Borehole Data and Climate Reconstruction
The map above shows the location of borehole sites in the database that
we have analyzed to date. The diagram below is a global perspective of
surface temperature change over the last five centuries, averaged from
979 individual reconstructions. The thick red
line represents the mean surface temperature since 1500 relative to the
present-day. The shading represents ± one standard error of the mean.
Shown in blue for comparision is the global mean surface
air temperature (five year running average) derived from instrumental
records by P.D. Jones and colleagues at the University of East
Anglia <http://www.cru.uea.ac.uk/>.
Welcome to the Borehole Temperatures and Climate Reconstruction Database
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