DQRs for Session: 138226 User:bsyin1Completed: 10-21-2011

Data Quality Reports for Session: 138226 User: bsyin1 Completed: 10/21/2011

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D001107.2	NSA/C1 data loss due to cut fiber optic cable	nsaorgC1.a1, nsapwsC1.a0, nsamettwrC1.a1
D011119.1	NSA/PWS/C1 - Present Weather Sensor Calibration/Checks	nsapwsC1.a1, nsapwsC1.b1
D011128.2	NSA/PWS/C1 - Calibration drift	nsapwsC1.a1
D020424.1	NSA/METTWRC1 - METTWRCQ DATA REPORTED AS -9999	nsaorgC1.a1, nsaorgC1.b1, nsapwsC1.a1, nsapwsC1.b1, nsamettwrC1.a1, nsamettwrC1.b1
D020424.2	NSA/METTWRC1 - METTWRC1 NO DATA COLLECTED FROM TOWER	nsaorgC1.a1, nsaorgC1.b1, nsapwsC1.a1, nsapwsC1.b1, nsamettwrC1.a1, nsamettwrC1.b1
D020703.2	NSA/ORG/C1 - Optical Rain Gauge incorrect at very low temperatures	nsaorgC1.a1, nsaorgC1.b1
D020703.3	NSA/ORG/C1 - Optical Rain Gauge incorrect at very low temperatures	nsaorgC1.a1
D030411.4	NSA/C2 - Missing met, pws, snodep data due to comm error	nsapwsC2.a1, nsapwsC2.b1, nsasnodepC2.a1, nsamettiptwrC2.a1, nsamettiptwrC2.b1
D030613.1	NSA/PWS/C1 - C1/BARROW PWS WORKING INTERMITTENTLY	nsapwsC1.a1, nsapwsC1.b1
D040722.3	NSA/METTWR/C2 - Chilled Mirror grounding and timing issues	nsamettwr2hC2.b1
D041004.1	NSA/METTWR/C2 - Data Incorrect during Maintenance	nsamettwr2hC2.b1
D041004.2	NSA/METTWR/C2 - All Data Missing or Incorrect during Maintenance	nsamettwr2hC2.b1
D041004.3	NSA/METTWR/C2 - PWS Data Suspect	nsamettwr2hC2.b1
D041112.1	NSA/METTWR/C2 - Instrument problem	nsamettwr2hC2.b1
D050224.1	NSA/METTWR/C2 - Tower Lowered	nsamettwr2hC2.b1
D050527.3	NSA/METTWR/C2 - Incorrect Maximum for Precip Values	nsamettwr2hC2.b1
D050603.2	NSA/METTWR/C2 - CMH Data Missing During Calibration	nsamettwr2hC2.b1
D050829.1	NSA/METTWR/C2 - Tower Lowered, Data Not Representative	nsamettwr2hC2.b1
D060223.2	NSA/METTWR/C2 - Wind speed values artificially low	nsamettwr2hC2.b1
D060223.3	NSA/METTWR/C2 - CMH Data incorrect	nsamettwr2hC2.b1
D060223.4	NSA/METTWR/C2 - PWS data incorrect	nsamettwr2hC2.b1
D060406.2	NSA/METTWR/C2 - CMH Intake Fan Failure	nsamettwr2hC2.b1
D060426.2	NSA/METTWR/C2 - CMH Data Suspect	nsamettwr2hC2.b1
D060426.4	NSA/METTWR/C2 - CMH Data Suspect	nsamettwr2hC2.b1
D060818.1	NSA/METTWR/C2 - Reprocess: Barometric Data Changed from hPa to kPa	nsamettwr2hC2.b1
D060913.2	NSA/METTWR/C2 - CMH data missing and/or incorrect during maintenance.	nsamettwr2hC2.b1
D060913.3	NSA/METTWR/C2 - PWS data missing/incorrect due to maintenance.	nsamettwr2hC2.b1
D060913.4	NSA/METTWR/C2 - Met data incorrect due to tower being lowered for maintenance.	nsamettwr2hC2.b1
D061128.1	NSA/METTWR/C2 - 2m Temp/RH sensor blocked with snow	nsamettwr2hC2.b1

