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 precipitation

This format should be used for submitting all relevant heavy metal measured in precipitation, including precipitation amount. 

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.

  • Report precipitation amount from the wet only (or bulk) sampler and the co-located official meteorological rain gauge when available.
  • Include information on both the sampling and analytical instruments.
  • Include information on performance in laboratory inter-comparison in the QA measures.
  • For days without rain, set value to 0.00/flag to 000 for precipitation amount, and value to missing/flag to 890 for the trace elements.
  • 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:
lev2.nas

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
440 V Reconstructed or recalculated data
459 I Extreme value, unspecified error
460 I Contamination suspected
Group 5: Chemical problem
Flag Validity Description
555 V Pollen and/or leaf contamination, but considered valid
556 V Bird droppings, but considered valid
557 V Insect contamination, but considered valid
558 V Dust contamination, but considered valid
559 V Unspecified contamination or local influence, but considered valid
565 I Pollen and/or leaf contamination, considered invalid
566 I Bird droppings, considered invalid
567 I Insect contamination, considered invalid
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
656 V Wet-only collector failure, operated as bulk collector
657 V Precipitation collector overflow. Heavy snowfall/rain shower (squall)
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
782 V Low precipitation, concentration estimated
783 M Low precipitation, concentration unknown
Group 8: Flags for undefined data elements
Flag Validity Description
890 M Concentration in precipitation undefined, no precipitation
Group 9: Missing flags
Flag Validity Description
999 M Missing measurement, unspecified reason
96 1001
Aas, Wenche; Someone, Else
NO01L, Norwegian Institute for Air Research, NILU, , Instituttveien 18, , 2007, Kjeller, Norway
Hjellbrekke, Anne
CAMP EMEP
1 1
2018 01 01 2020 10 15
0
days from file reference point
23
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
99.999999 999.99 9.999 9.999 9.999 9.999 9.999 9.999 9.999 9.999 9.999 99.999 9.999 99.999 9.999 99.999 9.999 9.999 9.999 9.999 9.999 999.999 9.999
end_time of measurement, days from the file reference point
precipitation_amount, mm, Analytical measurement technique=by_weight, Analytical instrument name=by_weight, Analytical instrument manufacturer=, Analytical instrument model=, Analytical instrument serial number=, Detection limit=0.01 mm, QA1 measure ID=, QA1 date=, QA1 outcome=
numflag precipitation_amount, no unit
arsenic, ug/l, Detection limit=0.3 ug/l, QA1 bias=-8.0 %, QA1 variability=5.0 %
numflag arsenic, no unit
cadmium, ug/l, Detection limit=0.03 ug/l, QA1 bias=6.0 %, QA1 variability=3.0 %
numflag cadmium, no unit
chromium, ug/l, Detection limit=0.3 ug/l, QA1 bias=-9.0 %, QA1 variability=10.0 %
numflag chromium, no unit
cobalt, ug/l, Detection limit=0.01 ug/l, QA1 measure ID=, QA1 date=, QA1 outcome=
numflag cobalt, no unit
copper, ug/l, Detection limit=0.01 ug/l, QA1 bias=2.0 %, QA1 variability=9.0 %
numflag copper, no unit
lead, ug/l, Detection limit=0.2 ug/l, QA1 bias=5.0 %, QA1 variability=5.0 %
numflag lead, no unit
manganese, ug/l, Detection limit=0.1 ug/l, QA1 measure ID=, QA1 date=, QA1 outcome=
numflag manganese, no unit
nickel, ug/l, Detection limit=0.07 ug/l, QA1 bias=-45.0 %, QA1 variability=15.0 %
numflag nickel, no unit
vanadium, ug/l, Detection limit=0.02 ug/l, QA1 measure ID=, QA1 date=, QA1 outcome=
numflag vanadium, no unit
zinc, ug/l, Detection limit=0.4 ug/l, QA1 bias=19.0 %, QA1 variability=20.0 %
numflag zinc, no unit
0
59
Data definition: EBAS_1.1
Set type code: TI
Timezone: UTC
File name: NO0001R.20180101070000.20201015093000.bulk_sampler.heavymetals.precip.1y.1w.NO01L_NILU_SF1_d_0001.NO01L_NILU_ICP-MS_01.lev2.nas
Startdate: 20180101070000
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: 1w
Orig. time res.: 1w
Station code: NO0001R
Platform code: NO0001S
Station name: Birkenes
Station WDCA-ID: GAWANO__BIR
Station GAW-ID: BIR
Station GAW-Name: Birkenes Atmospheric Observatory
Station other IDs: 201(NILUDB)
Station land use: Forest
Station setting: Rural
Station GAW type: R
Station WMO region: 6
Station latitude: 58.383333
Station longitude: 8.25
Station altitude: 190.0 m
Measurement altitude: 200.0 m
Measurement height: 2.0 m
Regime: IMG
Component: heavymetals
Unit: ug/l
Matrix: precip
Laboratory code: NO01L
Instrument type: bulk_sampler
Instrument name: NILU_SF1_d_0001
Instrument manufacturer: NILU
Instrument model: SF1
Instrument serial number: 12345
Analytical laboratory code: NO01L
Analytical measurement technique: ICP-MS
Analytical instrument name: NILU_ICP-MS_01
Analytical instrument manufacturer: Thermo
Analytical instrument model: ELEMENT2
Analytical instrument serial number: 12345
Standard method: SOP=EMEP_manual_v1996
Blank correction: Not blank corrected
Detection limit expl.: Lower quantification limit, determined by taking 10 times standard deviation of ensemble of laboratory 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, waa@nilu.no, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway
Originator: Someone, Else, Someone@somewhere.no, Some nice Institute, WOW, Super interesting division, Street 18, , X-9999, Paradise, Noway
Submitter: Hjellbrekke, Anne, agh@nilu.no, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway
Acknowledgement: Request acknowledgement details from data originator
Comment:
starttime endtime mm flag_mm 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
0.291667 1.291667 9.20 0.000 0.090 0.781 0.011 0.780 0.092 0.780 0.041 0.000 1.031 0.000 0.477 0.000 1.267 0.000 0.539 0.000 0.262 0.000 5.339 0.000
1.291667 8.291667 30.10 0.000 0.090 0.781 0.003 0.780 0.090 0.781 0.004 0.781 0.100 0.781 0.106 0.780 0.370 0.780 0.069 0.780 0.056 0.000 1.512 0.000
8.291667 15.291667 9.55 0.000 0.090 0.781 0.003 0.780 0.110 0.780 0.012 0.000 0.290 0.780 0.155 0.780 0.639 0.000 0.140 0.000 0.096 0.000 1.542 0.000
15.291667 22.291667 23.50 0.000 0.090 0.781 0.004 0.780 0.090 0.781 0.007 0.780 0.221 0.780 0.124 0.780 0.225 0.780 0.126 0.000 0.067 0.000 1.596 0.000
22.291667 29.291667 41.82 0.000 0.295 0.780 0.063 0.000 0.129 0.780 0.018 0.000 1.067 0.000 2.241 0.000 1.505 0.000 0.419 0.000 0.393 0.000 10.741 0.000
29.291667 31.291667 0.00 0.000 9.999 0.890 9.999 0.890 9.999 0.890 9.999 0.890 99.999 0.890 99.999 0.890 99.999 0.890 9.999 0.890 9.999 0.890 999.999 0.890

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).