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Deployment of a scintillometer for optical turbulence investigation at NSA - Barrow

Moudry, Dana University of Alaska Fairbanks
Sassen, Kenneth University of Alaska Fairbanks
Vaucher, Gail Army Research Laboratory
Zak, Bernard Sandia National Laboratories

The University of Alaska Fairbanks in collaboration with the White Sands Army Research Lab deployed a reciprocal-path scintillometer to the ARM - NSA site at Barrow in fall 2004 for investigation of optical turbulence over the course of a year. The instrument consists of a transmitter and a receiver located approximately 1km apart. The instrument transmitter includes two arrays of nearIR LEDs which emit light in a 125-Hz pulsed mode. The receiver measures the temporal variability of the radiation after it traverses the ~1km path. The received signal strength is expected to vary with the amount of turbulence in the atmospheric boundary layer, which itself is strongly dependent on insolation. In the poster, the deployment strategy is presented, as well as problems encountered and some very preliminary data.

This poster will be displayed at the ARM Science Team Meeting.