Pieter Tans, head NOAA ESRL Carbon Cycle Greenhouse Gases group, at the 1,000 foot "Tall Tower" observatory east of Erie, Tuesday morning, July 31, 2007. NOAA Scientists launched a new program to gather regional CO2 data, using "Tall Towers" and a new sof
KEN PAPALEO, Pieter Tans, head NOAA ESRL Carbon Cycle Greenhouse Gases group, at the 1,000 foot "Tall Tower" observatory east of Erie, Tuesday morning, July 31, 2007. NOAA Scientists launched a new program to gather regional CO2 data, using "Tall Towers" and a new sof (07/31/2007), [435261847] . Denver Public Library Digital Collections, accessed 14/01/2026, https://digital.denverlibrary.org/nodes/view/810499