Hittade följande intressanta graf över 3000 år av temperaturdata från Syd Afrika. Studera den noga.
Global Warming anyone?
Holmgren, K., Tyson, P.D., Moberg, A. and Svanered, O. 2001. A preliminary 3000-year regional temperature reconstruction for South Africa. South African Journal of Science 97: 49-51.
Maximum annual air temperatures in the vicinity of Cold Air Cave (24°1′S, 29°11′E) in the Makapansgat Valley of South Africa were inferred from a relationship between color variations in banded growth-layer laminations of a well-dated stalagmite and the air temperature of a surrounding 49-station climatological network developed over the period 1981-1995, as well as a quasi-decadal-resolution record of oxygen and carbon stable isotopes (MWP: AD 800-1100): Peak warmth of the Medieval Warm Period was as much as 2.5°C warmer than the Current Warm Period (AD 1961-1990 mean)