Carbon Dioxide Information Analysis Center. 2003. Trends Online: A Compendium of Data on Global Change. Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tennessee.

This document provides synopses of frequently used time series of global-change data:

• historical and modern records (from ice cores and current monitoring stations) of atmospheric concentrations of carbon dioxide (CO2)
• atmospheric concentrations of methane
• isotopic measurements (14C et al.) for atmospheric greenhouse gases
• estimates of global, regional, and national CO2 emissions from the combustion of fossil fuels, gas flaring, and the production of cement global emissions estimates for methane (CH4)
• carbon flux from land-cover change
• long-term temperature records, whose spatial coverage ranges from individual sites to the entire globe and from the Earth’s surface to the lower stratosphere
• total cloud amount over China
• ecosystems (area and carbon content)