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  • Station or cluster: CryoNet Station
  • Type: Primary
  • Attribute(s):
  • Belongs to cluster: Brunt Ice Shelf
  • WMO ID (if any): 89022
  • Latitude, longitude: -75.4, -26.5
  • Altitude and/or range (m): 30
  • Landscape: Iceshelf
  • Year established: 1957
  • Year ended (therefore inactive): Summer only since 2017
  • Year-round? Yes
  • Operations contact: Steven Colwell
  • Science contact: Steven Colwell
  • Data contact: Steven Colwell
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Primary CryoNet Station Information

Temperatures at Halley rarely rise above 0°C although temperatures around -10°C are common on sunny summer days. Typical winter temperatures are below -20°C with extreme lows of around -55°C.

There is 24-hour darkness for 105 days when residents are completely isolated from the outside world by the surrounding sea ice and impossible flying conditions.

Winds are predominantly from the east. Strong winds usually pick up the dusty surface snow, reducing visibility to a few metres.

Approximately 1.2 metres of snow accumulates each year on the Brunt Ice Shelf and buildings on the surface become covered and eventually crushed by snow. This part of the ice shelf is also moving westward by approximately 700 metres per year.

In 2013, Halley was made part of the network of 30 stations across the globe that form the World Meteorological Organization’s Global Atmosphere Watch (GAW) programme, becoming the 29th in the world and 3rd in Antarctica. Together, these stations provide reliable information on the chemical composition of the atmosphere and how it is changing.

Measurements of ozone, as well as meteorology, have been made at Halley since it was established in 1956. This long-term data enabled British scientists to discover the hole in the ozone layer in 1985.

Other Networks to Which This CryoNet Station Belongs

Measurement Methods Used

Data Information


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

Cryosphere Measurements

Element Variable Start Year End Year Frequency
SnowSnowpack profile2000Sporadic

Atmosphere Measurements

Element Variable Start Year End Year Frequency
MetAir temperature1957Continuous
MetHumidity/vapour pressure1957
MetWind speed and direction1957
MetAir pressure1957
MetTotal precipitation2012Continuous
MetTrace gases2000Continuous
RadiationDownwelling shortwave1989Continuous
RadiationUpwelling shortwave2012Continuous
RadiationDownwelling longwave2012Continuous
RadiationUpwelling longwave2012Continuous
RadiationSunshine duration1957Continuous

Last updated: 6 December 2017