Rocky Rex's Science Stuff
Tuesday, 8 March 2016
Climate Change - Heading for 2 degrees rise in global temperatures
The highly respected
project has reported that
2015 was the warmest year in the modern record,
by a significant margin.
This chart shows the
annual average global temperatures
up to 2015, from NASA's
Goddard Institute for Space Studies (
One thing to note ….. every
‘year’ since 1998 was warmer than every
‘year’ before 1995.
It's useful to look at average global temperatures by comparing decades.
This chart comes from the
World Meteorological Organisation.
The high figures in the 1930s and 1940s were produced partly because there were strong El Ninos over a period from about 1939 to 1942.
Since the mid 20th century global temperatures have risen, decade by decade.
published June 2015 confirms this trend:
Over a longer term, it's obvious that the current situation is unusual.
Source: Sir John Houghton
A temperature rise of
above pre-industrial temperature has been agreed as a threshold
beyond which climate change risks become unacceptably high.
However, there are
even to the "two-degree limit"
Many say the number is simply too high.
Archbishop Desmond Tutu has pointed out that a two-degree global average rise might result in Africa’s temperature rising as much as 3.5 degrees C —a potentially disastrous change.
The current rise in temperature has reversed all the natural trends.
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