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Map:

Climate Timeline
This map provides overview climate information for the Climate Time Line. Designed as an online tool allowing users to examine climate change and variability at different time scales, the Climate Time Line or CTL is currently under development through a CIRES Innovative Research Grant at the National Geophysical Data Center (NGDC) at NOAAs Boulder Laboratory. Beginning with daily diurnal cycles and climate and weather forecasts for the near-term, the CTL uses the exponential powers of ten to frame time periods from annual to 100,000 year scales, with a brief overview of natural history and climate for even older time frames. Each time period has an overview and sections on climate science, climate history and resources, including online links and inquiry questions for further exploration. For more information contact Mark McCaffrey or Dan Kowal.

Layers:

World Precipitation Zones
The precipitation maps show the mean annual or monthly liquid and solid precipitation. The distribution of mean precipitation is shown by lines of constant precipitation. They were primarily laid out using various cartographic materials, including special climatic, national, and regional atlases and maps. Observation data from various yearbooks and reference books (national and otherwise) were also used. The data was obtain from ESRI.
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Average Annual High Temp (deg C)

World Temperature Zones (Annual)
The temperature maps show mean annual or mean monthly air temperature at the ground. The mean air temperature maps were compiled with data from about 9,000 meteorological stations. Linear interpolation of the station data was possible only on flat plains far from the coasts. Elsewhere on the map, the isolines were laid out considering geographical situation. The isolines agree with the air temperature observations at each station. The data was obtained from ESRI.
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Cities

Countries
This layer is an ESRI reference layer that contains countries of the world.
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Ecoregion Province by Robert C. Bailey
The most detailed Ecoregion classification used in the Bailey Ecoregions of the Continents dataset. The privinces were reprojected by resampling from an undocumented projection to geodetic coordinates at the World Conservation Monitoring Center using coastal control points.
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Oceans and Seas

Population

Earth Image