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Updated 11 October, 2003

Strategic Plan for the Climate Change Science Program Final Report, July 2003

Figure 12-1
from Annex C
(Graphics and Photography Source Information)

Figure 12-1a: Three-dimensional representation of the latitudinal distribution of atmospheric carbon dioxide (CO₂) in the marine boundary layer. The data are from the NOAA Climate Monitoring and Diagnostics Laboratory (CMDL) cooperative air sampling network. The surface represents data smoothed in time and latitude. Source: Pieter Tans and Thomas Conway, NOAA CMDL Carbon Cycle Greenhouse Gases, Boulder, Colorado.

Figure 12-1b: The NOAA CMDL Carbon Cycle Greenhouse Gases group operates 4 measurement programs. In situ measurements are made at the CMDL baseline observatories: Barrow, Alaska; Mauna Loa, Hawaii; Tutuila, American Samoa; and South Pole, Antarctica. The cooperative air sampling network includes samples from fixed sites and commercial ships. Measurements from tall towers and aircraft began in 1992. Presently, atmospheric CO₂, methane, carbon monoxide, hydrogen, nitrous oxide, sulfur hexafluoride, and the stable isotopes of CO₂ and methane are measured. Source: Pieter Tans, NOAA CMDL Carbon Cycle Greenhouse Gases, Boulder, Colorado.

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