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 by Gravimetric Filter Analysis (level 2 data)
Below, you find an example of a data file reporting measurements of aerosol particulate mass concentration measured by
gravimetric filter analysis. The format has been designed to make data reporting a 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:
Clicking on a specific line in the example template will provide a detailed explanation and possible options
for each of the metadata elements. Please contact ebas@nilu in case of broken links etc.
- 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.
A complete list of EBAS metadata elements and there relevance
- 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
|53 1001Aas, WencheNO01L, Norwegian Institute for Air Research, NILU, , Instituttveien 18, , 2007, Kjeller, NorwayHjellbrekke, AnneCAMP EMEP NILU1 12010 01 01 2017 10 107.000000days from file reference point31 1 199.999999 99.999 9.999end_time of measurement, days from the file reference point
numflag pm10_mass, no unit
036Data definition: EBAS_1.1Set type code: TUTimezone: UTCFile name: NO0001R.20091230070000.20171010195500.low_vol_sampler.pm10_mass.pm10.5w.1w.NO01L_kfg_no01.NO01L_Thermo_Optical-Sunset_Lab.lev2.nasFile creation: 20201211144520075825Startdate: 20091230070000Revision date: 20171010195500Statistics: arithmetic meanData level: 2Period code: 5wResolution code: 1wStation code: NO0001RPlatform code: NO0001SStation name: BirkenesStation WDCA-ID: GAWANO__BIRStation GAW-ID: BIRStation GAW-Name: Birkenes Atmospheric ObservatoryStation other IDs: 201(NILUDB)Station land use: ForestStation setting: RuralStation GAW type: RStation WMO region: 6Station latitude: 58.383333Station longitude: 8.25Station altitude: 190.0 mRegime: IMGComponent: pm10_massUnit: ug/m3Matrix: pm10Laboratory code: NO01LInstrument type: low_vol_samplerInstrument name: kfg_no01Method ref: NO01L_Thermo_Optical-Sunset_LabOriginator: Aas, Wenche, email@example.com, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway, ORCID=0000-0002-2908-1970Submitter: Hjellbrekke, Anne, firstname.lastname@example.org, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, NorwayComment:starttime endtime PM10 flag_PM10-1.708333 5.291667 2.916 0.000
5.291667 12.291667 1.277 0.000
12.291667 19.291667 6.111 0.000
19.291667 26.291667 6.728 0.000
26.291667 33.291667 9.023 0.000