The example template given below contains the metadata fields that are commonly included when reporting
data related to this specific template. Some of these metadata elements may not be relevant for your data reporting, like AIRS station
ID for stations outside North America or the various QA measure data when there is no QA measure for the data. Such metadata elements could
be let out. If you want to include additional metadata elements that are not given in the example template, there is a complete list
here. In case of any doubt about such additional metadata, please consult the EBAS team!
Aerosol Particle Mass Concentration Data Obtained with Certified Equivalent Online Method (level 2)
Below, you find an example of a data file reporting measurements of aerosol particulate mass
concentration measured by online methods certified as equivalent to the gravimetric reference method. This comprises currently
the proxy methods of "Tapered Element Oscillating Microbalanace" (TEOM), attenuation of beta radiation, and optical measurement
of the particle size distribution. The format has been designed to make data reporting as easy as possible while still keeping
the file self-explanatory and containing the essential information necessary for archiving and interpreting the file content.
The parameters to be included in a regular data submission have been determined by an instrument specific GAW expert group.
Points to note:
- Most of the information entering the header needs to be collected only for the first submission.
For the first submission, it is easiest to copy the example, and to adapt it to your station. However, when "recycling" the
header for a new submission, please do make sure that the information is current, and update where necessary.
- When calculating average values, e.g. hourly, from measurements with higher time resolution,
please disregard any invalid measurements. Any informative flags, e.g. local contamination, occuring at any time during the
average period need to be copied to the average value.
- Boundary and Spike Checks: Submitted data will be checked
for boundaries, the current specification for boundary checks can be found
Downloading template as nasaames file
Please download the .nas file and edit, and remember to keep the .nas file-extension when you
create your datafile:
Validation and submission:
To validate the file, please use the EBAS Submission Tool
Flags commonly used with this format:
The three main types of flags in EBAS are:
- V (valid measurement): indicate a special condition at the station, but instrument has operated correctly, the data are therefore considered valid.
- I (invalid measurement): showing that data are not available (not measured, deleted or if it is no precipitation)
- M (missing measurement): mainly used for level 0 data to be able to exclude these data when being reprocessed to level 1 and level 2
For data harmonization across the network, the following short list of the flags should be used with this template. It is possible to use several flags at the same time to give detailed information about the data.
|Group 0: Valid data|
||valid data, no flag
|Group 9: Missing flags
||Missing measurement, unspecified reason
|84 1001Fiebig, Markus; Someone, ElseNO01L, Norwegian Institute for Air Research, NILU,, Instituttveien 18,, N-2027, Kjeller, NorwayFiebig, MarkusGAW-WDCA1 12008 01 01 2008 06 240.041667days from file reference point71 1 1 1 1 1 19999.999999 9999.99 9999.99 999999.999999 999999.999999 999999.999999 9.999999999999999999999999999999999999999999999end_time of measurement, days from the file reference point
pressure, hPa, Location=instrument internal, Matrix=instrument
temperature, K, Location=instrument internal, Matrix=instrument
pm10_mass, ug/m3, Measurement uncertainty=30%
pm10_mass, ug/m3, Statistics=percentile:15.87, Measurement uncertainty=30%
pm10_mass, ug/m3, Statistics=percentile:84.13, Measurement uncertainty=30%
063Data definition: EBAS_1.1Set type code: TUStation code: NO0001RPlatform code: NO0001STimezone: UTCFile creation: 20090101080000Startdate: 20080101000000Revision date: 20080624000000Statistics: arithmetic meanComponent: pm10_massUnit: ug/m3Matrix: pm10Period code: 1yResolution code: 1hSample duration: 1hLaboratory code: NO01LInstrument type: optical_particle_counterInstrument manufacturer: GrimmInstrument model: 190Instrument name: Grimm_190_BIR_dryInstrument serial number: 70810508Method ref: NO01L_pm10_Grimm190Orig. time res.: 5sFile name: NO0042R.20080101000000.20080624000000.pm10_mass.pm10.1y.1h.nasStation WDCA-ID: GAWANO__BIRStation GAW-Name: Birkenes Atmospheric ObservatoryStation GAW-ID: BIRStation AIRS-ID: [this line is optional]Station other IDs: 201(NILUDB)Station state/province: [this line is optional]Measurement latitude: 58.380Measurement longitude: 8.250Measurement altitude: 220 mStation land use: ForestStation setting: RuralStation latitude: 58.38853Station longitude: 8.252Station altitude: 219.0 mStation name: Birkenes IIStation GAW type: RStation WMO region: 6Originator: Fiebig, Markus, Markus.Fiebig@nilu.no, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , N-2027, Kjeller,NorwayOriginator: Someone, Else, Someone@somewhere.no, Somenice Institute, WOW, Super interesting division, Street18,, X-9999, Paradise,NowaySubmitter: Fiebig, Markus, Markus.Fiebig@nilu.no, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, ,N-2027, Kjeller, NorwayData level: 2Version: 1Version description: initial revisionMeasurement height: 4mInlet type: Hat or hoodInlet description: inlet as delivered with instrument, incl. dryer and hatHumidity/temperature control: Nafion dryerHumidity/temperature control description:Sample heated to lab temperature and dried to RH < 40%.Volume std. temperature: 273.15KVolume std. pressure: 1013.25hPaDetection limit: 0 ug/m3Detection limit expl.: Determined only by instrument counting statistics, no detection limit flag usedMeasurement uncertainty expl.: typical deviation to impactor and filter reference methods as determined by Burkartetal.,2010.Zero/negative values code: Zero possibleZero/negative values: Zero values may appear due to statistical variations at very low concentrationsStandard method: NoneComment: Instrument installed and operated according to manual, drier switch-on threshold set to 40% RHAcknowledgement: Request acknowledgement details from data originatorstart_time end_time p_int T_int pm10 pm10pc15.83 pm10pc84.17 numflag
0.000000 0.041667 839.40 299.80 7.352200 6.616600 8.087700 0.000000000000000000000000000000000000000000000
0.041667 0.083333 9999.99 9999.99 999999.999999 999999.999999 999999.999999 0.999000000000000000000000000000000000000000000