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Data Tables of Global and Hemispheric Temperature Anomalies

Global and hemispheric temperature anomalies - land and marine instrumental records. These global and hemispheric temperature anomaly time series, which incorporate land and marine data, are continually updated and expanded by P. Jones of the Climatic Research Unit (CRU) with help from colleagues at the CRU and other institutions. The land portion of the database from which the Jones et al. time series are computed consists of surface air temperature (SAT) data (land-surface meteorological data and fixed-position weather ship data) from over 3000 station records that have been corrected for non-climatic errors, such as station shifts and/or instrument changes (Jones 1994). The marine data used are compiled at the Hadley Centre of the United Kingdom Meteorological Office and consist of sea surface temperatures (SSTs) that incorporate in situ measurements from ships and buoys. The land and marine data components are combined by first interpolating each to the same 5° x 5° latitude/longitude grid boxes. The combined version takes values from each component and weights the grid boxes where both occur (coastlines and islands).

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