CPC particle count at Halley VIa CASLab 2020

A TSI CPC (Condensation Particle Counter) Model 3010 was installed at Halley''s Clean Air Sector Laboratory (CASLab), a mile from the station''s generator, in the (austral) summer of 2019/20 and began collecting data in February as a long term dataset. The inlet is a 3m length of antistatic tubing, with a portion left untethered so that it can move with the prevailing wind. This is to prevent icing of the inlet by allowing the inlet to stay out of the direct line of any snow or ice being blown around. Any movement from the wind should allow any hoar frost that builds up to fall off. The instrument was installed by Joshua Eveson and the primary contact for the dataset is Freya Squires.