UEA ENV Climatic Research Unit Climate Data Paleoclimate




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MISCELLANEOUS PALEOCLIMATE RECONSTRUCTIONS
(KEITH BRIFFA)

This page provides dendroclimatological (tree-ring) reconstructions from two papers by Keith Briffa.


Summer temperatures in the western U.S.

Briffa et al. (1992) reconstructed summer temperatures at each of 23 grid point locations in the western U.S. and also presented regional-mean summer temperature reconstructions for 5 regions. In this study, summer temperature is the summer half-year (i.e. averaged over April-September).

Map from Briffa et al. (1992)

Briffa KR, Jones PD and Schweingruber FH (1992) Tree-ring density reconstructions of summer temperature patterns across Western North America since 1600. Journal of Climate, 5, 735-754 (https://doi.org/10.1175/1520-0442%281992%29005%3C0735%3ATRDROS%3E2.0.CO%3B2).

Gridded summer temperature reconstructions. In "115" the data span 1850 - 1983. In "125" they span 1600 - 1983.

FilenameSizeDescription
osrreconout115.dat 50kb Data in normalised form. A line precedes each series, containing the mean and standard deviation. The data can be transformed into °C anomalies by multiplying each value by the standard deviation, adding the mean, subtracting 1000, then dividing by 10. This will give degree Celsius anomalies relative to the 1951-70 base period.
osrreconout125.dat 80kb Data in normalised form. A line precedes each series, containing the mean and standard deviation. The data can be transformed into °C anomalies by multiplying each value by the standard deviation, adding the mean, subtracting 1000, then dividing by 10. This will give degree Celsius anomalies relative to the 1951-70 base period.
osr115.dat 57kb Data in °C anomalies in a spreadsheet-style layout.
osr125.dat 93kb Data in °C anomalies in a spreadsheet-style layout.

Regional summer temperature reconstructions. Five series each spanning 1600 - 1982.

FilenameSizeDescription
wus1600.dat 24kb Data in °C anomalies relative to the 1881-1982 average

As well as the temperature reconstructions given above, code and input data to produce these reconstructions is also available.


European summer temperatures

Briffa et al. (1988) reconstructed summer temperatures at each of 25 grid point locations in Europe and also presented regional-mean summer temperature reconstructions for 3 regions. In this study, summer temperature is the summer half-year (i.e. averaged over April-September).

Regional timeseries from Briffa et al. (1988)
Three regional mean series (United Kingdom, Scandinavia, Central Europe). Data run from 1750 - 1975 and are plotted as °C anomalies from the base period 1951-70. This graph is also available as a PostScript file.

Briffa KR, Jones PD and Schweingruber FH (1988) Summer temperature patterns over Europe: A reconstruction from 1750 A.D. based on maximum latewood density indices of conifers. Quaternary Research, 30, 36-52 (https://doi.org/10.1016/0033-5894(88)90086-5).

Gridded summer temperature reconstructions. The data span 1750-1975 for 25 grid points.

FilenameSizeDescription
reconyears.dat 60kb Data in year-by-year shape maps. Values are °C anomalies relative to the 1951-1970 average.
quat88ts.dat 59kb Data in timeseries form. Values are °C anomalies relative to the 1951-1970 average, in a spreadsheet-style layout.

Regional summer temperature reconstructions. Three series (United Kingdom, Scandinavia, Central Europe) each spanning 1750-1975.

FilenameSizeDescription
centscanukrec.dat 5kb Data in °C anomalies relative to the 1951-1970 average

License

These datasets are made available under the Open Database License. Any rights in individual contents of the datasets are licensed under the Database Contents License under the conditions of Attribution and Share-Alike.

Please use the attribution Climatic Research Unit, University of East Anglia

Updated: May 2011