The most important indicator of global warming, by far, is the land and sea surface temperature record. This has been criticized to date in several ways, including the choice of stations and the methods for correcting systematic errors.
Initiated and sponsored by Novim, the Berkeley Earth Surface Temperature study set out to to do a new analysis of the global surface temperature record in a rigorous manner that addresses this criticism.
The project team is using over 39,000 unique stations, more than five times the 7,280 stations found in the Global Historical Climatology Network Monthly data set (GHCN-M) that has served as the focus of many climate studies to date.
Novim's aim is to resolve current criticism of the former temperature analyses, and to prepare an open record that will allow rapid response to further criticism or suggestions. The results will include not only the team's best estimate for global temperature change, but estimates of uncertainties in the record, the complete raw and normalized data bases and all of the algorithms and techniques used by the team.
Four papers are in peer-review, and project results are now available at the links below.
A free educational iPad/iPhone app will be released soon.
Temperature Study Group leader profiled in November edition of Atlantic
Economist summary of the surface temperature study
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