ACX/CCN/CPC/HTDMA/NEPHELOMETER/OZONE/PSAP/M1 - Ship in port

Ship was in port and data were likely impacted by anthropogenic sources.

• Daily values of ozone on each grid cell(ozone)

ACX/OZONE/M1 - Data noisy while ship is under way

Data is noisy at high frequency while ship is under way. Regular daily calibrations show 
the accuracy is correct, only the noise is severe (+/- 5-10 ppbv).

• Daily values of ozone on each grid cell(ozone)

ENA/AOS/C1 - AOS Instrument Repair, Calibration and Modification: Mentor Site Visit

There was visit of 7 AOS instrument mentors to the ENA AOS during this period of 
instrument repair, calibration and modification. Instruments were occasionally off, or with no 
sample flow, or receiving calibration samples, etc. There was no productive sampling of 
ambient air during this period other than for testing. No data should be used for this period 
as ambient samples.

Note: Two datastream are missing. The CAPS Extinction Monitor and the Greenhouse gas 
instrument.

• ozone_bench_temp
• Daily values of ozone on each grid cell(ozone)
• ozone_pressure

ENA/OZONE/C1 - Reprocess: Under reporting ozone concentration

Switching valve developed an internal leak that gradually worsened. Reported instrument 
values are under-representations of the ambient ozone concentration during this period. The 
under reporting worsens from 85% to 77% over the course of this DQR. No corrections have 
been applied at this point.

• Daily values of ozone on each grid cell(ozone)

ENA/C1 - Reprocess: Slightly incorrect location fields

Some of the instruments are being processed with the previous "GRW-Azores" lat/lon/alt 
instead of the new "ENA-Azores" lat/lon/alt. The differences are minor, but will be 
corrected. The respective GRW and ENA lat, lon, and alt values are as follows:
 
GRW  lat = 39.0911 ;
ENA lat = 39.0916 ;
GRW  lon = -28.0297 ;
ENA  lon = -28.0257 ;
GRW  alt = 26 ;
ENA  alt = 30.48 ;

• East longitude(lon)
• North latitude(lat)
• Altitude above mean sea level(alt)

SGP/OZONE/S01 - Filter not changed

Filter not changed. Pressure low and response to calibrations increased. The time before 
the filter change is considered suspect.

• ozone_pressure
• ozone_bench_temp
• Daily values of ozone on each grid cell(ozone)

SGP/S01 - Tower inlet not operational

Inlet not operational in order to change met sensor.

• ozone_pressure
• ozone_bench_temp
• Daily values of ozone on each grid cell(ozone)

AWR/OZONE/M1 - Error changing inlet filter

Operator mistakenly used blue filter separator instead of white filter.  No flow through 
instrument.

• time
• North latitude(lat)
• base_time
• Daily values of ozone on each grid cell(ozone)
• ozone_pressure
• East longitude(lon)
• Altitude above mean sea level(alt)
• ozone_bench_temp
• time_offset

ASI/AOS/M1 - Manifold blower not working

Manifold blower not working, instrument sample flows either zero or different than 
specified. Sampling through the stack not isokinetic.

• ozone_pressure
• North latitude(lat)
• East longitude(lon)
• ozone_bench_temp
• base_time
• time_offset
• Altitude above mean sea level(alt)
• time
• Daily values of ozone on each grid cell(ozone)

ASI/OZONE/PTR-MS/TRACEGAS/M1 - Sampling cabin air

Inlet system turned off.  Sampling cabin air.  No effect on NO/NOx/NOy.

• Daily values of ozone on each grid cell(ozone)

ENA/OZONE/C1 - Air inlet plugged

The zero air inlet was plugged after a leak test.  Mentor failed to identify the problem 
until 2016-07-05.  Data should be valid.

• ozone_bench_temp
• Daily values of ozone on each grid cell(ozone)
• ozone_pressure

ENA/OZONE/C1 - Failing pump

The pump was failing, and the operator attempted a repair.  Eventually, the flow bypassed 
the pump internally and was replaced with an external HTDMA vacuum pump.  Data appear 
valid since the flow only affects the internal calibration source and not the ambient 
measurement.

Internal pump was repaired on 2016-09-20 11:00.  The flow returned to the nominal value 
decreased slightly).  The response to calibration increased proportionally (as expected 
given the lower flow rate and longer residence time in the O3 generator cell).  The 
instrument response to ambient O3 should not be a function of the flow rate.  HOWEVER, a slight 
discontinuity was noted in the ambient O3 values prior to this DQR and following this DQR 
end date.  The amount of uncertainty was judged as <5 ppbv.