DQRID : D001107.2

Start Date	Start Time	End Date	End Time
03/14/2000	0000	04/06/2000	2359

Subject:	NSA/C1 data loss due to cut fiber optic cable
DataStreams:	nsaorgC1.a1, nsapwsC1.a0, nsamettwrC1.a1
Description:	The fiber optic line connecting the MET TWR to the data collection facility was accidentally cut during snow removal. Data are unrecoverable.
Measurements:	nsapwsC1.a0: Precipitation rate(precip_rate) One Minute Visibility(one_minute_visibility) Cumulative Liquid Water Equivalent(cumul_liq_water_equiv) ten_min_pw_code_out_of_range_error one_minute_PW_code one_min_pw_code_out_of_range_error pws_read_timeout_error lon alt one_hour_PW_code pws_serial_error one_hour_pw_code_out_of_range_error cumul_snow_out_of_range_error Ten Minute Visibility(ten_minute_visibility) ten_minute_PW_code ten_minute_vis_out_of_range_error Cumulative Snow(cumulative_snow) filename time_offset cumul_liq_water_equiv_out_of_range_err lat one_minute_vis_out_of_range_error present_weather_sensor_NWS_code precip_rate_out_of_range_error base_time nsamettwrC1.a1: Barometric Pressure(atmos_pressure) Maximum Wind Direction(wind_dir_max) Mean Vapor Pressure(vap_pres_mean) alt wind_spd_sd Maximum Vapor Pressure(vap_pres_max) Mean Dew Point Temperature(dew_pt_temp_mean) base_time relh_sd dew_pt_temp_sd lon win_spd_out_of_range_error temp_out_of_range_error dew_pt_temp_out_of_range_error temp_hardware_error filename vap_pres_out_of_range_error Temperature minimum(temp_min) Temperature maximum(temp_max) Relative humidity maximum(relh_max) time_offset Maximum Dew Point Temperature(dew_pt_temp_max) win_dir_out_of_range_error vap_pres_sd Vector-averaged Wind Speed(wind_spd_vec_avg) Relative humidity minimum(relh_min) internal_temp_out_of_range_error Vector-averaged Wind Direction(wind_dir_vec_avg) atmos_pressure_out_of_range_error Minimum Wind Speed(wind_spd_min) wind_dir_sd Mean Wind Speed(wind_spd_mean) temp_sd Minimum Wind Direction(wind_dir_min) relh_out_of_range_error atmos_pressure_read_timeout_error atmos_pressure_PTB_serial_error read_timeout_count Mean Air Temperature or Hardware Error(temp_mean) Minimum Dew Point Temperature(dew_pt_temp_min) Minimum Vapor Pressure(vap_pres_min) Relative humidity mean(relh_mean) Maximum Wind Speed(wind_spd_max) lat internal_voltage_out_of_range_error dew_pt_hardware_error nsaorgC1.a1: precip_no_data_error base_time precip_read_timeout_error precip_NWS_code lat precip_out_of_range_error Precipitation rate(precip_rate) alt precip_daily_accum precip_serial_error lon time_offset filename

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DQRID : D011119.1

Start Date	Start Time	End Date	End Time
10/09/2001	2332	10/10/2001	0037

Subject:	NSA/PWS/C1 - Present Weather Sensor Calibration/Checks
DataStreams:	nsapwsC1.a1, nsapwsC1.b1
Description:	During the listed period the Barrow Present Weather Sensor was being checked and calibrated and the data was incorrect. The calibration was off more than 3% previous to the re-calibration.
Measurements:	nsapwsC1.a1: ten_min_pw_code_out_of_range_error Precipitation rate(precip_rate) one_minute_vis_out_of_range_error one_min_pw_code_out_of_range_error Cumulative Liquid Water Equivalent(cumul_liq_water_equiv) one_hour_pw_code_out_of_range_error cumul_snow_out_of_range_error Ten Minute Visibility(ten_minute_visibility) cumul_liq_water_equiv_out_of_range_err One Minute Visibility(one_minute_visibility) Cumulative Snow(cumulative_snow) precip_rate_out_of_range_error ten_minute_vis_out_of_range_error nsapwsC1.b1: Ten Minute Visibility(ten_minute_visibility) One Minute Visibility(one_minute_visibility) cumul_snow_out_of_range_error ten_minute_vis_out_of_range_error Cumulative Snow(cumulative_snow) one_min_pw_code_out_of_range_error cumul_liq_water_equiv_out_of_range_err one_minute_vis_out_of_range_error one_hour_pw_code_out_of_range_error Cumulative Liquid Water Equivalent(cumul_liq_water_equiv) Precipitation rate(precip_rate) ten_min_pw_code_out_of_range_error precip_rate_out_of_range_error

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DQRID : D011128.2

Start Date	Start Time	End Date	End Time
05/23/2000	0000	10/10/2001	0037

Subject:	NSA/PWS/C1 - Calibration drift
DataStreams:	nsapwsC1.a1
Description:	The calibration of the sensor drifted downwards slightly more than 3% during the more than two years in between calibrations. The drift had no significant impact on the data produced. Note: the period of this DQR extends back prior to 20000503 when the datastream was named nsapwsC1.a0.
Measurements:	nsapwsC1.a1: Cumulative Snow(cumulative_snow) Ten Minute Visibility(ten_minute_visibility) Cumulative Liquid Water Equivalent(cumul_liq_water_equiv) Precipitation rate(precip_rate) One Minute Visibility(one_minute_visibility)

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DQRID : D020424.1

Start Date	Start Time	End Date	End Time
02/04/2002	1006	02/04/2002	1022
02/11/2002	2100	02/21/2002	1929

