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Dobele
-O3-
| Observation |
| Category |
: |
Air sampling observation |
| Situation |
: |
ongoing |
| Time zone |
: |
Local time +2 |
| Sampling |
| Sampling height |
: |
2.5 |
| Description |
: |
continuous |
| Sampling and analysis frequency |
: |
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| Sampling environment |
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| Description for sampling analysis |
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| Instrument and Analysis |
| Measurement method |
: |
Ultraviolet absorption method |
| Current status and history of instrument |
: |
Standard Instrument O341M, Environnement s.a., France 364. Period of used : 02.1994.-03.2008 - regional GAW/EMEP station Rucava; since 10.2008. - Dobele station
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| Description of instrument |
: |
O341M, Environnement s.a., France
364 Ultraviolet absorption method (automatic analyzer )
Ranges: 0.1/0.25/1ppm
Lower detectable limit: 1ppb
Zero drift: less then 1ppb/7days
Span drift: less then 1%/7day
Linearity: 1%
Response time: programmable: 10-90sec., standard: 50sec.(10sec.cycle)
Output signal: 0-1, 0-10V, 0-20mA or 4-20mA |
| Calibration |
| Current scale employed in the measurement |
: |
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| Measurement calibration |
: |
internal ozone generator: every 24 hours, test parameter checking: every 360 hours, calibration with analyzer type-USA NIST SRP No.17 , Czech Hydrometeorological Institute: 1 times per year |
| Scale and calibration(treasability) |
: |
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| Data Processing |
| Measurement unit |
: |
ug/m3 at 25 C |
| Data processing |
: |
ISMERIT datalogging program for PC ( written by DATARAL Data and Electronic, Sweden), integration time 60sec. |
| Processing for averaging |
: |
Processing for Hourly Data:
Adopt hourly arithmetic value
Processing for Daily Data:
Derive the arithmetic mean of hourly data
Processing for Monthly Data:
Derive the arifmetic mean of hourly data
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| Data flag |
: |
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| Data remarks |
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| Other Information |
| Scientific aim |
: |
Global Atmosphere Watch (on regional level |
| Reference |
: |
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| submitted by Environment Geology and Meteorology Centre |
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