• ozone_bench_temp
• Daily values of ozone on each grid cell(ozone)
• ozone_pressure

ENA/OZONE/C1 - Reprocessed and Corrected: enaosozoneC1.a1 to enaaoso3C1.a1

DATA REPROCESSED and CORRECTED: 

The enaaosozone.a1 data was renamed to enaaoso3.a1. In addition to
the rename, we added data from raw data columns that were originally not included. These 
additional columns will be used in subsequent downstream processing.

The data were archived February 2017. Please retrieve the reprocessed data for use in your 
analysis.


ORIGINAL DQR CATEGORY:	Transparent (Does not affect quality)

REPROCESSED and CORRECTED DATA ARCHIVED:2017-02

REPROCESS IDENTIFICATION NUMBER: RID 1493

---------------------------------------------------
--- ORIGINAL DQR DESCRIPTION ---
--------------------------------------------------- 


The enaaosozoneC1.a1 data is being renamed to aoso3.a1. In addition to the 
rename, we are adding data from raw data columns that were missed. These 
additional columns will be used in subsequent downstream processing.

• ozone_bench_temp
• East longitude(lon)
• time_offset
• time
• Daily values of ozone on each grid cell(ozone)
• ozone_pressure
• base_time
• North latitude(lat)
• Altitude above mean sea level(alt)

SGP/OZONE/S01 - Reprocessed and Corrected: sgpaosozoneS01.a1 to sgpaoso3S01.a1

DATA REPROCESSED and CORRECTED: 

The aosozone.a1 data was renamed to aoso3.a1. In addition to
the rename, we added data from raw data columns that were originally not included. These 
additional columns will be used in subsequent downstream processing.

The data were archived February 2017. Please retrieve the reprocessed data for use in your 
analysis.


ORIGINAL DQR CATEGORY:	Transparent (Does not affect quality)

REPROCESSED and CORRECTED DATA ARCHIVED:2017-02

REPROCESS IDENTIFICATION NUMBER: RID 1496

---------------------------------------------------
--- ORIGINAL DQR DESCRIPTION ---
---------------------------------------------------

The sgpaosozoneA01.a1 data is being renamed to aoso3.a1. In addition to 
the rename, we are adding data from raw data columns that were missed. These additional 
columns will be used in subsequent downstream processing.

• ozone_pressure
• East longitude(lon)
• time
• ozone_bench_temp
• North latitude(lat)
• Daily values of ozone on each grid cell(ozone)
• time_offset
• Altitude above mean sea level(alt)
• base_time

AWR/OZONE/M1 - Reprocessed and Corrected: awraosozoneM1.a1 to awraoso3M1.a1

DATA REPROCESSED and CORRECTED: 

The awraosozone.a1 data was renamed to awraoso3.a1. In addition to
the rename, we added data from raw data columns that were originally not included. These 
additional columns will be used in subsequent downstream processing.

The data were archived February 2017. Please retrieve the reprocessed data for use in your 
analysis.


ORIGINAL DQR CATEGORY:	Transparent (Does not affect quality)

REPROCESSED and CORRECTED DATA ARCHIVED:2017-02

REPROCESS IDENTIFICATION NUMBER: RID 1498

---------------------------------------------------
--- ORIGINAL DQR DESCRIPTION ---
---------------------------------------------------

The awraosozoneM1.a1 data is being renamed to aoso3.a1. In addition to 
the rename, we are adding data from raw data columns that were missed. These additional 
columns will be used in subsequent downstream processing.

• time
• North latitude(lat)
• base_time
• Daily values of ozone on each grid cell(ozone)
• ozone_pressure
• East longitude(lon)
• Altitude above mean sea level(alt)
• ozone_bench_temp
• time_offset

ENA/OZONE/C1 - Water condensing in the line

Instrument suffered major oscillations in the signal.  Working with Operator it was 
discovered that the Split System Air Conditioner was blowing directly on the Ozone detector.  
Water was condensing in the line.  The air was redirected and the temperature setpoint 
raised.  This reduced but didn't entirely eliminate the oscillations.

• ozone_bench_temp
• Daily values of ozone on each grid cell(ozone)
• ozone_pressure

ENA/AOS/C1 - Instrument mentors working at the site

Instrument mentors working at the site. Sample lines and electrical connections being 
reconfigured. Instruments that had no work done on them may still be affected.

• ozone_bench_temp
• Daily values of ozone on each grid cell(ozone)
• ozone_pressure

ENA/AOSMET/OZONE/TRACEGAS/C1 - missing data

The Unit 1 computer was found stuck in boot screen and had to be powered off to reboot.  
Data is missing for this period.

• ozone_bench_temp
• East longitude(lon)
• time_offset
• time
• Daily values of ozone on each grid cell(ozone)
• ozone_pressure
• base_time
• North latitude(lat)
• Altitude above mean sea level(alt)

ASI/OZONE/M1 - Not sampling outside air

Inlet turned off (or the blower turned off).  So sampling was not on outside air.