Subject:	NSA/METTWRC1 - METTWRCQ DATA REPORTED AS -9999
DataStreams:	nsaorgC1.a1, nsaorgC1.b1, nsapwsC1.a1, nsapwsC1.b1, nsamettwrC1.a1, nsamettwrC1.b1
Description:	Due to local power outages caused by winter storms, the Bridgeview collection program became corrupted. All tower data and associated instruments on the tower reported as -9999.
Measurements:	nsapwsC1.a1: Cumulative Liquid Water Equivalent(cumul_liq_water_equiv) Ten Minute Visibility(ten_minute_visibility) present_weather_sensor_NWS_code Precipitation rate(precip_rate) one_min_pw_code_out_of_range_error cumul_snow_out_of_range_error one_minute_PW_code One Minute Visibility(one_minute_visibility) ten_minute_vis_out_of_range_error one_hour_PW_code one_minute_vis_out_of_range_error one_hour_pw_code_out_of_range_error ten_minute_PW_code cumul_liq_water_equiv_out_of_range_err precip_rate_out_of_range_error ten_min_pw_code_out_of_range_error pws_read_timeout_error pws_serial_error Cumulative Snow(cumulative_snow) nsamettwrC1.a1: Maximum Vapor Pressure(vap_pres_max) relh_sd dew_pt_temp_sd win_spd_out_of_range_error temp_out_of_range_error dew_pt_temp_out_of_range_error temp_hardware_error vap_pres_out_of_range_error win_dir_out_of_range_error Vector-averaged Wind Speed(wind_spd_vec_avg) Relative humidity minimum(relh_min) Vector-averaged Wind Direction(wind_dir_vec_avg) Minimum Wind Speed(wind_spd_min) wind_dir_sd temp_sd relh_out_of_range_error atmos_pressure_read_timeout_error atmos_pressure_PTB_serial_error Mean Air Temperature or Hardware Error(temp_mean) serial_port_error Maximum Wind Speed(wind_spd_max) dew_pt_hardware_error Barometric Pressure(atmos_pressure) Maximum Wind Direction(wind_dir_max) Mean Vapor Pressure(vap_pres_mean) wind_spd_sd Mean Dew Point Temperature(dew_pt_temp_mean) Temperature minimum(temp_min) Temperature maximum(temp_max) Relative humidity maximum(relh_max) Maximum Dew Point Temperature(dew_pt_temp_max) vap_pres_sd internal_temp_out_of_range_error atmos_pressure_out_of_range_error Mean Wind Speed(wind_spd_mean) Minimum Wind Direction(wind_dir_min) Minimum Dew Point Temperature(dew_pt_temp_min) Minimum Vapor Pressure(vap_pres_min) Relative humidity mean(relh_mean) internal_voltage_out_of_range_error nsapwsC1.b1: Ten Minute Visibility(ten_minute_visibility) one_min_pw_code_out_of_range_error one_minute_vis_out_of_range_error one_hour_pw_code_out_of_range_error pws_serial_error Cumulative Liquid Water Equivalent(cumul_liq_water_equiv) Precipitation rate(precip_rate) ten_minute_vis_out_of_range_error one_hour_PW_code precip_rate_out_of_range_error One Minute Visibility(one_minute_visibility) Cumulative Snow(cumulative_snow) cumul_liq_water_equiv_out_of_range_err ten_min_pw_code_out_of_range_error pws_read_timeout_error cumul_snow_out_of_range_error present_weather_sensor_NWS_code ten_minute_PW_code one_minute_PW_code nsamettwrC1.b1: Maximum Wind Speed(wind_spd_max) Mean Wind Speed(wind_spd_mean) temp_hardware_error dew_pt_temp_sd vap_pres_sd Mean Air Temperature or Hardware Error(temp_mean) Relative humidity mean(relh_mean) atmos_pressure_out_of_range_error relh_sd Minimum Dew Point Temperature(dew_pt_temp_min) wind_spd_sd temp_out_of_range_error Maximum Wind Direction(wind_dir_max) Maximum Vapor Pressure(vap_pres_max) Minimum Wind Direction(wind_dir_min) Minimum Wind Speed(wind_spd_min) wind_dir_out_of_range_error internal_temp_out_of_range_error Relative humidity maximum(relh_max) Relative humidity minimum(relh_min) wind_spd_out_of_range_error temp_sd Mean Vapor Pressure(vap_pres_mean) wind_dir_sd Vector-averaged Wind Direction(wind_dir_vec_avg) internal_voltage_out_of_range_error Mean Dew Point Temperature(dew_pt_temp_mean) dew_pt_temp_out_of_range_error Temperature maximum(temp_max) atmos_pressure_PTB_serial_error Minimum Vapor Pressure(vap_pres_min) read_timeout_count Temperature minimum(temp_min) Barometric Pressure(atmos_pressure) relh_out_of_range_error dew_pt_hardware_error Vector-averaged Wind Speed(wind_spd_vec_avg) atmos_pressure_read_timeout_error vap_pres_out_of_range_error Maximum Dew Point Temperature(dew_pt_temp_max) nsaorgC1.a1: precip_read_timeout_error Precipitation rate(precip_rate) precip_serial_error precip_no_data_error precip_NWS_code precip_out_of_range_error precip_daily_accum nsaorgC1.b1: precip_out_of_range_error Precipitation rate(precip_rate) precip_NWS_code precip_daily_accum precip_no_data_error precip_serial_error precip_read_timeout_error

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DQRID : D020424.2

Start Date	Start Time	End Date	End Time
02/04/2002	1023	02/11/2002	2059
02/21/2002	1930	02/21/2002	2002

