John
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Global mean temperature: HadCRUT5
I am John Kennedy, a scientific consultant with over 20 years experience in climate research, dataset development and climate monitoring. My research work focuses on understanding and communicating uncertainty in climate data.
I developed the HadSST4 dataset which is the ocean component of the widely used HadCRUT5 and Berkeley Earth global temperature datasets. I also developed the sea-surface temperature component of the HadISST2 dataset used in the ERA5 reanalysis.
I am cochair of the WMO Expert Team on Monitoring and Communicating Climate Variability and Change and lead author of the WMO's flagship State of the Global Climate reports from 2018 to present.
A review of uncertainty in in situ measurements and data sets of sea surface temperature
How do we know the world has warmed
A large discontinuity in the mid-twentieth century in observed global-mean surface temperature
A call for new approaches to quantifying biases in observations of sea-surface temperature
