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Citation
French, J. and Murphy, D.J. (2021) Scanning Radiometer observations of hydroxyl airglow over Davis, Antarctica from 2017, Ver. 1, Australian Antarctic Data Centre - https://data.aad.gov.au/metadata/records/AAS_4157_Davis_UWOSCR_from_2017, Accessed: 2021-12-03
Title
Scanning Radiometer observations of hydroxyl airglow over Davis, Antarctica from 2017
Data Centre
Australian Antarctic Data Centre, Australia
Created Date
2021-03-03
Revision Date
2021-03-09
Parent record
AAS_4157_Davis_UWOSCR_1999-2016

Description

These are 1 minute sampled low resolution 'images' of the hydroxyl airglow layer over Davis station, Antarctica (68 degrees S,78 degrees E) derived using a scanning radiometer developed at the University of Western Ontario, Canada. The scans are a 16x16 pixel array and represent hydroxyl airglow variations in a small region (24x24 km) of the night sky in the zenith, approximately 87km above Davis. The instantaneous field-of-view of the 12cm aperture catadioptric telescope is 1 degrees, or a 1.5km radius field at the airglow layer height. Dwell time per 'pixel' is 0.22 sec. The instrument is sensitive in the 1.0 - 1.6 micron infrared region, which encompasses the bright hydroxyl (2-0), (3-1), (4-2) and (5-3) ro-vibrational bands. Observations are made in all cloud conditions between civil twilight (Sun less than 6 degrees below horizon) each year (between about the 6-Feb and 5-Nov at Davis).

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Purpose

Its purpose is to measure the wavelengths, phase speeds, periods and propagation direction of small scale gravity waves passing through the hydroxyl airglow layer.

Quality

Data files are stored as nightly scan records in a frame-by-frame sequence. There are known problems with data from several nights being combined into one file. There are filename issues which occur each year when the start or stop time (determined by and almanac lookup) crosses the 0UT boundary (0UT is 7am local time at Davis). This boundary crossing occurs ~24-Mar and ~17-Sep each year. There are some significant data gaps due to instrument malfunction and a minor problem identified with the pointing direction of the telescope due to 'slop' in the x-y stage controller.

Access

This dataset is publicly available for download from the provided URL.

Temporal Coverages

Spatial Coverages

Data Resolution

Latitude Resolution:
1.5 Kilometre(s)
Longitude Resolution:
1.5 Kilometre(s)
Vertical Resolution:
7 Kilometre(s)
Temporal Resolution:
1 Minute(s)

Science Keywords

Additional Keywords

  • HYDROXYL AIRGLOW

Locations

  • CONTINENT > ANTARCTICA > DAVIS STATION
  • VERTICAL LOCATION > MESOSPHERE
  • GEOGRAPHIC REGION > POLAR

Platforms

  • FIXED OBSERVATION STATIONS

Instruments

  • Scanning Radiometer

Researchers

  • french, john (INVESTIGATOR,TECHNICAL CONTACT)
  • murphy, damian (INVESTIGATOR,DIF AUTHOR)

Use Constraints

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4157_Davis_UWOSCR_from_2017 when using these data.

Creative Commons License