Since the end of the 19th century, the earth's average surface temperature has increased by 0.3-0.6 Â°C. Over the last 40 years, the rise has been 0.2-0.3 Â°C.
Global sea level rose by about 17 centimetres (6.7 inches) in the last century. In the last decade, however, the rate of rise has nearly doubled.
The Greenland and Antarctic ice sheets have shrunk in both area as well as mass.
Mountain glaciers and snow cover have declined on average in both hemispheres, and may disappear altogether in certain regions of our planet, such as the Himalayas, by 2030.
What do the above facts indicate?
Yes! The climate is changing.
Climate change refers to a statistically significant variation in either the mean state of the climate or in its variability, persisting for an extended period (decades or longer).