PYRANOMETEREXT

 

Evaluation of Heated Ventilators in the Arctic

1 August 2007 - 1 June 2009

Lead Scientist: Scott Richardson

Observatory: nsa, nsa

Due to the harsh conditions present at the ARM North Slope of Alaska site, the broadband radiometers have been equipped with electric heaters inside the ventilators to keep hoarfrost and snow from affecting the measurements. The proposed IOP is designed to gain an understanding of what effects the current ventilator heaters might be having on the basic measurements. We will investigate various permutations of the amount of ventilation and heating, as well as new heater designs, to perhaps optimize the ARM broadband measurement strategy for the NSA site. Overall, the IOP is targeted at improving both our understanding, and the quality and accuracy, of our ARM NSA measurements. This IOP builds on the results of "NSA Pyranometer IR Loss Study" IOP conducted from August, 2006 to July, 2007.

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