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Data Submission Manual
Submit DataData ReportingTemplatesCategoryPersistent Organic PollutantsPOPs in precipitation    September 30, 2020

Template for POPs in precipitation

This format should be used for submitting all relevant persistent organic pollutants (POPs) measured in precipitation

Points to note:

  • Report precipitation amount from the wet only (or bulk) sampler and the co-located official meteorological rain gauge when available.
  • For days without rain, set value to 0.00/flag to 000 for precipitation amount, and value to missing/flag to 890 for the compound.
  • This template can be used for total deposition measurements also, then use matrix precp+dry_dep. NOTE. If however concentration has been measured, this should be reported together with precipitation
  • Include information on both the sampling and analytical instruments.
  • Include information on how sample is treated in the lab under “sample preparation “. Use special setup with information on combination of Soxhlet+Hexane+13C+Silica
  • Include information if been part of any relevant laboratory intercomparison in the QA measures

Downloading template as text file

You could download the template and start to modify the text with your own metadata. Due to limitations of the online portal we could not provide files with the .nas file extension. So please download the text file and edit, and remember to use the .nas file-extension when you create your datafile: pops_precip.txt

Validation and submission:

To validate the file, please use the EBAS Submission Tool

Flags commonly used with this format:

All the flags defined for EBAS can be used, and the data submitter is encourage to go through the list of all EBAS flags prior to submitting to ensure that appropriate flagging is done.
Flags are grouped in four categories: V (valid measurement), I (invalid measurement), M (missing measurement) or H (hidden and invalid measurements)..
Apply '000' for valid measurements without any annotations.
The most common flags for these measurements are:

Group 9: Missing flags

999MMissing measurement, unspecified reason

Group 8: Flags for undefined data elements

890MConcentration in precipitation undefined, no precipitation

Group 7: Flags used when the value is unknown

783MLow precipitation, concentration unknown
782VLow precipitation, concentration estimated
781VValue below detection limit, data element contains detection limit

Group 6: Mechanical or instrumental problem

657VPrecipitation collector overflow. Heavy snowfall/rain shower (squall)
656VWet-only collector failure, operated as bulk collector

Group 5: Chemical problem

599IUnspecified contamination or local influence
591IAgricultural contamination, considered invalid
568IDust contamination, considered invalid
559VUnspecified contamination or local influence, but considered valid
558VDust contamination, but considered valid
549IImpure chemicals
540ISpectral interference in laboratory analysis
532VData less accurate than normal due to high field blank value
531VLow recovery, analysis inaccurate
530IInvalid due to too low or too high recovery

Group 4: Extreme or inconsistent values

460IContamination suspected

Group 1: Exception flags for accepted, irregular data

147VBelow theoretical detection limit or formal Q/A limit, but a value has been measured and reported and is considered valid

Template for Data Submission:

Clicking on a specific line in the example template will provide a detailed explanation and possible options for each of the metadata elements.

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!

79 1001
Enge, Ellen Katrin; Nizzetto, Pernilla Bohlin
NO01L, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway
Våler, Rita
1 1
2013 01 01 2014 01 21
days from file reference point
1 1 1 1 1 1 1 1 1 1 1
999.99 9999.9 9.999999 9.9999 9.999999 9.9999 9.999 9.99999 9.999 9.9999 9.999
end_time of measurement, days from the file reference point
precipitation_amount, mm, Detection limit=0.01 mm, Analytical measurement technique=by_weight, Analytical instrument name=by_weight, Analytical instrument manufacturer=, Analytical instrument model=, Analytical instrument serial number=
numflag precipitation_amount, no unit, Detection limit=0.01 mm, Analytical measurement technique=by_weight, Analytical instrument name=by_weight, Analytical instrument manufacturer=, Analytical instrument model=, Analytical instrument serial number=
HCB, ng/l
numflag HCB, no unit
PCB_101, ng/l
numflag PCB_101, no unit
PCB_180, ng/l
numflag PCB_180, no unit
gamma_HCH, ng/l
numflag gamma_HCH, no unit

Data definition: EBAS_1.1
Set type code: TU
Timezone: UTC
File name: NO0001R.20130104060000.20140121142400.bulk_sampler.pops.precip.1y.1w.NO01L_NILU_bspop_01a.NO01L_NILU_O_2.lev2.nas
Startdate: 20130104060000
Revision date: 20140121142400
Version: 1
Version description: initial revision, manually inspected
Data level: 2
Period code: 1y
Resolution code: 1w
Sample duration: 1w
Station code: NO0001R
Platform code: NO0001S
Station name: Birkenes
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 height: 2.0 m

Component: pops
Unit: ng/l
Matrix: precip
Laboratory code: NO01L
Instrument type: bulk_sampler
Instrument name: NILU_bspop_01a
Instrument manufacturer: IVL
Instrument model: pop
Analytical laboratory code: NO01L
Analytical measurement technique: GC-HRMS
Analytical instrument name: NILU_GCMS
Analytical instrument manufacturer: Agilent
Analytical instrument model: 12345
Method ref: NO01L_NILU_O_2
Standard method: SOP=EMEP_manual_v2014
Sample preparation: liquid_extraction+cyclo-hexane+13C+Silica
Blank correction: Not blank corrected
Detection limit:
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 147
QA1 measure ID: AMAP/EMEP/NCP_2010
QA1 date: 20100701
QA1 document URL: ""

Originator: Enge, Ellen Katrin,, Norwegian Institute for Air Research, NILU, Environmental Chemistry Department, Instituttveien 18, , 2007, Kjeller, Norway
Originator: Nizzetto, Pernilla Bohlin,, Norwegian Institute for Air Research, NILU, Environmental Chemistry Department, Instituttveien 18, , 2007, Kjeller, Norway

Submitter: Våler, Rita,, Norwegian Institute for Air Research, NILU, Monitoring and Instrumentation Technology Department, Instituttveien 18, , 2007, Kjeller, Norway
starttime endtime mm flag_mm HCB flag_HCB PCB-101 flag_PCB-101 PCB-180 flag_PCB-180 gamma-HCH flag_gamma-HCH
3.25 10.25 47.3 0.000000 0.0901 0.000000 0.0051 0.000 0.00444 0.000 0.1670 0.000
10.25 17.25 43.3 0.000000 0.0526 0.780000 0.0066 0.000 0.00258 0.000 0.0319 0.000

Version Information:

Last Change: 2019-07-24 12:25:47 UTC

  • linked list of valid parameters to component description

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