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!

Template for heavy metals in aerosol particle-phase

This format should be used for submitting all relevant heavy metal measured in aerosols

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.

  • Include information on both the sampling and analytical instruments.
  • Include information on performance in laboratory intercomparion in the QA measures.
  • Include filter type and sample preparatidon
  • EMEP manual: online version
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
Flag Validity Description
000 V valid data, no flag
Group 1: Exception flags for accepted, irregular data
Flag Validity Description
147 V Below theoretical detection limit or formal Q/A limit, but a value has been measured and reported and is considered valid
Group 4: Extreme or inconsistent values
Flag Validity Description
410 V Sahara dust event
440 V Reconstructed or recalculated data
459 I Extreme value, unspecified error
460 I Contamination suspected
Group 5: Chemical problem
Flag Validity Description
558 V Dust contamination, but considered valid
559 V Unspecified contamination or local influence, but considered valid
568 I Dust contamination, considered invalid
591 I Agricultural contamination, considered invalid
599 I Unspecified contamination or local influence
Group 6: Mechanical or instrumental problem
Flag Validity Description
658 I Too small air volume
659 I Unspecified sampling anomaly
660 V Unspecified sampling anomaly, considered valid
662 V Too high sampling flow, data considered valid
663 I Too high sampling flow, data considered invalid
664 I Instrument flow(s) too far off target value, considered invalid
665 V Filter damaged, valid
666 I Filter damaged, invalid
668 V Moist or wet filter, valid
669 I Moist or wet filter, invalid
Group 7: Flags used when the value is unknown
Flag Validity Description
780 V Value below detection or quantification limit, data element contains estimated or measured value. Use of flag 147 is encouraged.
781 V Value below detection limit, data element contains detection limit
Group 9: Missing flags
Flag Validity Description
999 M Missing measurement, unspecified reason
102 1001
Aas, Wenche; Someone, Else
NO01L, Norwegian Institute for Air Research, NILU, , Instituttveien 18, , 2007, Kjeller, Norway
Hjellbrekke, Anne
1 1
2018 01 01 2020 10 15
days from file reference point
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
99 9.999 9.999 9.999 9.999 9.999 9.999 9.999 9.999 9.999 9.999 9.999 9.999 99.999 9.999 9.999 9.999 9.999 9.999 99.999 9.999
end_time of measurement, days from the file reference point
arsenic, ng/m3, Detection limit=0.002 ng/m3, QA1 bias=-8.0 %, QA1 variability=5.0 %
numflag arsenic, no unit
cadmium, ng/m3, Detection limit=0.0006 ng/m3, QA1 bias=6.0 %, QA1 variability=3.0 %
numflag cadmium, no unit
chromium, ng/m3, Detection limit=0.02 ng/m3, QA1 bias=-9.0 %, QA1 variability=10.0 %
numflag chromium, no unit
cobalt, ng/m3, Detection limit=0.0005 ng/m3, QA1 measure ID=, QA1 date=, QA1 outcome=
numflag cobalt, no unit
copper, ng/m3, Detection limit=0.13 ng/m3, QA1 bias=2.0 %, QA1 variability=9.0 %
numflag copper, no unit
lead, ng/m3, Detection limit=0.01 ng/m3, QA1 bias=5.0 %, QA1 variability=5.0 %
numflag lead, no unit
manganese, ng/m3, Detection limit=0.04 ng/m3, QA1 measure ID=, QA1 date=, QA1 outcome=
numflag manganese, no unit
nickel, ng/m3, Detection limit=0.04 ng/m3, QA1 bias=-45.0 %, QA1 variability=15.0 %
