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| 
Virolahti
-NO2-
| Observation |
| Category |
: |
Air sampling observation |
| Situation |
: |
ongoing |
| Time zone |
: |
UTC |
| Sampling |
| Sampling height |
: |
|
| Description |
: |
continuous |
| Sampling and analysis frequency |
: |
Continuous |
| Sampling environment |
: |
|
| Description for sampling analysis |
: |
untill 1993 ; salzman method Thermo Environmental Instruments Inc. 42S |
| Instrument and Analysis |
| Measurement method |
: |
|
| Current status and history of instrument |
: |
Salzman 1990-Jan.1995 Chemiluminescence Feb.1995-2000 |
| Description of instrument |
: |
|
| Calibration |
| Current scale employed in the measurement |
: |
0-200 ug(NO2)/m3 |
| Measurement calibration |
: |
Sampling equipment calibration four times a year. Permeation method. Environnement VE3M. |
| Scale and calibration(treasability) |
: |
0-200 ?g(NO2)/m3 |
| Data Processing |
| Measurement unit |
: |
ugN/m3-20C |
| Data processing |
: |
Daily and monthly averages represents period which begins at 06:00 UTC. |
| Processing for averaging |
: |
Processing for Daily Data:
Daily averages are calculated from accepted hourly averages. If there are under 18 hourly values for a daily average, the daily average is missing.
Processing for Monthly Data:
Monthly averages are calculated from accepted daily averages. If the coverage of accepted daily averages is under 50 % in a month, the monthly average is missing. |
| Data flag |
: |
EMEP Flags are used (http://www.nilu.no/projects/ccc/submission.html) |
| Data remarks |
: |
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| Other Information |
| Scientific aim |
: |
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| Reference |
: |
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| submitted by Finnish Meteorological Institute |
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