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Data Submission Manual
Submit DataData ReportingTemplatesCategoryAerosolCondensation Particle Counterlevel2    April 1, 2020

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 submission of Condensation Particle Counter Data - Level 2

Below, you find an example of a data file reporting measurements of the particle size integrated aerosol particle number concentration measured by a Condensation Particle Counter (CPC). 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:

  • The pure ACSCII text format is based on the NASA-Ames standard, but contains a few additional format rules, together termed EBAS NASA-Ames format. It consists of a header and a data section. 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.

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: 


* To validate the file, please use the EBAS Submission Tool

Flags commonly used with this format:

A full list of flags could be found here.

Group 0: Valid data

Flag Validity Description
000 V Valid measurement

Group 1: Exception flags for accepted, irregular data

Flag Validity Description
110 V Episode data checked and accepted by data originator. Valid measurement

Group 5: Chemical problem

Flag Validity Description
559 V Unspecified contamination or local influence, but considered valid

Group 6: Mechanical or instrumental problem

Flag Validity Description
640 V Instrument internal relative humidity above 40%

Group 9: Missing flags

Flag Validity Description
980 M Missing due to calibration or zero/span check
999 M Missing measurement, unspecified reason

Template for Data Reporting:

88 1001
Fiebig, Markus; Someone, Else
NO01L, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18,, 2007, Kjeller, Norway
Fiebig, Markus
1 1
2008 01 01 2008 06 24
days from file reference point
1 1 1 1 1 1 1
9999.999999 9999.99 9999.99 9999999.999 9999999.999 9999999.999 9.999999999999999999999999999999999999999999999
end_time of measurement, days from the file reference point
pressure, hPa, Location=instrument internal, Matrix=instrument, Detection limit=, Detection limit expl.=, Measurement uncertainty=
temperature, K, Location=instrument internal, Matrix=instrument, Detection limit=, Detection limit expl.=, Measurement uncertainty=
particle_number_concentration, 1/cm3
particle_number_concentration, 1/cm3, Statistics=percentile:15.87
particle_number_concentration, 1/cm3, Statistics=percentile:84.13
numflag, no unit
Data definition:                          EBAS_1.1
Set type code:                            TU
Timezone:                                 UTC
File name:                                NO0001R.20080101000000.20080624000000.cpc.particle_number_concentration.pm10.1y.1h.NO01L_TSI_3010_BIR.NO01L_Adis_CPC_lev0_2_lev1_0_0_4.lev2.nas
File creation:                            20170101000000
Startdate:                                20080101000000
Revision date:                            20080624000000
Version:                                  1
Version description:                      initial revision, Adis_EUSAAR_NRT_CPC_lev0_2_lev1 v.0.0_4, Adis_EUSAAR_NRT_neph_lev1_2_lev2 v.0.0.5b
Statistics:                               arithmetic mean
Data level:                               2
Period code:                              1y
Resolution code:                          1h
Sample duration:                          1h
Orig. time res.:                          6mn
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 AIRS-ID:                         
Station other IDs:                        201(NILUDB)
Station state/province:                  
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 latitude:                     58.38
Measurement longitude:                    8.25
Measurement altitude:                     194.0 m
Measurement height:                       4.0 m
Component:                                particle_number_concentration
Unit:                                     1/cm3
Matrix:                                   pm10
Instrument type:                          cpc
Laboratory code:                          NO01L
Instrument name:                          TSI_3010_BIR
Instrument manufacturer:                  TSI
Instrument model:                         3010
Instrument serial number:                 100235
Method ref:                               NO01L_Adis_CPC_lev0_2_lev1_0_0_4
Standard method:                          None
Inlet type:                               Impactor--direct
Inlet description:                        PM10 at ambient humidity inlet, Digitel, flow 140 l/min
Humidity/temperature control:             Nafion dryer
Humidity/temperature control description: sample dried to below 40% RH with nafion dryer operated with reduced pressure sheath air
Volume std. temperature:                  273.15K
Volume std. pressure:                     1013.25hPa
Detection limit:                          0.0 1/cm3
Detection limit expl.:                    Determined only by instrument counting statistics, no detection limit flag used
Measurement uncertainty:                  5.0 %
Measurement uncertainty expl.:            typical value of unit-to-unit variability
Zero/negative values code:                Zero possible
Zero/negative values:                     Zero values may appear due to statistical variations at very low concentrations
Originator:                               Fiebig, Markus,, 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:                                Fiebig, Markus,, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18,, 2007, Kjeller, Norway
QA measure ID:                            WCCAP-CPC-2015-1
QA date:                                  20151006000000
QA document URL:                          ""
Acknowledgement:                          Request acknowledgement details from data originator
Comment:                                  Concentration corrected to calibrated flow, coincidence correction applied, counting efficiency calibration applied
start_time end_time p_int T_int conc conc_16pc conc_84pc numflag
0.000000 0.041667 839.40 299.70 6000.000 5800.000 6300.000 0.000000000000000000000000000000000000000000000
0.041667 0.083334 9999.99 9999.99 9999999.999 9999999.999 9999999.999 0.999000000000000000000000000000000000000000000
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