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| 
Tanah Rata
-O3-
| Observation |
| Category |
: |
Air sampling observation |
| Situation |
: |
ongoing |
| Time zone |
: |
Local time 8 |
| Sampling |
| Sampling height |
: |
5 |
| Description |
: |
continuous |
| Sampling and analysis frequency |
: |
Continuous |
| Sampling environment |
: |
On top of a small hill in a highland tourist resort |
| Description for sampling analysis |
: |
Outdoor intake: Stainless steel tube.
Intake height: 5m above ground level.
Indoor intake: Glass manifold with 4 outlets one of which is linked to the ozone analyser by teflon tube of diameter 1.25" and length 2m.
Sample flow rate: between 1 and 3 litres per minute |
| Instrument and Analysis |
| Measurement method |
: |
Light absorption analysis (UV) |
| Current status and history of instrument |
: |
UV Photometric O3 Analyser |
| Description of instrument |
: |
Thermo Environmental Instruments
Model 49C, No. 0321 01656 |
| Calibration |
| Current scale employed in the measurement |
: |
|
| Measurement calibration |
: |
Ozone calibrator. Thermo Environmental Instruments Model 49i-PS |
| Scale and calibration(treasability) |
: |
|
| Data Processing |
| Measurement unit |
: |
ppb |
| Data processing |
: |
Hourly data is recorded and stored at the station. This data in report form is transmitted daily to the headquarters for checking and archived. There is no flagging of data at the present moment. |
| Processing for averaging |
: |
Processing for Hourly Data:
Hourly data are averages of 5 minutes data
Processing for Daily Data:
Daily data are arithmetic mean (average) of hourly data
Processing for Monthly Data:
Monthly data are arithmetic mean (average) of daily data |
| Data flag |
: |
No flagiing of data |
| Data remarks |
: |
|
| Other Information |
| Scientific aim |
: |
To document ozone trends at the site
To study effects of biomass burning in the region
To study the characteristics of tropospheric ozone in the tropics |
| Reference |
: |
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| submitted by Malaysian Meteorological Department |
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