Environment and Climate Change Minister Paul Wheelhouse set out the reasons Scottish greenhouse gas emissions exceeded the level required by the annual target in 2010, set under the Climate Change Act.
Mr Wheelhouse announced the first Scottish Greenhouse Gas Emissions Annual Target Report for the year 2010 had been published during a ministerial statement on 23 October 2012.
The Net Scottish Emissions account for 2010 was calculated as 54.7 Mega Tonnes (Mt) of carbon dioxide equivalent.
As the Scottish target for 2010 is 53.6Mt, this means the target was missed by 1.1 mega tonnes.
Mr Wheelhouse said the "two exceptional cold snaps" in 2010 were a major factor in this but not the only one and the report detailed the other reasons behind the failure.
The minister added "I am confident that we remain on track to deliver the 42% target by 2020 and our long term target of 80% reductions by 2050."