Subject:	NSA/METTWRC1 - METTWRC1 NO DATA COLLECTED FROM TOWER
DataStreams:	nsaorgC1.a1, nsaorgC1.b1, nsapwsC1.a1, nsapwsC1.b1, nsamettwrC1.a1, nsamettwrC1.b1
Description:	Power outage caused fatal errors in the Bridgeview collection program. No data was ingested from the tower and sensors located on the tower.
Measurements:	nsapwsC1.a1: Cumulative Liquid Water Equivalent(cumul_liq_water_equiv) Ten Minute Visibility(ten_minute_visibility) present_weather_sensor_NWS_code Precipitation rate(precip_rate) one_min_pw_code_out_of_range_error cumul_snow_out_of_range_error one_minute_PW_code One Minute Visibility(one_minute_visibility) ten_minute_vis_out_of_range_error one_hour_PW_code one_minute_vis_out_of_range_error one_hour_pw_code_out_of_range_error ten_minute_PW_code cumul_liq_water_equiv_out_of_range_err precip_rate_out_of_range_error ten_min_pw_code_out_of_range_error pws_read_timeout_error pws_serial_error Cumulative Snow(cumulative_snow) nsamettwrC1.a1: Maximum Vapor Pressure(vap_pres_max) relh_sd dew_pt_temp_sd win_spd_out_of_range_error temp_out_of_range_error dew_pt_temp_out_of_range_error temp_hardware_error vap_pres_out_of_range_error win_dir_out_of_range_error Vector-averaged Wind Speed(wind_spd_vec_avg) Relative humidity minimum(relh_min) Vector-averaged Wind Direction(wind_dir_vec_avg) Minimum Wind Speed(wind_spd_min) wind_dir_sd temp_sd relh_out_of_range_error atmos_pressure_read_timeout_error atmos_pressure_PTB_serial_error Mean Air Temperature or Hardware Error(temp_mean) serial_port_error Maximum Wind Speed(wind_spd_max) dew_pt_hardware_error Barometric Pressure(atmos_pressure) Maximum Wind Direction(wind_dir_max) Mean Vapor Pressure(vap_pres_mean) wind_spd_sd Mean Dew Point Temperature(dew_pt_temp_mean) Temperature minimum(temp_min) Temperature maximum(temp_max) Relative humidity maximum(relh_max) Maximum Dew Point Temperature(dew_pt_temp_max) vap_pres_sd internal_temp_out_of_range_error atmos_pressure_out_of_range_error Mean Wind Speed(wind_spd_mean) Minimum Wind Direction(wind_dir_min) Minimum Dew Point Temperature(dew_pt_temp_min) Minimum Vapor Pressure(vap_pres_min) Relative humidity mean(relh_mean) internal_voltage_out_of_range_error nsapwsC1.b1: Ten Minute Visibility(ten_minute_visibility) one_min_pw_code_out_of_range_error one_minute_vis_out_of_range_error one_hour_pw_code_out_of_range_error pws_serial_error Cumulative Liquid Water Equivalent(cumul_liq_water_equiv) Precipitation rate(precip_rate) ten_minute_vis_out_of_range_error one_hour_PW_code precip_rate_out_of_range_error One Minute Visibility(one_minute_visibility) Cumulative Snow(cumulative_snow) cumul_liq_water_equiv_out_of_range_err ten_min_pw_code_out_of_range_error pws_read_timeout_error cumul_snow_out_of_range_error present_weather_sensor_NWS_code ten_minute_PW_code one_minute_PW_code nsamettwrC1.b1: Maximum Wind Speed(wind_spd_max) Mean Wind Speed(wind_spd_mean) temp_hardware_error dew_pt_temp_sd vap_pres_sd Mean Air Temperature or Hardware Error(temp_mean) Relative humidity mean(relh_mean) atmos_pressure_out_of_range_error relh_sd Minimum Dew Point Temperature(dew_pt_temp_min) wind_spd_sd temp_out_of_range_error Maximum Wind Direction(wind_dir_max) Maximum Vapor Pressure(vap_pres_max) Minimum Wind Direction(wind_dir_min) Minimum Wind Speed(wind_spd_min) wind_dir_out_of_range_error internal_temp_out_of_range_error Relative humidity maximum(relh_max) Relative humidity minimum(relh_min) wind_spd_out_of_range_error temp_sd Mean Vapor Pressure(vap_pres_mean) wind_dir_sd Vector-averaged Wind Direction(wind_dir_vec_avg) internal_voltage_out_of_range_error Mean Dew Point Temperature(dew_pt_temp_mean) dew_pt_temp_out_of_range_error Temperature maximum(temp_max) atmos_pressure_PTB_serial_error Minimum Vapor Pressure(vap_pres_min) read_timeout_count Temperature minimum(temp_min) Barometric Pressure(atmos_pressure) relh_out_of_range_error dew_pt_hardware_error Vector-averaged Wind Speed(wind_spd_vec_avg) atmos_pressure_read_timeout_error vap_pres_out_of_range_error Maximum Dew Point Temperature(dew_pt_temp_max) nsaorgC1.a1: precip_read_timeout_error Precipitation rate(precip_rate) precip_serial_error precip_no_data_error precip_NWS_code precip_out_of_range_error precip_daily_accum nsaorgC1.b1: precip_out_of_range_error Precipitation rate(precip_rate) precip_NWS_code precip_daily_accum precip_no_data_error precip_serial_error precip_read_timeout_error

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DQRID : D020703.2

Start Date	Start Time	End Date	End Time
04/01/2001	0000	10/13/2003	1946

Subject:	NSA/ORG/C1 - Optical Rain Gauge incorrect at very low temperatures
DataStreams:	nsaorgC1.a1, nsaorgC1.b1
Description:	The ORG reports precipitation rates that are more than 2 orders of magnitude greater than those reported by the present weather sensor when the temperature drops below -25 C. Examples of this error can be seen in the data for January 11-13, 2000, however the problem is not isolated to these days. A drift occurs when temps are in the range of -25 C to -40 C that exceeds the maximum drift allowed/expected for the instrument. The drift is then reported as precipitation. The manufacturer of the instrument has not yet been able to identify a fix for the problem.
Measurements:	nsaorgC1.b1: precip_out_of_range_error Precipitation rate(precip_rate) precip_serial_error precip_NWS_code precip_daily_accum precip_read_timeout_error precip_no_data_error nsaorgC1.a1: precip_NWS_code precip_daily_accum precip_serial_error precip_no_data_error precip_out_of_range_error precip_read_timeout_error Precipitation rate(precip_rate)

