[aruanan]

Scientists discover global warming linked to increase in tropopause height over past two decades

Except that most of the 1C increase during the 20th century took place over 50 years ago, 30 years earlier than the past two decades of change in tropopause height.

[cogitator]

Except that most of the 1C increase during the 20th century took place over 50 years ago,

It was 0.6 C over the whole 20th Century. In the past 25 years or so, global temperatures have increased about 0.4 C, (or 1.8 C century). Those two observations aren't in conflict because there was a slight drop in global temperatures from the 1940s to the 1970s.