In the mountains about 20 miles east of Santa, Idaho, a tall tower is taking some very quick, very careful measurements. Every tenth of a second for about year, the 130-foot tower, which was built by University of Idaho scientists, has measured temperature, water vapor, carbon and wind speed. The information should help give a clearer picture of the way carbon, a key contributor to global warming, behaves in the atmosphere around mountainous terrain with lots of year-round vegetation.