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The British Antarctic Survey’s new Halley VI station
Steve Colwell
Overview
• The new Halley VI station.• The meteorological equipment that has been.
installed at the Halley VI site.• Clean air facility (CasLab).• Cooperative Global Air Sampling Network.• Snow sampling.
JAWS (Just Another Weather Station)
• Pressure• Temperature• Humidity• Wind speed• Wind direction• Sun duration• Incoming and outgoing long and
shortwave radiation
• 2 Biral LPS (Laser Precipitation Sensor)– Uses an infra-red laser to measure water
droplets and snow that pass between its sensor heads, it measures the reduction in the received signal and the length of time of the reduction and from this it can calculate the diameter of the particle and the fall speed
• These are mounted at 5m and 10m to try to estimate drifting and blowing snow.
Daily radiosonde launches at using a Vaisala MW31 ground station, RS92 radio-sondes and 350gram balloons.
Ozone is measured using a Dobson spectrophotometer
Atmosphere aerosol is measured using a PredePOM-01 sun photometer.Cloud height is measured using a Vaisala CT25KCeilometer.
CasLab
Currently measured
• Low and hi volume aerosol sampling. • Aethelometer (black carbon).• Surface ozone. • Mini Max DOAS (differential optical
absorption spectrometer)• CPC (condensation particle counter)
Installing this season• CO instrument.• Picarro analyser measuring CO2 and
CH4• Sodar• Some boundary layer meteorology on
the 30m mast• Paperwork is being prepared to apply to
have GAW global status
Cooperative Global Air Sampling Network
Snow sampling• Snow samples are collected and melted
and then the water is sent to International Atomic Energy Agency (IAEA) in Vienna for sampling.
• Snow pits are dug during the summer season to make measurements of snow density.
Questions