No Underlying Global Temperature Increase For 20 YearsPosted: April 21, 2015
By Paul Homewood
I was reminded about a paper from last year, authored by Ben Santer amongst others, Volcanic contribution to decadal changes in tropospheric temperature.
The paper looked at recent temperature trends in the lower troposphere, and attempted to isolate the effect of volcanoes and ENSO changes.
Despite continued growth in atmospheric levels of greenhouse gases, global mean surface and tropospheric temperatures have shown slower warming since 1998 than previously1, 2, 3, 4, 5. Possible explanations for the slow-down include internal climate variability3, 4, 6, 7, external cooling influences1, 2, 4, 8, 9, 10, 11 and observational errors12, 13. Several recent modelling studies have examined the contribution of early twenty-first-century volcanic eruptions1, 2, 4, 8 to the muted surface warming. Here we present a…
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