Science Source

Detection of changes in temperature extremes during the second half of the 20th century

Demonstrates the early detection of a significant anthropogenic influence in temperature extremes with the exception of changes in warm days
States that since 1950, the warmest and coldest days and nights of the year have become warmer
Compares these observations with climate model simulations
Shows a significant human influence on patterns of change in extremely warm nights
Detects human influence on cold nights and days, although less robustly, but there is no detection of a significant human influence on extremely warm days
Concludes that in the future, extreme temperatures are expected to intensify considerably, with adverse consequences for human health