References from main page

References and quotes that were used as base information in What's Your Impact's main page:

¹ "Warming of the climate system is unequivocal, as is now evident from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice, and rising global average sea level." United Nations Intergovernmental Panel on Climate Change. Fourth Assessment Report.

² "human influences now extend to other aspects of climate, including ocean warming, continental-average temperatures, temperature extremes and wind patterns." United Nations Intergovernmental Panel on Climate Change. Fourth Assessment Report.

³ "At continental, regional and ocean basin scales, numerous long-term changes in climate have been observed. These include changes in arctic temperatures and ice, widespread changes in precipitation amounts, ocean salinity, wind patterns and aspects of extreme weather including droughts, heavy precipitation, heat waves and the intensity of tropical cyclones." United Nations Intergovernmental Panel on Climate Change. Fourth Assessment Report.

⁴ "Most of the observed increase in global average temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations." United Nations Intergovernmental Panel on Climate Change. Fourth Assessment Report.

⁵ "The observed widespread warming of the atmosphere and ocean, together with ice mass loss, support the conclusion that it is extremely unlikely that global climate change of the past 50 years can be explained without external forcing, and very likely that it is not due to known natural causes alone." United Nations Intergovernmental Panel on Climate Change. Fourth Assessment Report.