what is fahrenheit temperature increase
(Click on bullets above to step through the decades.) According to an ongoing temperature analysis conducted by scientists at NASAâs Goddard Institute for Space Studies (GISS), the average global temperature on Earth has increased by about 0.8Â° Celsius (1.4Â° Fahrenheit) since 1880. Two-thirds of the warming has occurred since 1975, at a rate of roughly 0.15-0.20Â°C per decade.