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Carbon Dioxide Information Analysis Center ( CDIAC responds to data and information requests from users from all over the world who are concerned with the greenhouse effect and global climate change. CDIAC's data holdings include records of the concentrations of carbon dioxide and other radioactively active gases in the atmosphere; the role of the terrestrial biosphere and the oceans in the biogeochemical cycles of greenhouse gases; emissions of carbon dioxide to the atmosphere; long-term climate trends; the effects of elevated carbon dioxide on vegetation; and the vulnerability of coastal areas to rising sea level.

NOAA Paleoclimate Central ( Welcome to the Paleoclimatology Branch of the National Climatic Data Center. We provide the paleoclimatic data and information needed to understand the climate of the past, in order to assess the current and potential future climate in the context of natural climate variability.

  • Paleoclimate Drought Data for North America (

Types of Paleoclimate data (

Paleoclimate lecture (

PaleoMap Project ( - The goal of the PALEOMAP Project is to illustrate the plate tectonic development of the ocean basins and continents, as well as the changing distribution of land and sea during the past 1100 million years.

  • Where were the continents in the geological past? (
  • What was the climate like on the continents in the geological past? (

Ultimate Tree Ring Web Pages ( makes available information about dendrochronology on the Internet for a permanent repository of information that is a free, comprehensive, and easily understandable.

World Wide Web Virtual Library (

Revised on: 3 February, 2005