From Australian Oceans Data Network
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ASPeCt bridge-based sea-ice observations - 2007 to 2013

Created 23/06/2025

Updated 23/06/2025

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The Antarctic Sea ice Processes and Climate [ASPeCt] data sets submitted here have been collected systematically from the bridge of an icebreaker, while it transited through the pack ice. Quantifiable observations of sea ice thickness and related characteristics of the sea ice, snow, ocean and surface atmosphere are recorded hourly while the vessel moves through the sea ice. If the vessel is stopped or has not moved at least 6nm since the previous observation, no observation will be conducted. The observation protocol has been endorsed by the Scientific Commission for Antarctic Research (under their ASPeCt programme) as the preferred method for conducting ship-based observations of sea-ice characteristics. Details can be found in Worby and Allison [1999] The spreadsheet information below is also included in the word document in the download file. The relevant spreadsheets (xls files) contain the following information: Header name Physical parameter Unit Year Year
Date Day/Month/Year Julian Day Day of year Time (UT) Time of day in Universal time: Hours/Minutes/Seconds
Lat (oN) Latitude oN Lon(oE) oE Conc Total ice concentration Tenth OW Open-water classification See Worby and Allison [1999] c1 Ice concentration of primary ice category Tenth ty1 Ice type of primary ice category See Worby and Allison [1999] iz1 Thickness of primary ice category cm f1 Floe size of primary ice category See Worby and Allison [1999] t1 Topography of primary ice category See Worby and Allison [1999] s1 Snow type on primary ice category See Worby and Allison [1999] sz1 Snow thickness on primary ice category cm c2 Ice concentration of secondary ice category Tenth ty2 Ice type of secondary ice category See Worby and Allison [1999] iz2 Thickness of secondary ice category cm f2 Floe size of secondary ice category See Worby and Allison [1999] t2 Topography of secondary ice category See Worby and Allison [1999] s2 Snow type on secondary ice category See Worby and Allison [1999] sz2 Snow thickness on secondary ice category cm c3 Ice concentration of tertiary ice category Tenth ty3 Ice type of tertiary ice category See Worby and Allison [1999] iz3 Thickness of tertiary ice category cm f3 Floe size of tertiary ice category See Worby and Allison [1999] t3 Topography of tertiary ice category See Worby and Allison [1999] s3 Snow type on tertiary ice category See Worby and Allison [1999] sz3 Snow thickness on tertiary ice category cm Sea Sea-surface temperature oC Air Surface-air temperature oC

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Additional Info

Field Value
Title ASPeCt bridge-based sea-ice observations - 2007 to 2013
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/0f2134ab-f396-4f30-aa51-4246597c6b85
Contact Point
Australian Ocean Data Network
metadata@aad.gov.au
Reference Period 01/10/2007 - 31/03/2013
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        60.0,
        -67.4
      ],
      [
        150.0,
        -67.4
      ],
      [
        150.0,
        -58.0
      ],
      [
        60.0,
        -58.0
      ],
      [
        60.0,
        -67.4
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "ASPeCt bridge-based sea-ice observations - 2007 to 2013". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/aspect-bridge-based-sea-ice-observations-2007-to-2013