
• Mixing ratio, water vap., vert. prof. sfc-10km, frm retr. water vap. dens. prof(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)
• Microwave brightness temperature(brightnessTemperature)
• Density, water vapor, prof. from sfc.-10 km, der. from Tbright stat. retrvl.(waterVaporDensity)

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)
• Pressure, barometric. at instrument height (1 or 2 m)(surfacePressure)
• Temperature, air, at instrument height (1 or 2 m)(surfaceTemperature)