Dr Rajendra Pachauri has been chairman of the IPCC since 2002 and was elected for a second six-year term in 2008, but the report suggested a chairman should not remain in the role for more than the period taken to produce one climate science assessment.

BBC: IPCC chairman 'should be replaced'

Dr Rajendra K Pachauri is the chairman of the UN's Intergovernmental Panel on Climate Change.

BBC: Edinburgh, Fife & East Scotland

When open criticism began last year, it was airily dismissed by Rajendra Pachauri, who chairs the IPCC and runs an institute in India where Dr Hasnain now works on glaciology.

ECONOMIST: Glaciers and the IPCC