“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.”
“Most of the observed increase in globally averaged temperatures since the mid-20th
century is very likely due to the observed increase in anthropogenic greenhouse gas
concentrations. Discernible human influences now extend to other aspects of climate,
including ocean warming, continental-average temperatures, temperature extremes
and wind patterns.”
“Anthropogenic warming and sea level rise would continue for centuries due to the
timescales associated with climate processes and feedbacks, even if greenhouse gas
concentrations were to be stabilized.”