Posts Tagged ‘tree rings’

Climategate reveals that using tree ring data is not always reliable, the temperature calculated from tree rings didn’t match up to actual instrument readings, that’s why they threw it out. Makes a lot of sense, I’d do the same. Today scientist know precisely what the variables are but for some unknown reason they are unable to calculate the temps using tree rings. However they don’t question the reliability of data prior to instrument readings, when we knew less about the environment of those times than we do today.

So what makes tree ring data such a reliable source of past climate?

Say for a fact that we know that man is the main driving factor behind climate change. Just because the temperature has risen from a global minimum and CO2 has increased during the same time frame doesn’t mean that CO2 and methane are driving the temperature change.
For MTR and others who spout the use of tree rings etc to recreate past temperature history, than why does the US EPA now is seriously doubting this information? That is one of the points that I am trying to make, the more research into the climate the more the AGW models are being filled with doubts.