Hemispheric and large‐scale land‐surface air temperature variations: An extensive revision and an update to 2010

This study is an extensive revision of the Climatic Research Unit (CRU) land station temperature database that has been used to produce a grid‐box data set of 5° latitude × 5° longitude temperature anomalies. The new database (CRUTEM4) comprises 5583 station records of which 4842 have enough data for the 1961–1990 period to calculate or estimate the average temperatures for this period. Many station records have had their data replaced by newly homogenized series that have been produced by a number of studies, particularly from National Meteorological Services (NMSs). Hemispheric temperature averages for land areas developed with the new CRUTEM4 data set differ slightly from their CRUTEM3 equivalent. The…

• DF
  Department for Environment, Food and Rural Affairs, UK Government

  Award: GA01101
• UO
  University of East Anglia
• JI
  Joint Information Systems Committee
• MO
  Met Office

  Award: GA01101