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DQRID : D020703.3

Start Date	Start Time	End Date	End Time
03/20/1998	0101	03/31/2001	2359

Subject:	NSA/ORG/C1 - Optical Rain Gauge incorrect at very low temperatures
DataStreams:	nsaorgC1.a1
Description:	The ORG reports precipitation rates that are more than 2 orders of magnitude greater than those reported by the present weather sensor when the temperature drops below -25 C. Examples of this error can be seen in the data for January 11-13, 2000, however the problem is not isolated to these days. A drift occurs when temps are in the range of -25 C to -40 C that exceeds the maximum drift allowed/expected for the instrument. The drift is then reported as precipitation. The manufacturer of the instrument has not yet been able to identify a fix for the problem.
Measurements:	nsaorgC1.a1: precip_NWS_code precip_daily_accum precip_out_of_range_error precip_serial_error precip_read_timeout_error precip_no_data_error Precipitation rate(precip_rate)

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DQRID : D030411.4

Start Date	Start Time	End Date	End Time
11/25/2002	1430	03/26/2003	2229

Subject:	NSA/C2 - Missing met, pws, snodep data due to comm error
DataStreams:	nsapwsC2.a1, nsapwsC2.b1, nsasnodepC2.a1, nsamettiptwrC2.a1, nsamettiptwrC2.b1
Description:	An error in the communication sub-routine of the Bridgeview collection software occurred resulting in data loss from the Snow Depth sensor, Present Weather Sensor and the Barometer.
Measurements:	nsamettiptwrC2.a1: atmos_pressure_read_timeout_error atmos_pressure_PTB_serial_error Barometric Pressure(atmos_pressure) atmos_pressure_out_of_range_error nsamettiptwrC2.b1: Barometric Pressure(atmos_pressure) atmos_pressure_PTB_serial_error atmos_pressure_out_of_range_error atmos_pressure_read_timeout_error nsapwsC2.b1: One Minute Visibility(one_minute_visibility) cumul_liq_water_equiv_out_of_range_err one_hour_pw_code_out_of_range_error ten_minute_vis_out_of_range_error one_min_pw_code_out_of_range_error ten_minute_PW_code Cumulative Liquid Water Equivalent(cumul_liq_water_equiv) precip_rate_out_of_range_error one_minute_PW_code one_hour_PW_code Cumulative Snow(cumulative_snow) pws_read_timeout_error base_time ten_min_pw_code_out_of_range_error cumul_snow_out_of_range_error pws_serial_error Ten Minute Visibility(ten_minute_visibility) Precipitation rate(precip_rate) present_weather_sensor_NWS_code one_minute_vis_out_of_range_error nsasnodepC2.a1: snow_depth_internal_QC snow_depth_serial_error snow_depth_read_timeout_error Snow Depth(snow_depth) snow_depth_out_of_range_error nsapwsC2.a1: ten_minute_PW_code Cumulative Snow(cumulative_snow) present_weather_sensor_NWS_code pws_serial_error one_min_pw_code_out_of_range_error One Minute Visibility(one_minute_visibility) pws_read_timeout_error Ten Minute Visibility(ten_minute_visibility) one_hour_pw_code_out_of_range_error one_minute_PW_code Cumulative Liquid Water Equivalent(cumul_liq_water_equiv) cumul_snow_out_of_range_error ten_min_pw_code_out_of_range_error ten_minute_vis_out_of_range_error cumul_liq_water_equiv_out_of_range_err one_minute_vis_out_of_range_error Precipitation rate(precip_rate) one_hour_PW_code precip_rate_out_of_range_error

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DQRID : D030613.1

Start Date	Start Time	End Date	End Time
11/17/2002	0200	04/22/2003	1918

Subject:	NSA/PWS/C1 - C1/BARROW PWS WORKING INTERMITTENTLY
DataStreams:	nsapwsC1.a1, nsapwsC1.b1
Description:	The PWS worked intermittently throughout entire period. Extensive troubleshooting located a broken wire in the RS-232 connector. Contact was made intermittently allowing some data to be recorded.
Measurements:	nsapwsC1.a1: ten_min_pw_code_out_of_range_error one_hour_PW_code Precipitation rate(precip_rate) pws_read_timeout_error one_min_pw_code_out_of_range_error one_minute_vis_out_of_range_error Cumulative Liquid Water Equivalent(cumul_liq_water_equiv) one_hour_pw_code_out_of_range_error cumul_snow_out_of_range_error pws_serial_error Ten Minute Visibility(ten_minute_visibility) one_minute_PW_code present_weather_sensor_NWS_code ten_minute_PW_code cumul_liq_water_equiv_out_of_range_err One Minute Visibility(one_minute_visibility) Cumulative Snow(cumulative_snow) ten_minute_vis_out_of_range_error precip_rate_out_of_range_error nsapwsC1.b1: Ten Minute Visibility(ten_minute_visibility) One Minute Visibility(one_minute_visibility) pws_read_timeout_error cumul_snow_out_of_range_error ten_minute_vis_out_of_range_error Cumulative Snow(cumulative_snow) one_min_pw_code_out_of_range_error present_weather_sensor_NWS_code cumul_liq_water_equiv_out_of_range_err one_minute_vis_out_of_range_error one_hour_pw_code_out_of_range_error pws_serial_error one_hour_PW_code ten_minute_PW_code Cumulative Liquid Water Equivalent(cumul_liq_water_equiv) one_minute_PW_code ten_min_pw_code_out_of_range_error Precipitation rate(precip_rate) precip_rate_out_of_range_error