• flow_b
• flow_a
• ozone_pressure
• calibration_level_1
• gas_state
• calibration_level_2
• calibration_level_3
• Ozone pressure(o3_pressure)
• o3_background
• averaging_time
• diagnostic_voltage_mb_15
• pressure_compensation_state
• lamp_level
• diagnostic_voltage_mib_24
• Ozone concentration at STP(o3)
• diagnostic_voltage_mb_minus_3p3
• diagnostic_voltage_mb_5
• ozone_bench_temp
• o3_lamp_temperature
• diagnostic_voltage_mib_5
• lamp_temperature
• diagnostic_voltage_mib_3p3
• temperature_compensation_state
• Daily values of ozone on each grid cell(ozone)
• calibration_level_5
• lamp_voltage_ozonizer
• calibration_level_4
• o3_bench_temperature
• range
• intensity_b
• intensity_a
• diagnostic_voltage_mb_24
• o3_coefficient
• diagnostic_voltage_mib_minus_15
• diagnostic_voltage_mb_3p3
• diagnostic_voltage_mib_15
• o3_flags
• noise_b
• noise_a
• lamp_voltage_bench
• o3_lamp_state

SGP/TRACEGAS/S01 - Instrument

Improper start up following a power failure.  Computers came back up but instruments did 
not restart (by design for Oliktok).  Daily checklists not compiled this period (weekend).

• ozone_pressure
• East longitude(lon)
• time
• ozone_bench_temp
• North latitude(lat)
• Daily values of ozone on each grid cell(ozone)
• time_offset
• Altitude above mean sea level(alt)
• base_time

ENA/OZONE/C1 - missing data and extra calibrations

The 49i ozone instrument in ENA has difficulty with maintaining the data connection and 
the data stream while receiving the commands to do zeros and calibrations and has had gaps 
in the data that interfere with data processing.  During the time range a new version of 
the software that should be better at recovering from the errors was being tested.  There 
is a 2 hour gap in the data and a section of time with zeros and cals every 20 minutes.

• ozone_bench_temp
• Daily values of ozone on each grid cell(ozone)
• ozone_pressure

ACX/OZONE/M1 - Reprocessed and Corrected: acxaosozoneM1.a1 to acxaoso3M1.a1

DATA REPROCESSED and CORRECTED: 

The aosozone.a1 data was renamed to aoso3.a1. In addition to
the rename, we added data from raw data columns that were originally not included. These 
additional columns will be used in subsequent downstream processing.

The data were archived February 2017. Please retrieve the reprocessed data for use in your 
analysis.


ORIGINAL DQR CATEGORY:	Transparent (Does not affect quality)

REPROCESSED and CORRECTED DATA ARCHIVED:2017-02

REPROCESS IDENTIFICATION NUMBER: RID 1525

---------------------------------------------------
--- ORIGINAL DQR DESCRIPTION ---
---------------------------------------------------
The aosozone.a1 data is being renamed to aoso3.a1. In addition to 
the rename, we are adding data from raw data columns that were missed. These additional 
columns will be used in subsequent downstream processing.

• time_offset
• Altitude above mean sea level(alt)
• ozone_pressure
• base_time
• Daily values of ozone on each grid cell(ozone)
• time
• ozone_bench_temp
• East longitude(lon)
• North latitude(lat)

ASI/OZONE/M1 - Reprocessed and Corrected: asiaosozoneM1.a1 to asiaoso3M1.a1

DATA REPROCESSED and CORRECTED: 

The aosozone.a1 data was renamed to aoso3.a1. In addition to
the rename, we added data from raw data columns that were originally not included. These 
additional columns will be used in subsequent downstream processing.

The data were archived February 2017. Please retrieve the reprocessed data for use in your 
analysis.


ORIGINAL DQR CATEGORY:	Transparent (Does not affect quality)

REPROCESSED and CORRECTED DATA ARCHIVED:2017-02

REPROCESS IDENTIFICATION NUMBER: RID 1526

---------------------------------------------------
--- ORIGINAL DQR DESCRIPTION ---
---------------------------------------------------

The aosozone.a1 data is being renamed to aoso3.a1. In addition to 
the rename, we are adding data from raw data columns that were missed. These additional 
columns will be used in subsequent downstream processing.

• ozone_pressure
• North latitude(lat)
• East longitude(lon)
• ozone_bench_temp
• base_time
• time_offset
• Altitude above mean sea level(alt)
• time
• Daily values of ozone on each grid cell(ozone)

ASI/OZONE/TRACEGAS/M1 - Trace gas inlet blower failure

MAOS C Trace gas inlet had the blower die.  Though there are numbers, they should be 
viewed as incorrect.

