• Overview
• Briefing document
• Media
• Temperature series
• Methods and data
• Updates and errata
• FAQ
• Paper

Coverage bias in the HadCRUT4 temperature record

Kevin Cowtan and Robert Way

Updates and errata

Updates:

• The datasets will not be updated past June 2021 - please use HadCRUT5 instea d.
• update.131030.pdf Temperature reconstruction by domain: preliminary analysis
  Further work on geographical variations between the surface and satellite data and preliminary results from reconstruction of the separate land and ocean data. The code is already in the distributed coverage.zip file.
• update.140106.pdf Temperature reconstruction by domain: version 2.0 temperature series
  Description of a new temperature reconstruction running from 1850 to the present based on separate global reconstructions of the HadCRUT4 land and ocean ensembles.
• update.140205.pdf Hybrid temperature reconstruction by domain
  Description of six new satellite era temperature reconstructions runnings from 1979 to the present based on separate global reconstructions of the HadCRUT4 land and ocean ensembles and GHCNMv3 land data, by kriging and hybrid with UAH satellite and MERRA reanalysis data.
• update.140404.pdf Reconciling temperature series
  An investigation into why our temperature trends are higher than those for GISTEMP.
• update.171107.pdf COBE-SST2 based land-ocean dataset
  A long temperature reconstruction using COBE-SST2 in place of HadSST3, relevant to "hiatus" discussions.


• gleisner-response.pdf Response to Gleisner et al. (2015)
  A response to a paper in GRL which failed to reproduce our results (code). Compare with Simmons and Poli (2014).

As of 2014-04-21 subtitles have been added to each of the update documents to make them easier to reference.

Errata: