ESS200A
Prof. Jin-Yi Yu
Global Surface Temperature
The global average surface temperature has increased over the 20th century by about 0.6°C.
1910
1945
1976
2000
most of the warming happened
the warmest year is 1998
+0.17ºC/decade
+0.14ºC/decade
Warmest years
(1) 1998 – 0.63ºC
(2) 2005 – 0.58ºC
(3) 2002 – 0.56ºC
      2003
(4) 2004 – 0.54ºC
(5) 2001 – 0.51ºC