Please be informed that if you are submitting data to the ACTRIS network, you should only report NOx level 0 together with all associated parameters. Level 1 and level 2 data are processed at the ACTRIS central facility for NOx gases.

Data Level Description Used For
  • Annotated raw data
  • Format instrument specific
  • Contains all parameters provided by instrument as provided
  • Contains all parameters / info needed for processing to final value.
  • "Native" time resolution
  • Advanced data reporting
  • Near-Real-Time (NRT) data reporting
  • Data processed to final parameter
  • Invalid data & calibration episodes removed
  • "Native" time resolution
  • Format property specific
  • Correction to standard temperature & pressure cond. (273.15 K, 1013.25 hPa) if necessary
  • Advanced data reporting
  • Intercomparisons
  • Data aggregated to hourly averages
  • Atmospheric variability quantified by standard deviation or percentiles
  • Format property specific
auto-processed Near-Real-Time (NRT) data processing
2 manual quality assurance Regular, annual data reporting

This service has been funded or supported by the Norwegian Institute for Air Research (NILU), the EU research infrastructure ACTRIS (Aerosols, Clouds, and Trace gases Research InfraStructure), the European Monitoring and Evaluation Programme (EMEP).