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
- ORDER data for delivery by FTP
- user agreement required
Additional information
Identifier | |
Data Quality | final |
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Spatial Type | point |
Frequency | 1 second |
Language | English |
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Instruments | |
GCMD Science Keywords | Expand keywords |
Documentation |
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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 <datahelp@eol.ucar.edu>
Additional contact information
- author: Britton B. Stephens <stephens@ucar.edu>
- author: Jonathan Bent <jonathan.bent@noaa.gov>
- author: Andrew Watt <watt@ucar.edu>
- author: Ralph F. Keeling <rkeeling@ucsd.edu>
- author: Eric J. Morgan <ejmorgan@ucsd.edu>
- author: Sara Afshar <safshar@ucsd.edu>
Citation
Stephens, B., et al. 2021. ORCAS Airborne Oxygen Instrument. Version 2.0. UCAR/NCAR - Earth Observing Laboratory. https://doi.org/10.5065/D6N29VC6. Accessed 08 Dec 2024.
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