numflag nickel, no unit
vanadium, ng/m3, Detection limit=0.0007 ng/m3, QA1 measure ID=, QA1 date=, QA1 outcome=
numflag vanadium, no unit
zinc, ng/m3, Detection limit=0.8 ng/m3, QA1 bias=19.0 %, QA1 variability=20.0 %
numflag zinc, no unit
Data definition: EBAS_1.1
Set type code: TU
Timezone: UTC
File name: NO0042G.20180106000000.20201015093000.high_vol_sampler.heavymetals.aerosol.1y.1w.NO01L_NILU_hvs_2d_0042.NO01L_NILU_ICP_MS_02.lev2.nas
Startdate: 20180106000000
Revision date: 20201015093000
Version: 1
Version description: initial revision, manually inspected
Statistics: arithmetic mean
Data level: 2
Period code: 1y
Resolution code: 1w
Sample duration: 2d
Orig. time res.: 2d
Station code: NO0042G
Platform code: NO0042S
Station name: Zeppelin mountain (Ny-Ă…lesund)
Station GAW-ID: ZEP
Station GAW-Name: Zeppelin Mountain (Ny Ă…lesund)
Station other IDs: 1158(NILUDB)
Station land use: Gravel and stone
Station setting: Polar
Station GAW type: G
Station WMO region: 6
Station latitude: 78.90715
Station longitude: 11.88668
Station altitude: 474.0 m
Measurement altitude: 475.0 m
Measurement height: 2.0 m
Regime: IMG
Component: heavymetals
Unit: ng/m3
Matrix: aerosol
Laboratory code: NO01L
Instrument type: high_vol_sampler
Instrument name: NILU_hvs_2d_0042
Instrument manufacturer: DIGITEL
Instrument model: DHA-80
Instrument serial number: 12345
Analytical laboratory code: NO01L
Analytical measurement technique: ICP-MS
Analytical instrument name: NILU_ICP_MS_02
Analytical instrument manufacturer: Agilent
Analytical instrument model: 7900
Analytical instrument serial number: 12345
Standard method: SOP=EMEP_manual_v2014
Inlet type: Hat or hood
Inlet description: Downward facing
Flow rate: 38.0 l/min
Filter description: Whatman 41
Medium: Cellulose
Sample preparation: Acid extraction
Blank correction: Blank corrected
Humidity/temperature control: None
Humidity/temperature control description: filter kept at ambient conditions together with sampling head.
Detection limit expl.: Lower quantification limit, Determined by taking 3 times standard deviation of ensemble of field blanks
Zero/negative values code: Zero/negative possible
Zero/negative values: Zero/negative values reported as measured if within detection limit, flagged with 780
QA1 measure ID: EMEP36
QA1 date: 20181022
QA1 outcome: pass
Originator: Aas, Wenche,, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway
Originator: Someone, Else,, Some nice Institute, WOW, Super interesting division, Street 18, , X-9999, Paradise, Noway
Submitter: Hjellbrekke, Anne,, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway
Acknowledgement: Request acknowledgement details from data originator
starttime endtime As flag_As Cd flag_Cd Cr flag_Cr Co flag_Co Cu flag_Cu Pb flag_Pb Mn flag_Mn Ni flag_Ni V flag_V Zn flag_Zn
5 7 0.012 0.000 0.005 0.000 0.101 0.780 0.016 0.000 0.137 0.000 0.082 0.000 0.327 0.000 0.076 0.000 0.029 0.000 1.667 0.000
12 14 9.999 0.999 9.999 0.999 9.999 0.999 9.999 0.999 9.999 0.999 9.999 0.999 99.999 0.999 9.999 0.999 9.999 0.999 99.999 0.999
19 21 0.012 0.000 0.002 0.780 0.088 0.781 0.002 0.000 0.026 0.000 0.060 0.000 0.071 0.000 0.014 0.781 0.011 0.000 0.131 0.781
26 28 0.016 0.000 0.005 0.000 0.253 0.780 0.019 0.000 0.130 0.000 0.205 0.000 0.471 0.000 0.159 0.000 0.058 0.000 2.743 0.000
33 35 0.037 0.000 0.012 0.000 0.176 0.780 0.028 0.000 0.659 0.000 0.255 0.000 1.055 0.000 0.163 0.000 0.115 0.000 5.180 0.000

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).