Extinction Rebellion are threatening to shut down Heathrow Airport with drones

[Ian W]

Originally Posted by cwatters

[b]

https://www.ncdc.noaa.gov/global-war...erature-change


Temperature change (light blue) and carbon dioxide change (dark blue) measured from the EPICA Dome C ice core in Antarctica (Jouzel et al. 2007; Lüthi et al. 2008).

and yes there are times when temperature changes lead C02 changes. You can find an explanation for that here. https://skepticalscience.com/co2-lags-temperature.htm

The assumption being made is that CO2 is 'trapped' in bubbles in the ice. However, CO2 is extremely soluble in water as carbonic acid and will diffuse through the ice so the bubble contents are not a reliable metric. ( CO2 diffusion in polar ice ) There is also research that indicates that the bubbles may form when the cores are drilled and rapidly decompressed.

There are many temperature/CO2 graphics some that go back further and use multiple proxies such as plant stomata give a different picture, Such as:



You will note first that things have been a LOT warmer in the past and that there is a homeostasis mechanism that seems to stop any overheating. Note also that we are at the cold end of the Holocene which is an interglacial in an ice age. The Holocene optimum around 10,000 years ago, the Minoan optimum,the Roman Optimum, the Medieval Warm Period were all warmer than present and were successively colder optima.
To assist with the panic the Y axes of the published temperature graphs are wildly expanded to make even minor changes look extreme. The current temperature 'anomaly is approximately 0.35C (from UAH) which a met observer would round down to zero.