It also affects the PTR-MS.

• flow_b
• flow_a
• ozone_pressure
• calibration_level_1
• gas_state
• calibration_level_2
• calibration_level_3
• Ozone pressure(o3_pressure)
• o3_background
• averaging_time
• diagnostic_voltage_mb_15
• pressure_compensation_state
• lamp_level
• diagnostic_voltage_mib_24
• Ozone concentration at STP(o3)
• diagnostic_voltage_mb_minus_3p3
• diagnostic_voltage_mb_5
• ozone_bench_temp
• o3_lamp_temperature
• diagnostic_voltage_mib_5
• lamp_temperature
• diagnostic_voltage_mib_3p3
• temperature_compensation_state
• Daily values of ozone on each grid cell(ozone)
• calibration_level_5
• lamp_voltage_ozonizer
• calibration_level_4
• o3_bench_temperature
• range
• intensity_b
• intensity_a
• diagnostic_voltage_mb_24
• o3_coefficient
• diagnostic_voltage_mib_minus_15
• diagnostic_voltage_mb_3p3
• diagnostic_voltage_mib_15
• o3_flags
• noise_b
• noise_a
• lamp_voltage_bench
• o3_lamp_state

ASI/OZONE/TRACEGAS/M1 - Instrument computer failure

Unit three computer failed.  No data recorded until computer rebuilt remotely.

• flow_b
• flow_a
• ozone_pressure
• calibration_level_1
• gas_state
• calibration_level_2
• calibration_level_3
• Ozone pressure(o3_pressure)
• o3_background
• Altitude above mean sea level(alt)
• time_offset
• averaging_time
• diagnostic_voltage_mb_15
• pressure_compensation_state
• lamp_level
• diagnostic_voltage_mib_24
• Ozone concentration at STP(o3)
• diagnostic_voltage_mb_minus_3p3
• diagnostic_voltage_mb_5
• ozone_bench_temp
• base_time
• o3_lamp_temperature
• diagnostic_voltage_mib_5
• lamp_temperature
• diagnostic_voltage_mib_3p3
• temperature_compensation_state
• time
• Daily values of ozone on each grid cell(ozone)
• calibration_level_5
• lamp_voltage_ozonizer
• calibration_level_4
• o3_bench_temperature
• range
• intensity_b
• intensity_a
• diagnostic_voltage_mb_24
• o3_coefficient
• diagnostic_voltage_mib_minus_15
• North latitude(lat)
• diagnostic_voltage_mb_3p3
• diagnostic_voltage_mib_15
• o3_flags
• East longitude(lon)
• noise_b
• noise_a
• lamp_voltage_bench
• o3_lamp_state

ENA/AOS/C1 - Dry air supply intermittently not working

Pentras dry air supply intermittently not working. Dry air missing for the humidigraph and 
the HT-DMA. Dry air supply for those instruments partially replaced by regular undried 
compressed air, lowering the delivery pressure. No direct effect on other instruments seen.

• ozone_bench_temp
• East longitude(lon)
• time_offset
• time
• Daily values of ozone on each grid cell(ozone)
• ozone_pressure
• base_time
• North latitude(lat)
• Altitude above mean sea level(alt)

ASI/OZONE/TRACEGAS/M1 - Inlet blower replacement

Bypass blower off (and replaced)

• flow_b
• flow_a
• ozone_pressure
• calibration_level_1
• gas_state
• calibration_level_2
• calibration_level_3
• Ozone pressure(o3_pressure)
• o3_background
• Altitude above mean sea level(alt)
• time_offset
• averaging_time
• diagnostic_voltage_mb_15
• lamp_level
• pressure_compensation_state
• diagnostic_voltage_mib_24
• Ozone concentration at STP(o3)
• diagnostic_voltage_mb_minus_3p3
• diagnostic_voltage_mb_5
• ozone_bench_temp
• base_time
• o3_lamp_temperature
• diagnostic_voltage_mib_5
• lamp_temperature
• diagnostic_voltage_mib_3p3
• temperature_compensation_state
• time
• Daily values of ozone on each grid cell(ozone)
• calibration_level_5
• lamp_voltage_ozonizer
• calibration_level_4
• o3_bench_temperature
• range
• intensity_b
• intensity_a
• diagnostic_voltage_mb_24
• o3_coefficient
• diagnostic_voltage_mib_minus_15
• North latitude(lat)
• diagnostic_voltage_mb_3p3
• diagnostic_voltage_mib_15
• o3_flags
• East longitude(lon)
• noise_b
• noise_a
• lamp_voltage_bench
• o3_lamp_state