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O-Buoy -  An automous chemistry buoy for the Arctic Ocean
Todd Valentic
SRI International

Don Perovich

Patricia Matrai
Bigelow Laboratories for Marine Science
O-buoy deployed at Elson Lagoon near Barrow, AK
O-buoy deployed at Elson Lagoon
(click on image for larger version)
Part of Lithium primary battery
Part of Lithium primary battery
(click on image for larger version)
System Solar icon Battery icon An autonomous buoy powered by Lithium primary batteries and lead-acid rechargeables replenished through a solar array.
Location Test deployment in the Elson Lagoon at Barrow, Alaska.   (71.3406° N, 156.545° W)
Description Overview

The O-Buoy project is a collaborative effort to develop an autonomous buoy to measure atmospheric chemistry. The O-Buoy has evolved considerably from the first concept (left below) to the buoy that was installed in February 2009 (right below). The buoy has several components including the main buoy housing, a floatation collar, and a mast where instruments are mounted.  The power system was a joint development by Purdue University and the U.S. Army Cold Regions Research and Enginerring Laboratory.

A Web-based interface to track instrument data and system performance:  http://transport.sri.com/obuoy/monitor

The project Website with detailed information about the instrumentation and power system. The site has many photos of the buoy structure and deployment.

Comms SRI International has developed a communications controller, utilizing a low power single board computer running Linux, and an Iridium A3LA-SA transceiver. This system provides scheduled data transfers from the buoy along with updates uploaded to the instruments.