HT American Thinker

A must read for those trying to understand what Climategate is about.  I’m staring a new post here from my previous:

CRU Raw Temp Data Shows No Significant Warming Over Most Of The World


American Thinker

Understanding Climategate’s Hidden Decline

So please allow me to explain in what I hope are easily digestible terms.

First and foremost — contrary to what you’ve likely read elsewhere in the blogosphere or heard from the few policymakers and pundits actually addressing the issue, it was not the temperature decline the planet has been experiencing since 1998 that Jones and friends conspired to hide. Certainly, the simple fact that the email was sent in November of 1999 should have allayed any such confusion.

In fact, the decline Jones so urgently sought to hide was not one of measured temperatures at all, but rather figures infinitely more important to climate alarmists – those determined by proxy reconstructions. As this scandal has attracted new readers to the subject, I ask climate savvy readers to indulge me while I briefly explain climate proxies, as they are an essential ingredient of this contemptible conspiracy.

Truth be told — even reasonably reliable instrumental readings are a relatively modern convenience, limiting CRU’s global measured temperature database to a start date somewhere in the mid-19th century. That’s why global temperature charts based on actual readings typically use a base year of 1850 or somewhere thereabouts. . .