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DQRID : D040722.3

Start Date	Start Time	End Date	End Time
11/06/2003	1719	07/14/2004	1500

Subject:	NSA/METTWR/C2 - Chilled Mirror grounding and timing issues
DataStreams:	nsamettwr2hC2.b1
Description:	From beginning of data stream, the chilled mirror data was intermittent at best. Problems with grounding and timing issues between logging instruments caused data to be incorrect and at times missing.
Measurements:	nsamettwr2hC2.b1: VPCMH CMHDP SatVPCMH CMHRH CMHTemp

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DQRID : D041004.1

Start Date	Start Time	End Date	End Time
09/17/2004	0130	09/17/2004	0411

Subject:	NSA/METTWR/C2 - Data Incorrect during Maintenance
DataStreams:	nsamettwr2hC2.b1
Description:	The 10m tower was lowered for 2-year change-out of the met sensors. Data during this time is not representative.
Measurements:	nsamettwr2hC2.b1: RefTemp_AVG RH2m_STD Wind speed, vector-averaged(WinSpeed_U_WVT) DP5m_STD Relative humidity, average, at 2-m height(RH5m_AVG) QLIVolt_AVG WinDir_SDU_WVT VP5m_STD Temperature, air, average, at 2-m height(T2m_AVG) T2m_STD Wind speed, mean(WinSpeed_S_WVT) Temperature, dew point, average, at 5-m height(DP5m_AVG) VP2m_STD T5m_STD Pressure, vapor, at 2-m height(VP2m_AVG) RH5m_STD SatVPCMH Relative humidity, average, at 2-m height(RH2m_AVG) Pressure, vapor, at 5-m height(VP5m_AVG) DP2m_STD Temperature, dew point, average, at 2-m height(DP2m_AVG) Wind direction, vector-averaged(WinDir_DU_WVT) Temperature, air, average, at 5-m height(T5m_AVG)

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DQRID : D041004.2

Start Date	Start Time	End Date	End Time
09/17/2004	2217	09/18/2004	0047
09/18/2004	2324	09/19/2004	0307

Subject:	NSA/METTWR/C2 - All Data Missing or Incorrect during Maintenance
DataStreams:	nsamettwr2hC2.b1
Description:	All data incorrect or missing due to change of the Serial Data multiplexer and the Vaisala QLI data collector during these times.
Measurements:	nsamettwr2hC2.b1: RefTemp_AVG RH2m_STD Relative humidity, average, at 2-m height(RH5m_AVG) QLIVolt_AVG PWcod15mi VP5m_STD Precipitation Rate(PCPRate) CMHTemp T5m_STD VPCMH CMHDP Pressure, vapor, at 5-m height(VP5m_AVG) DP2m_STD Temperature, dew point, average, at 2-m height(DP2m_AVG) Wind direction, vector-averaged(WinDir_DU_WVT) PWCod1hr batt_volt CumSnow Wind speed, vector-averaged(WinSpeed_U_WVT) DP5m_STD CumH2O WinDir_SDU_WVT CMHRH Temperature, air, average, at 2-m height(T2m_AVG) T2m_STD Wind speed, mean(WinSpeed_S_WVT) Temperature, dew point, average, at 5-m height(DP5m_AVG) VP2m_STD Pressure, atmospheric(AtmPress) Pressure, vapor, at 2-m height(VP2m_AVG) PWSAlarm RH5m_STD SatVPCMH InstPWCod Relative humidity, average, at 2-m height(RH2m_AVG) Visibility, 1 minute average(AvgVis1mi) Temperature, air, average, at 5-m height(T5m_AVG) Visibility, 10 minute average(AvgVis10m)

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DQRID : D041004.3

Start Date	Start Time	End Date	End Time
09/18/2004	0048	09/18/2004	2323
09/19/2004	0307	09/19/2004	1530

Subject:	NSA/METTWR/C2 - PWS Data Suspect
DataStreams:	nsamettwr2hC2.b1
Description:	Data from the PWS is suspect during these times due to problems when the system was re-calibrated. System was corrected.
Measurements:	nsamettwr2hC2.b1: PWCod1hr CumSnow PWSAlarm CumH2O PWcod15mi InstPWCod Visibility, 1 minute average(AvgVis1mi) Precipitation Rate(PCPRate) Visibility, 10 minute average(AvgVis10m)

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DQRID : D041112.1

Start Date	Start Time	End Date	End Time
11/11/2004	2017	11/12/2004	2246

Subject:	NSA/METTWR/C2 - Instrument problem
DataStreams:	nsamettwr2hC2.b1
Description:	CMH and PWS stopped reporting. Communication cable found to be broken.
Measurements:	nsamettwr2hC2.b1: PWCod1hr CumSnow CumH2O PWcod15mi CMHRH Precipitation Rate(PCPRate) CMHTemp VPCMH CMHDP PWSAlarm SatVPCMH InstPWCod Visibility, 1 minute average(AvgVis1mi) Visibility, 10 minute average(AvgVis10m)

