|
| 
Baring Head
-O3-
| Observation |
| Category |
: |
Air sampling observation |
| Situation |
: |
ongoing |
| Time zone |
: |
Local time +12 |
| Sampling |
| Sampling height |
: |
10 |
| Description |
: |
continuous |
| Sampling and analysis frequency |
: |
Hourly |
| Sampling environment |
: |
|
| Description for sampling analysis |
: |
Continuous sampling. Air for these measurements is drawn from 5 metres above the ground through a dedicated teflon tube with a 0.5 um teflon filter on the inlet to exclude aerosols.
|
| Instrument and Analysis |
| Measurement method |
: |
UV Photometric |
| Current status and history of instrument |
: |
UV Photometric ozone analyser |
| Description of instrument |
: |
For 1991-2004: Dasibi model 1003-PC, Serial number 3584
For 2005 onwards: Thermo Electron Corporation TEI-49i ozone analyser. |
| Calibration |
| Current scale employed in the measurement |
: |
|
| Measurement calibration |
: |
Multipoint calibration versus Transfer Standard traceable to US EPA NIST Standard Reference Photometer in October 2003. |
| Scale and calibration(treasability) |
: |
|
| Data Processing |
| Measurement unit |
: |
ppb |
| Data processing |
: |
|
| Processing for averaging |
: |
Processing for Hourly Data:
For 1991-2004: Data are submitted to WDCGG as hourly averages (of 6 10-minute values); with an error term , which is the standard deviation of the 10-minute values.
For 2005 onwards: Data are submitted to WDCGG as hourly averages (of 12 5-minute values); with an error term , which is the standard deviation of the 5-minute values.
|
| Data flag |
: |
Data are flagged for baseline conditions (which are onshore winds, i.e. when speed > 5 m/s and wind between 150 and 210 degrees).
Sampling Conditions flag
=0: not specified
=1: not baseline
=2: baseline
|
| Data remarks |
: |
|
| Other Information |
| Scientific aim |
: |
|
| Reference |
: |
|
|
| submitted by National Institute of Water & Atmospheric Research Ltd. |
|
|
