TWP/VCEIL/C2 - Nauru Vceil data suspect

During this period the ceilometer began producing a cross-talk warning. Since it is a 
warning, some of the data are OK. However, the instrument began to be limited to detecting 
clouds only about 2 km above the ground.

• Aerosol backscatter coefficient at 355 nm(backscatter)
• Flag indicating aeri retrieval status(status_flag)
• Third cloud base height(third_cbh)
• Lowest cloud base height detected.(first_cbh)
• Warning and alarm status bits(status_string)
• range(range)
• Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
• Vertical visibility(vertical_visibility)
• Altitude of highest signal(alt_highest_signal)
• Second lowest cloud base height(second_cbh)
• Backscatter sum(sum_backscatter)

• Altitude of highest signal(alt_highest_signal)
• Flag indicating aeri retrieval status(status_flag)
• Backscatter sum(sum_backscatter)
• range(range)
• Warning and alarm status bits(status_string)
• Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
• Vertical visibility(vertical_visibility)
• Detection status. See details(detection_status)
• Third cloud base height(third_cbh)
• Aerosol backscatter coefficient at 355 nm(backscatter)
• Second lowest cloud base height(second_cbh)

TWP/VCEIL/C2 - Power outage in I-Van resulted in Missing Data

I forgot to put in the daily report that we took the I van down yesterday to replace the 
fans in the Clary UPS. This was from 2300z on 24May03 to 0010z on 25May03. Instruments 
affected :

MPL
Ceilometer
MWR
WSI
TSI

Rex

• null(Raw data stream - documentation not supported)

• Aerosol backscatter coefficient at 355 nm(backscatter)
• Warning and alarm status bits(status_string)
• lon(lon)
• Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
• Laser temperature(laser_temperature)
• Altitude of highest signal(alt_highest_signal)
• 6 character string describing instrument measurement parameters(measurement_parameters)
• Second lowest cloud base height(second_cbh)
• GPS raw data filename(filename)
• Detection status. See details(detection_status)
• lat(lat)
• Dummy altitude for Zeb(alt)
• Flag indicating aeri retrieval status(status_flag)
• Percentage of nominal factory setting (0 to 999%)(laser_pulse_energy)
• Third cloud base height(third_cbh)
• base time(base_time)
• Lowest cloud base height detected.(first_cbh)
• range(range)
• Millivolts at internal ADC input (0 to 2500)(background_light)

• Flag indicating aeri retrieval status(status_flag)
• lon(lon)
• base time(base_time)
• Millivolts at internal ADC input (0 to 2500)(background_light)
• Aerosol backscatter coefficient at 355 nm(backscatter)
• Laser temperature(laser_temperature)
• Lowest cloud base height detected.(first_cbh)
• Altitude of highest signal(alt_highest_signal)
• Backscatter sum(sum_backscatter)
• Millivolts at internal ADC input(window_contamination)
• Degrees from vertical (0 to +90)(tilt_angle)
• range(range)
• Warning and alarm status bits(status_string)
• Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
• lat(lat)
• Vertical visibility(vertical_visibility)
• Detection status. See details(detection_status)
• Time offset of tweaks from base_time(time_offset)
• 6 character string describing instrument measurement parameters(measurement_parameters)
• Dummy altitude for Zeb(alt)
• Third cloud base height(third_cbh)
• Percentage of nominal factory setting (0 to 999%)(laser_pulse_energy)
• Second lowest cloud base height(second_cbh)
• GPS raw data filename(filename)