since the mid 1970s, global temperatures have been warming at around 0.2 degrees celsius per decade.
since the mid 1970s, global temperatures have been warming at around 0.2 degrees celsius per decade.
instrumental temperature record:13
for 1979 to 2012, the linear warming trend for combined land and sea temperatures has been 0.155 °c (0.122 to 0.188 °c) per decade, according to ar5.