A variant on this, along “the dog ate my homework” path, also involves the Hadley Centre – which is the primary science provider of global temperature statistics to the IPCC. Faced with requests from outside scientists for the provision of the raw temperature data so that scientific audit checks could be undertaken, Hadley’s Phil Jones recently asserted that parts of the raw data used to reconstruct their global temperature curve for the period before about 1980 cannot be provided to outsiders because it has been lost or destroyed. In other words, it is now impossible to conduct an independent audit of the Hadley temperature curve for 1860-2008, on which the IPCC has based an important part of its alarmist global warming advice.