Eike-Blabla.
Es gibt wissenschaftliche Gründe für die Änderung, hier erklärt:
https://skepticalscience.com/first-look-at-hadcrut4.html
https://www.metoffice.gov.uk/hadobs/hadcrut4/faq.html
Zitat FAQ: "How does this data set differ from HadCRUT3?
HadCRUT4 has more comprehensive data. It includes an increased number of land stations, as well as more up-to-date records available from land stations that were already in HadCRUT3. These updates to the land station database are described in the CRUTEM4 paper. HadCRUT4 also includes a larger number of sea-surface temperature records and new bias adjustments for sea surface temperature measurements"
Aber Eike will ja ausdrücklich nicht wissenschaftlich tätig sein.....
Die machen ihren Wind lieber mit Verdächtigungen.....