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GEO yearbook 2003
… including on air quality, marine protected areas, and ozone protection. UNEP is more than ever aware of its … Measurements in 2004 recorded an unprecedented surge in atmospheric carbon dioxide (CO2) levels. The value of 379 … Source: NOAA 2004 340 350 360 370 Figure 1: Increase in atmospheric carbon dioxide levels registered at the Mauna Loa …