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ORCAS Airborne Oxygen Instrument (AO2)

Summary

The NCAR Airborne Oxygen Instrument (AO2) was mounted onboard the NSF/NCAR GV HIAPER (Gulfstream-V High-performance Instrumented Airborne Platform for Environmental Research) aircraft (Tail Number N677F) during the ORCAS (O2/N2 Ratio and CO2 Airborne Southern Ocean Study) campaign with research flights from Punta Arenas, Chile from 5 January to 29 February 2016. The submitted AO2 data are in 1 flat ascii text file per flight. Each file contains 1 Hz interpolated values (of the original ~ 2.5-second data) matching the times in the RAF data files. The files are in NASA Ames 1001 format, with a final comment line of variable names (UT CO2_AO2orig O2_AO2orig APO_AO2orig CO2_AO2 O2_AO2 APO_AO2), spaces separating columns, and 9999.99 for missing data. The reported times correspond to when the air entered the inlet. This instrument measures O2/N2 ratio as well as CO2 concentration.

Data access

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Additional information

Identifier
Data Quality final
Versions
  • 0.1 (2016-03-14):

    These are the quicklook field-phase data

  • 0.2 (2016-09-08):

    These are the QAQC data

  • 1.0 (2017-03-07):

    Final release data.

(Only the current version of the data is available to order. If you have questions about a prior version, please email us.)
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Related projects
Spatial Type point
Frequency 1 second
Language English
Categories
Platforms
Instruments
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Temporal coverage

Begin datetime 2016-01-05 00:00:00
End datetime 2016-02-29 23:59:59

Spatial coverage


Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: -30.00, Minimum (South) Latitude: -80.00
Minimum (West) Longitude: -105.00, Maximum (East) Longitude: -30.00

Primary point of contact information

EOL Data Support <eol-datahelp@ucar.edu>

Additional contact information

Citation

Example citation following ESIP guidelines:

Stephens, B., et al. 2017. ORCAS Airborne Oxygen Instrument. Version 1.0. UCAR/NCAR - Earth Observing Laboratory. https://doi.org/10.5065/D6N29VC6. Accessed 11 Jul 2020.

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