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 Aerosol Mass Spectrometer measurements

This template should be used for both Aerosol Mass spectrometers (AMS) and Aerosol Chemical Mass Spectroemters (ACSM), including instruments such as Q-AMS, C-ToF-AMS, HR-ToF-AMS, Q-ACSM and ToF-ACSM. 

Points to note:

  • To generate Nasa Ames, files it is strongly recommended to use the EBAS Export Tool (an Igor procedure) written by Jay Slowik (Paul Scherrer Institute, Switzerland). The toolkit provides data at Level 0 (measurement time resolution) or Level 2 (re-averaged to hourly data, missing points filled in). The tool requires fully processed ACSM/AMS data. 
  • External link to download the EETA v2.6 tool: https://psilists.ethz.ch/sympa/arc/actris-acsm/2015-10/msg00001/EETA_v2_6.ipf
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 9: Missing flags
Flag Validity Description
999 M Missing measurement, unspecified reason
98 1001
Aas, Wenche; Someone, Else
NO01L, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway
Eckhardt, Paul
ACTRIS_preliminary
1 1
2019 01 01 2020 11 09
0.041667
days from file reference point
25
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
9999.999999 9999.999 9999.999 9.999 9999.999 9999.999 9.999 9999.999 9999.999 9.999 9999.999 9999.999 9.999 9999.999 9999.999 9.999 9999.999 9999.999 9.999 9999.999 9999.999 9.999 9999.999 9999.999 9.999
end_time of measurement, days from the file reference point
ammonium, ug N/m3, Statistics=arithmetic mean, Detection limit=0.2 ug N/m3, Measurement uncertainty=0.2 ug N/m3
ammonium, ug N/m3, Statistics=uncertainty, Measurement uncertainty=
numflag, no unit
chloride, ug/m3, Statistics=arithmetic mean, Detection limit=0.01 ug/m3
chloride, ug/m3, Statistics=uncertainty, Measurement uncertainty=
numflag, no unit
nitrate, ug N/m3, Statistics=arithmetic mean, Detection limit=0.005 ug N/m3, Measurement uncertainty=0.2 ug N/m3
nitrate, ug N/m3, Statistics=uncertainty, Measurement uncertainty=
numflag, no unit
organic_mass, ug/m3, Statistics=arithmetic mean, Detection limit=0.1 ug/m3
organic_mass, ug/m3, Statistics=uncertainty, Measurement uncertainty=
numflag, no unit
organic_mass, ug/m3, Fraction=Org_43, Statistics=arithmetic mean
organic_mass, ug/m3, Fraction=Org_43, Statistics=uncertainty, Measurement uncertainty=
numflag, no unit
organic_mass, ug/m3, Fraction=Org_44, Statistics=arithmetic mean
organic_mass, ug/m3, Fraction=Org_44, Statistics=uncertainty, Measurement uncertainty=
numflag, no unit
organic_mass, ug/m3, Fraction=Org_60, Statistics=arithmetic mean
organic_mass, ug/m3, Fraction=Org_60, Statistics=uncertainty, Measurement uncertainty=
numflag, no unit
sulphate_total, ug S/m3, Statistics=arithmetic mean, Detection limit=0.01 ug S/m3, Measurement uncertainty=0.2 ug S/m3
sulphate_total, ug S/m3, Statistics=uncertainty, Measurement uncertainty=
numflag, no unit
0
59
Data definition: EBAS_1.1
Set type code: TU
Timezone: UTC
File name: NO0002R.20190101000000.20201109000000.aerosol_mass_spectrometer.chemistry_ACSM.pm1_non_refractory.2h.1h.NO01L_Aerodyne_ACSM_140-103_BIR.NO01L_Ng_2011.lev2.nas
Startdate: 20190101000000
Revision date: 20201109000000
Version: 1
Version description: initial revision, manually inspected
Data level: 2
Period code: 2h
Resolution code: 1h
Sample duration: 1h
Orig. time res.: 15mn
Station code: NO0002R
Platform code: NO0002S
Station name: Birkenes II
Station WDCA-ID: GAWANO__BIR
Station GAW-ID: BIR
Station GAW-Name: Birkenes Atmospheric Observatory
Station AIRS-ID:
Station other IDs: BIR (ICOS), Birkenes (AERONET)
Station land use: Forest
Station setting: Rural
Station GAW type: R
Station WMO region: 6
Station latitude: 58.38853
Station longitude: 8.252
Station altitude: 219.0 m
Measurement height: 4.0 m
Regime: IMG
Component: chemistry_ACSM
Unit: ug/m3
Matrix: pm1_non_refractory
Laboratory code: NO01L
Instrument type: aerosol_mass_spectrometer
Instrument name: Aerodyne_ACSM_140-103_BIR
Instrument manufacturer: Aerodyne
Instrument model: Q-ACSM
Instrument serial number: 140-103
Method ref: NO01L_Ng_2011
Standard method: Ref=Ng_2011
Inlet type: Hat or hood
Inlet description: Downward facing with hood
Volume std. temperature: 273.15 K
Volume std. pressure: 1013.25 hPa
Detection limit expl.: Determined by instrument counting statistics, no detection limit flag used
Measurement uncertainty: 0.2 ug/m3
Measurement uncertainty expl.: Uncertainties calculated using based on the method of Allan et al. (2003), DOI 10.1029/2002JD002358.
Zero/negative values code: Zero/negative possible
Zero/negative values: Zero and neg. values may appear due to statistical variations at very low concentration
QA1 measure ID: WCCAP-ACSM-2018-1
QA1 date: 20181123
QA1 document URL: "https://www.actris-ecac.eu/files/ECAC-report-ACSM-2018-1-2.pdf"
Originator: Aas, Wenche, waa@nilu.no, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway, ORCID=0000-0002-2908-1970
Originator: Someone, Else, Someone@somewhere.no, Some nice Institute, WOW, Super interesting division, Street 18, , X-9999, Paradise, Noway
Submitter: Eckhardt, Paul, pe@nilu.no, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway, ORCID=0000-0003-1685-9306
Acknowledgement: EETA (EBAS Export Tool for AMS/ACSM) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS.
Comment:
starttime endtime NH4 err_NH4 flag_NH4 Chl err_Chl flag_Chl NO3 err_NO3 flag_NO3 Org err_Org flag_Org Org_43 err_Org_43 flag_Org_43 Org_44 err_Org_44 flag_Org_44 Org_60 err_Org_60 flag_Org_60 SO4 err_SO4 flag_SO4
0.000000 0.041667 0.488 0.002 0.000 1.880 0.232 0.000 0.967 0.001 0.000 0.094 0.001 0.000 0.894 0.010 0.000 1.912 0.321 0.000 0.465 0.211 0.000 1.092 0.002 0.000
0.041667 0.083333 9999.999 9999.999 0.999 9999.999 9999.999 0.999 9999.999 9999.999 0.999 9999.999 9999.999 0.999 9999.999 9999.999 0.999 9999.999 9999.999 0.999 9999.999 9999.999 0.999 9999.999 9999.999 0.999

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).