PYE/MPL/M1 - wrong temperature calibration

Wrong calibration coefficients were applied to the temperature values.  These are 
engineering housekeeping data only.  The scientifically relevant measurements were unaffected.

• laser_temp
• detector_temp
• filter_temp
• instrument_temp

PYE/NFOV/M1 - Intermittent missing data

During the Pt Reyes deployment of the NFOV, the instrument experienced intermittent data 
gaps due to communications problems.  Data gaps occurred for the following date ranges:
20050718-20050723
20050727-20050730
20050803-20050804
20050813-20050816
20050820-20050822
20050826-20050827
20050830-20050902
20050908-20050910

• time_offset
• Calibrated Zenith Radiance, 673nm(radiance_673nm)
• head_temp
• time
• base_time
• tube_temp
• raw_counts_870nm
• cosine_solar_zenith_angle
• raw_counts_673nm
• Calibrated Zenith Radiance, 870nm(radiance_870nm)

• Raw data stream - documentation not supported

PYE/NFOV/M1 - Intermittent data gaps

Intermittent data collection of the NFOV.  Data collection not successful regularly during 
day light hours but generally caught up during the nighttime hours.  Occasionally the 
system stopped collecting altogether and a reboot of the network components was required to 
restart collection. Data gaps are largest 18 through 23 of July and 27 through 30 July.

• Calibrated Zenith Radiance, 673nm(radiance_673nm)
• time_offset
• base_time
• tube_temp
• cosine_solar_zenith_angle
• raw_counts_870nm
• lat
• Calibrated Zenith Radiance, 870nm(radiance_870nm)
• alt
• head_temp
• time
• lon
• raw_counts_673nm

• Raw data stream - documentation not supported

PYE/MWRP/M1 - Bias in Ground Relative Humidity Measurement

On June 17 2005, the MWRP was re-installed at PYE after the Super Blower was replaced by 
the old style dew blower. The relative humidity ground sensor in the dew blower is not as 
accurate. This resulted in a negative relative humidity bias of about 5.9 %. In other 
words the MWRP sensor was underestimating the relative humidity. The bias was determined by 
comparing MWRP measurements with SMET and radiosonde measurements. The MP.cfg file for 
the MWRP was changed to reflect this bias on 09/02/2005 and will take effect on 09/03/2005 
0000 GMT

• AVHRR satellite images for Darwin from BOM (RAW)(raw)

• Density, water vapor, at instrument height (1 or 2 m)(surfaceWaterVaporDensity)
• Humidity, relative, at instrument height (1 or 2 m)(surfaceRelativeHumidity)

PYE/MPL/M1 - Erroneous temperatures

The temperature readings for the laser, detector, and instrument are erroneous.  Incorrect 
calibration factors; data should not be used.  This time period is prior to the official 
start of the PYE deployment.

• laser_temp
• detector_temp
• instrument_temp

PYE/AOS/M1 - Data processing problem

The AOS data was reprocessed for the AMF, SGP and NSA sites. There was an error in the 
processing of the corrections for the PSAP absorption signal such that a low pass filter was 
implemented for the scattering data used in these corrections.The difference between the 
corrected and previous data is < 0.05 Mm-1 (below the instrument detection limit) and 
should not have a significant effect on the previous data. Data will be reprocessed at a 
later time when more significant changes to the data processing are implemented.

• Absorption coefficient, blue wavelength, 3 wavelength PSAP, low RH, 10 um size
  cut(Ba_B_Dry_10um_PSAP3W_1)
• Absorption coefficient, blue wavelength, 3 wavelength PSAP, low RH, 1 um size
  cut(Ba_B_Dry_1um_PSAP3W_1)
• Absorption coefficient, red wavelength, 3 wavelength PSAP, low RH, 10 um size
  cut(Ba_R_Dry_10um_PSAP3W_1)
• Absorption coefficient, green wavelength, 3 wavelength PSAP, low RH, 10 um size
  cut(Ba_G_Dry_10um_PSAP3W_1)
• Aerosol light absorption coefficient, green channel, 1 um particle diameter(Ba_G_Dry_1um_PSAP1W_1)
• Aerosol light absorption coefficient, green channel, 10 um particle diameter(Ba_G_Dry_10um_PSAP1W_1)
• Absorption coefficient, green wavelength, 3 wavelength PSAP, low RH, 1 um size
  cut(Ba_G_Dry_1um_PSAP3W_1)
• Absorption Coefficient Red, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_R_Dry_1um_PSAP3W_1)

• Aerosol light absorption coefficient, green channel, 1 um particle diameter(Ba_G_Dry_1um_PSAP1W_1)
• Aerosol light absorption coefficient, green channel, 10 um particle diameter(Ba_G_Dry_10um_PSAP1W_1)

• Absorption Coefficient Red, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_R_Dry_1um_PSAP3W_1)
• Aerosol light absorption coefficient, green channel, 10 um particle diameter(Ba_G_Dry_10um_PSAP1W_1)
• Absorption coefficient, blue wavelength, 3 wavelength PSAP, low RH, 10 um size
  cut(Ba_B_Dry_10um_PSAP3W_1)
• Absorption coefficient, red wavelength, 3 wavelength PSAP, low RH, 10 um size
  cut(Ba_R_Dry_10um_PSAP3W_1)
• Absorption coefficient, green wavelength, 3 wavelength PSAP, low RH, 1 um size
  cut(Ba_G_Dry_1um_PSAP3W_1)
• Absorption coefficient, green wavelength, 3 wavelength PSAP, low RH, 10 um size
  cut(Ba_G_Dry_10um_PSAP3W_1)
• Aerosol light absorption coefficient, green channel, 1 um particle diameter(Ba_G_Dry_1um_PSAP1W_1)
• Absorption coefficient, blue wavelength, 3 wavelength PSAP, low RH, 1 um size
  cut(Ba_B_Dry_1um_PSAP3W_1)