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| 
Neumayer
-O3-
| Observation |
| Category |
: |
Air sampling observation |
| Situation |
: |
ongoing |
| Time zone |
: |
UTC |
| Sampling |
| Sampling height |
: |
8 |
| Description |
: |
continuous |
| Sampling and analysis frequency |
: |
Continuous; one minute averages are validated and archived. |
| Sampling environment |
: |
The dominant source of surface ozone for Antarctica is mainly transport of upper troposheric or stratospheric air. Local photochemistry acts as a sink due to very low NOx mixing ratios (around 2-5 pptv). |
| Description for sampling analysis |
: |
Ambient air is continuously sampled through a teflon tube by a vacuum pump (flow rate 1.6 L/min) |
| Instrument and Analysis |
| Measurement method |
: |
Light absorption analysis (UV) |
| Current status and history of instrument |
: |
EEC (1982-1994) , UV Photometer(1995-) Environment s.a. type O3-41M |
| Description of instrument |
: |
Environment s.a.
Environment s.a. ozone analyzer type O3-41M |
| Calibration |
| Current scale employed in the measurement |
: |
Observer's standard scale |
| Measurement calibration |
: |
internal O3 calibration source, comparison with second O3 analyzer and ECC-sondes |
| Scale and calibration(treasability) |
: |
|
| Data Processing |
| Measurement unit |
: |
ppb |
| Data processing |
: |
the original data resolution is 1 minute since the year 2000 and 3 minutes before 2000. Data taken during zeroing periods, calibration or instrument malfunction were removed. |
| Processing for averaging |
: |
Processing for Hourly Data:
1 hour means were calculated from the validated one-minute averages.
|
| Data flag |
: |
-9999.99 |
| Data remarks |
: |
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| Other Information |
| Scientific aim |
: |
Scientific aim of observation is to investigate tropospheric ozone minima and to provide long-term surface ozone data in the pristine troposphere |
| Reference |
: |
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|
| submitted by Alfred Wegener Institute and Deutscher Wetterdienst |
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