Ojibway Tower in winter. Isle Royale's remote location and severe winter makes it one of the nation's toughest monitoring sites to access. The U.S. Coast Guard transports National Park Service research teams via helicopter. Some of Ojibway Tower's air-monitoring instruments. You may see these or others today.
Instruments vary as technology and research change.
Camera and housing. Systematically-timed photos document air clarity. Clear air, crucial for park vistas, is a critical park feature. Scientists must relate weather conditions to air quality. Provide power for air-quality instruments and for the park radio system.