Has global warming already arrived?

Elsevier Journal of Atmospheric and Solar-Terrestrial Physics Volume 182, January 2019, Pages 31-38 C.A.Varotsos, M.N.Efstathiou https://doi.org/10.1016/j.jastp.2018.10.020 Highlights 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.