Yndestad 2022 Publication of Beck’s CO2 series

Harald Yndestad
Norwegian University of Science and Technology,
N-6025, Aalesund, Norway.

A surprise e-mail
On Christmas Day 2008, I received an e-mail from the German researcher Ernst-Georg Beck. He asked me to analyze an atmospheric CO2 time-series from 1820 to 1960. A CO2 time-series from 1820 was something special. Next day I went to work, analyzed the time-series, wrote a short note and e-mailed back a comment. It was all done in an hour. I wrote that there was noth- ing special about this time-series. The CO2 variations coincided with North Atlantic water sur- face temperature from 1900 to 1960 (Yndestad et al. 2008) [1].

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