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Global Change Master Directory (GCMD)
Observatory Operations - All Sky Imager Data from the Australian Antarctic Territory and Macquarie Island
Entry ID: ASAC_527_allsky


Summary
Abstract: All Sky Imager Systems (ASIS) are deployed at Casey, Davis, Macquarie island and Mawson. These systems are autonomous data collection systems which record All Sky Imager data during periods of darkness at the stations.

The data are collected using a monochromatic video camera fitted with an Image Intensifer and a Fish eye lens. A filter (normally 558 nm) is also fitted to the cameras. (this can be varied at Davis but the filter in use) is stamped onto the image)

Images are digitised by a controlling PC and written to hard disk as JPEG images. Images are sorted into daily folders and returned to Australia annually for processing into MPEG files for each UTC day.

The end result is a short All Sky movie containing images for the periods of darkness between 0000 and 2359 UTC each day of the year. Each MPEG file has a short preamble which shows the Station latitude and longitude as orientation information. Each frame is stamped with time, date, filter and exposure information.

Related URL
Link: View Related Information
Description: Download point for the data


Link: View Related Information
Description: Public information for ASAC project 527


Link: View Related Information
Description: Public information for ASAC project 22


Link: View Related Information
Description: Public information for ASAC project 23


Link: View Related Information
Description: Citation reference for this metadata record and dataset


Link: View Related Information
Description: Citation reference for this metadata record and dataset

Geographic Coverage
 N: -68.0 S: -68.0  E: 78.0  W: 78.0
 N: -66.0 S: -66.0  E: 111.0  W: 111.0
 N: -67.0 S: -67.0  E: 63.0  W: 63.0
 N: -54.0 S: -54.0  E: 158.0  W: 158.0

Data Set Citation
Dataset Creator: Morris, R.J., Burns, G. and Symons, L.
Dataset Title: Observatory Operations - All Sky Imager Data from the Australian Antarctic Territory and Macquarie Island
Dataset Series Name: CAASM Metadata
Dataset Release Date: 2004-06-29
Dataset Publisher: Australian Antarctic Data Centre
Version: 1
Online Resource: https://data.aad.gov.au/aadc/metadata/metadata_redirect.cfm?md=/AMD...


Temporal Coverage
Start Date: 1999-01-01
Stop Date: 2011-12-31


Location Keywords
OCEAN > SOUTHERN OCEAN
OCEAN > SOUTHERN OCEAN > MACQUARIE ISLAND
CONTINENT > ANTARCTICA > Davis
CONTINENT > ANTARCTICA > Mawson
CONTINENT > ANTARCTICA > Casey
GEOGRAPHIC REGION > POLAR
VERTICAL LOCATION > IONOSPHERE


Data Resolution
Temporal Resolution: 30 Second(s)


Science Keywords
ATMOSPHERE >ATMOSPHERIC RADIATION    [Definition]
SUN-EARTH INTERACTIONS >IONOSPHERE/MAGNETOSPHERE DYNAMICS >AURORAE    [Definition]
SUN-EARTH INTERACTIONS >SOLAR ENERGETIC PARTICLE PROPERTIES >ENERGY DEPOSITION    [Definition]
SUN-EARTH INTERACTIONS >SOLAR ACTIVITY    [Definition]
SOLID EARTH >GEOMAGNETISM >MAGNETIC FIELD    [Definition]


Platform
FIXED OBSERVATION STATIONS    [Information]


Instrument
ASC >All-Sky Camera    [Information]


Quality
All Sky Imager Data
Data are recorded with a timing accuracy of +/- 1 second. Typical time resolution is 1 frame per 30 seconds although this can be interpreted from the time stamps on each frame.

Every frame has the following information stamped in the corners:
- Station Name
- UTC Time
- Day Number
- Year Number
- Exposure Time
- Filter Wavelength

In addition, each file contains preface frames giving latitude and longitude as well as orientation information.


Access Constraints
Data are available for use in research activities provided consent of, and suitable reference to experiments and principal investigator is given.

Data stored as video and image files (mpeg and jpeg).

Data are available in nightly MPEG files and are typically between 10 Mbytes and 60 Mbytes in length depending on the time of year.

Owing to the amount of data, these files are stored on the ATMOS server at the Australian Antarctic Division. Contact the AADC to access the data.


Use Constraints
This data set conforms to the PICCCBY 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=ASAC_527... when using these data.


Keywords
AIRGLOW
ANTARCTICA
AURORA
AURORAE
COSMIC NOISE
DATE
ELECTRONS
IONOSPHERE
LATITUDE
LONGITUDE
MAGNETIC FIELDS
MAGNETOMETER
POSITIVE DOWNWARDS
POSITIVE GEOGRAPHIC EAST
POSITIVE GEOGRAPHIC NORTH
RIOMETER
SOLAR EVENTS
STATION


Data Set Progress
COMPLETE


Originating Center
Australian Antarctic Division


Data Center
Australian Antarctic Data Centre, Australia    [Information]
Data Center URL: http://data.aad.gov.au

Data Center Personnel
Name: DATA OFFICER AADC
Phone: +61 3 6232 3244
Fax: +61 3 6232 3351
Email: metadata at aad.gov.au
Contact Address:
Australian Antarctic Division
203 Channel Highway
City: Kingston
Province or State: Tasmania
Postal Code: 7050
Country: Australia



Distribution
Distribution_Media: HTTP
Distribution_Format: Video, Images
Fees: free


Personnel
RAY J. MORRIS
Role: INVESTIGATOR
Contact Address:
Australian Antarctic Division
203 Channel Highway
City: Kingston
Province or State: Tasmania
Postal Code: 7050
Country: Australia


GARY BURNS
Role: INVESTIGATOR
Role: TECHNICAL CONTACT
Contact Address:
Australian Antarctic Division
203 Channel Highway
City: Kingston
Province or State: Tasmania
Postal Code: 7050
Country: Australia


LLOYD SYMONS
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Phone: +61 3 6232 3361
Fax: +61 3 6232 3496
Email: lloyd.symons at aad.gov.au
Contact Address:
Australian Antarctic Division
203 Channel Highway
City: Kingston
Province or State: Tasmania
Postal Code: 7050
Country: Australia


Extended Metadata Properties
(Click to view more)

Creation and Review Dates
DIF Creation Date: 2004-06-28
Last DIF Revision Date: 2019-03-20



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