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DQRID : D050224.1

Start Date	Start Time	End Date	End Time
02/15/2005	2250	02/15/2005	2330

Subject:	NSA/METTWR/C2 - Tower Lowered
DataStreams:	nsamettwr2hC2.b1
Description:	The tower was lowered to install the GroundMFR. Data from the T/RH probes and the wind speed and direction sensors are not representative during the time period.
Measurements:	nsamettwr2hC2.b1: RH2m_STD Wind speed, vector-averaged(WinSpeed_U_WVT) DP5m_STD Relative humidity, average, at 2-m height(RH5m_AVG) WinDir_SDU_WVT VP5m_STD Temperature, air, average, at 2-m height(T2m_AVG) T2m_STD Wind speed, mean(WinSpeed_S_WVT) Temperature, dew point, average, at 5-m height(DP5m_AVG) VP2m_STD T5m_STD Pressure, vapor, at 2-m height(VP2m_AVG) RH5m_STD Relative humidity, average, at 2-m height(RH2m_AVG) Pressure, vapor, at 5-m height(VP5m_AVG) DP2m_STD Temperature, dew point, average, at 2-m height(DP2m_AVG) Wind direction, vector-averaged(WinDir_DU_WVT) Temperature, air, average, at 5-m height(T5m_AVG)

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DQRID : D050527.3

Start Date	Start Time	End Date	End Time
11/06/2003	0000	05/26/2005	1014

Subject:	NSA/METTWR/C2 - Incorrect Maximum for Precip Values
DataStreams:	nsamettwr2hC2.b1
Description:	The max values for cumulative rain sum of 99 mm and the rain rate of 999 mm/hr are incorrect. In communication with the manufacturer it has been found that the manual was in error. The actual max values of the cumulative rain sum is 99.99 mm and the rain rate is 999.99 mm/hr.
Measurements:	nsamettwr2hC2.b1: CumH2O Precipitation Rate(PCPRate)

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DQRID : D050603.2

Start Date	Start Time	End Date	End Time
06/03/2005	0123	06/03/2005	0229

Subject:	NSA/METTWR/C2 - CMH Data Missing During Calibration
DataStreams:	nsamettwr2hC2.b1
Description:	The CMH was removed for it's bi-annual cleaning and calibration.
Measurements:	nsamettwr2hC2.b1: VPCMH CMHDP SatVPCMH CMHRH CMHTemp

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DQRID : D050829.1

Start Date	Start Time	End Date	End Time
08/22/2005	1830	08/22/2005	1850

Subject:	NSA/METTWR/C2 - Tower Lowered, Data Not Representative
DataStreams:	nsamettwr2hC2.b1
Description:	The tower was lowered to remove equipment. The data from the wind sensors and T/RH probes were not representative.
Measurements:	nsamettwr2hC2.b1: RH2m_STD Wind speed, vector-averaged(WinSpeed_U_WVT) DP5m_STD Relative humidity, average, at 2-m height(RH5m_AVG) WinDir_SDU_WVT VP5m_STD Temperature, air, average, at 2-m height(T2m_AVG) T2m_STD Wind speed, mean(WinSpeed_S_WVT) Temperature, dew point, average, at 5-m height(DP5m_AVG) VP2m_STD T5m_STD Pressure, vapor, at 2-m height(VP2m_AVG) RH5m_STD Relative humidity, average, at 2-m height(RH2m_AVG) Pressure, vapor, at 5-m height(VP5m_AVG) DP2m_STD Temperature, dew point, average, at 2-m height(DP2m_AVG) Wind direction, vector-averaged(WinDir_DU_WVT) Temperature, air, average, at 5-m height(T5m_AVG)

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DQRID : D060223.2

Start Date	Start Time	End Date	End Time
02/19/2006	1900	02/20/2006	1627

Subject:	NSA/METTWR/C2 - Wind speed values artificially low
DataStreams:	nsamettwr2hC2.b1
Description:	Wind speed values were artificially low due to snow/ice accumulation on the anemometer cups during blizzard conditions. The heaters on the cups were not able to keep up with conditions.
Measurements:	nsamettwr2hC2.b1: Wind speed, vector-averaged(WinSpeed_U_WVT) Wind speed, mean(WinSpeed_S_WVT)

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DQRID : D060223.3

Start Date	Start Time	End Date	End Time
02/19/2006	1405	02/20/2006	1107
02/21/2006	0619	02/21/2006	2255

Subject:	NSA/METTWR/C2 - CMH Data incorrect
DataStreams:	nsamettwr2hC2.b1
Description:	CMH data was incorrect due to blockage of intake by heavy, wet snow during blizzard conditions.
Measurements:	nsamettwr2hC2.b1: VPCMH CMHDP SatVPCMH CMHRH CMHTemp

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DQRID : D060223.4

Start Date	Start Time	End Date	End Time
02/21/2006	1113	02/21/2006	2359

Subject:	NSA/METTWR/C2 - PWS data incorrect
DataStreams:	nsamettwr2hC2.b1
Description:	The Present Weather Sensor measurement optics were blocked by heavy, wet snow during blizzard conditions.
Measurements:	nsamettwr2hC2.b1: PWCod1hr CumSnow PWSAlarm CumH2O PWcod15mi InstPWCod Visibility, 1 minute average(AvgVis1mi) Precipitation Rate(PCPRate) Visibility, 10 minute average(AvgVis10m)

