About half of the decrease in British greenhouse gas emissions, down 8.4 percent year-on-year, was because of warmer weather, the government said Tuesday.

The British government said total greenhouse emissions for 2014 were down 8.4 percent when compared with 2013.

"Around half of this decrease is due to temperature differences between 2013 and 2014," the government said Tuesday.

The British Department of Energy and Climate Change said the mean temperature in 2014 was more than 2 degrees Fahrenheit higher than the long-term average.

Data adjusted for temperature variance show a general decrease in emissions. When adjusted for temperature, DECC said fourth quarter emissions were down 16 percent compared with data from 2009.

The department said much of the variance in long-term emissions is because of changing energy use in response to external temperatures.

DECC added further emission reductions game as a result of less coal use for electricity generation and the subsequent increase in renewable resources.

Data from March show natural gas accounted for 30 percent of the electricity generated in the country last year, a 3 percent increase year-on-year. Coal accounted for 29 percent, which marked a 7 percent decrease from 2013.

Renewable energy use, meanwhile, increased to 19.4 percent last year, a record.

A report last year from the Intergovernmental Panel on Climate Change found emissions of carbon dioxide, a potent greenhouse gas, from the combustion of fossil fuels accounted for 78 percent of the total emissions increase from 1970 to 2010.

The IPCC report said warming trends could slow under a scenario in which renewable energy grows from roughly 30 percent of the energy share to 80 percent by 2050.