by C.A. Varotsos & M.N. Efstathiou, January 2019 in JAtm&SolarTerrestrialPhysics
•The global warming during 1978–2018 was not more enhanced at high latitudes near the surface.
•The intrinsic properties of the lower stratospheric temperature are not related to those in the troposphere.
•The results obtained do not reveal the global warming occurrence.
by Judith Curry, January 25, 2019 in ClimateEtc.
A careful look at the early 20th century global warming, which is almost as large as the warming since 1950. Until we can explain the early 20th century warming, I have little confidence IPCC and NCA4 attribution statements regarding the cause of the recent warming.
This is an issue that has long interested me. Peter Webster wrote a previous post Mid 20th Century Global(?) Warming, which focused on the warm bump that culminated in the 1940’s. My interest in this period was reignited while working on my report Sea Level and Climate Change. Then, the recent paper by Zanna et al. discussed in Ocean Heat Content Surprises further made the wheels turn.
In response to the Ocean Heat Content thread, David Appell posted a link to this paper on twitter:
The early 20th century warming: Anomalies, causes and consequences