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DQRID : D060406.2

Start Date	Start Time	End Date	End Time
04/04/2006	1914	04/06/2006	2025

Subject:	NSA/METTWR/C2 - CMH Intake Fan Failure
DataStreams:	nsamettwr2hC2.b1
Description:	Intake fan failing causing poor readings from the CMH.
Measurements:	nsamettwr2hC2.b1: VPCMH CMHDP SatVPCMH CMHRH CMHTemp

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DQRID : D060426.2

Start Date	Start Time	End Date	End Time
04/06/2006	2212	04/11/2006	1812

Subject:	NSA/METTWR/C2 - CMH Data Suspect
DataStreams:	nsamettwr2hC2.b1
Description:	CMH data was suspect due to incorrect intake fan installed. Proper spares were not on hand.
Measurements:	nsamettwr2hC2.b1: VPCMH CMHDP SatVPCMH CMHRH CMHTemp

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DQRID : D060426.4

Start Date	Start Time	End Date	End Time
04/20/2006	1535	04/20/2006	2110

Subject:	NSA/METTWR/C2 - CMH Data Suspect
DataStreams:	nsamettwr2hC2.b1
Description:	CMH data was suspect due to blockage of intake by snow.
Measurements:	nsamettwr2hC2.b1: VPCMH CMHDP SatVPCMH CMHRH CMHTemp

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DQRID : D060818.1

Start Date	Start Time	End Date	End Time
11/06/2003	0000	07/12/2006	1853

Subject:	NSA/METTWR/C2 - Reprocess: Barometric Data Changed from hPa to kPa
DataStreams:	nsamettwr2hC2.b1
Description:	Barometric pressure data was converted from hPa to kPa in order to standardize the measurement units among ARM sites and to conform to accepted standard units determined by the scientific community.
Measurements:	nsamettwr2hC2.b1: Pressure, atmospheric(AtmPress)

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DQRID : D060913.2

Start Date	Start Time	End Date	End Time
08/11/2006	1756	08/11/2006	1925

Subject:	NSA/METTWR/C2 - CMH data missing and/or incorrect during maintenance.
DataStreams:	nsamettwr2hC2.b1
Description:	CMH measured data was missing and the derived variables were incorrect due to routine maintenance.
Measurements:	nsamettwr2hC2.b1: VPCMH CMHDP SatVPCMH CMHRH CMHTemp

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DQRID : D060913.3

Start Date	Start Time	End Date	End Time
08/21/2006	2228	08/21/2006	2329
08/22/2006	0233	08/22/2006	0301
08/23/2006	2214	08/23/2006	2219
08/24/2006	1617	08/24/2006	1628
08/25/2006	0257	08/25/2006	0309
09/01/2006	0158	09/01/2006	0331

Subject:	NSA/METTWR/C2 - PWS data missing/incorrect due to maintenance.
DataStreams:	nsamettwr2hC2.b1
Description:	Present Weather Sensor data was missing or incorrect due to maintenance activities repeated approximately daily as we were trying to correct another problem.
Measurements:	nsamettwr2hC2.b1: PWCod1hr CumSnow PWSAlarm CumH2O PWcod15mi InstPWCod Visibility, 1 minute average(AvgVis1mi) Precipitation Rate(PCPRate) Visibility, 10 minute average(AvgVis10m) CMHTemp

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DQRID : D060913.4

Start Date	Start Time	End Date	End Time
08/11/2006	1952	08/11/2006	2006

Subject:	NSA/METTWR/C2 - Met data incorrect due to tower being lowered for maintenance.
DataStreams:	nsamettwr2hC2.b1
Description:	Data from the tower is not representative of local conditions due to the tower being lowered for radiometer change. Sensors not attached to the tower such as the Present Weather Sensor, the Chilled Mirror Hygrometer and the Barometer were not affected.
Measurements:	nsamettwr2hC2.b1: RH2m_STD Wind speed, vector-averaged(WinSpeed_U_WVT) DP5m_STD Relative humidity, average, at 2-m height(RH5m_AVG) WinDir_SDU_WVT VP5m_STD Temperature, air, average, at 2-m height(T2m_AVG) T2m_STD Wind speed, mean(WinSpeed_S_WVT) Temperature, dew point, average, at 5-m height(DP5m_AVG) VP2m_STD T5m_STD Pressure, vapor, at 2-m height(VP2m_AVG) RH5m_STD Relative humidity, average, at 2-m height(RH2m_AVG) Pressure, vapor, at 5-m height(VP5m_AVG) DP2m_STD Temperature, dew point, average, at 2-m height(DP2m_AVG) Wind direction, vector-averaged(WinDir_DU_WVT) Temperature, air, average, at 5-m height(T5m_AVG)

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DQRID : D061128.1

Start Date	Start Time	End Date	End Time
11/27/2006	0608	11/27/2006	2226

Subject:	NSA/METTWR/C2 - 2m Temp/RH sensor blocked with snow
DataStreams:	nsamettwr2hC2.b1
Description:	The 2m RH, Dew Point and Vapor Pressure values are incorrect due to the intake of the aspirated shield being blocked with snow and ice. The RH% values are artificially larger than the 5m and Chilled Mirror values.
Measurements:	nsamettwr2hC2.b1: RH2m_STD Pressure, vapor, at 2-m height(VP2m_AVG) Relative humidity, average, at 2-m height(RH2m_AVG) DP2m_STD Temperature, dew point, average, at 2-m height(DP2m_AVG) VP2m_STD

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