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Metadata

  • Station or site: CryoNet Station
  • Type: Reference
  • Attribute(s): Research
  • Belongs to site: Davis Bureau of Meteorology Station
  • WMO ID (if any): 89571
  • Shape: point
  • Latitude, longitude: -68.573, 77.939
  • Altitude and/or range (m): 0; 0-0
  • Landscape: Seaice
  • Year established: 1957
  • Year-round? Yes
  • Operations contact: Petra Heil
  • Science contact: Petra Heil
  • Data contact: Petra Heil
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Davis main AFIN station
Reference CryoNet Station Information

Measurements of land-fast sea-ice have been carried out from Davis Station intermittently since the late 1950s. The routine measurements were formalized through an Australian Antarctic Science project entitled ‘East Antarctic near surface cryospheric and atmospheric observatory’. Long-term observations of fast-ice provides valuable indicators of change in the Antarctic ocean-ice-atmosphere system. The fast-ice measurements from Davis are included in the Coasts and Oceans theme of the State of the Environment report.

Fast-ice data can be analysed for indicators of change, and then, for example, related to atmospheric events. For this reason, we are not only interested in the snow and ice thickness, but also in the dates of ice formation, and ice break-out, including ice removal due to autumn storms or blizzards. Shifts in the date of ice formation, maximum ice thickness, etc., may be indicators of larger-scale changes.

The observations of fast-ice primarily are weekly measurements of ice thickness at a set of fixed locations. Data on the level of seawater in the drill-hole (freeboard), and the thickness of snow on top of the sea ice, are also recorded simultaneously at each sampling location. In addition, information regarding the dates of ice-formation and ice-breakout, as well as observations of fast-ice extent, are compiled to build up complete records of the changes in fast ice conditions both seasonally and interannually.

Other Networks to Which This CryoNet Station Belongs

Other relevant measurement method documents:

http://seaice.acecrc.org.au/wp-content/uploads/2013/09/Heil_Gerland_Granskog_TCD_2010.pdf

Data Information

Publications

Allison, I., Antarctic sea ice growth and oceanic heat flux, In: Sea Level, Ice and Climate Change Proceedings of the IUGG Canberra Symposium, Dec. 1979, IAHS publ. No. 131, 161--170, 1981.

Heil, P., Interactions between local atmospheric conditions and fast ice at Davis Station, East Antarctica, J. Geophys. Res., 111, C05010, 2006.

Heil, P., I. Allison, and V.I. Lytle, Seasonal and interannual variations of the oceanic heat flux under a landfast Antarctic sea ice cover, J. Geophys. Res., 101 (C11), 25741--25752, 1996.

Measurements

The measurements made at Davis main AFIN station are listed in the following tables. (Note: If End Year is blank, measurements are ongoing.)

Cryosphere Measurements

Element Variable Start Year End Year Frequency
SnowDepth1957Continuous
SeaiceThickness1957Continuous
SeaiceConcentration2009Continuous
SeaiceType1957Continuous
SeaiceExtent1957Continuous
SeaiceAge1957Continuous
SeaiceTemperature2009Continuous
IcebergIceberg position1999Continuous
IcebergSize1999Continuous

Atmosphere Measurements

Element Variable Start Year End Year Frequency
MetAir temperature2009Continuous
MetHumidity/vapour pressure2009Continuous
MetWind speed and direction2009Continuous
MetAir pressure2009Continuous

Last updated: 31 May 2017