![]() ![]() When extended back to 1850, we see that temperatures then were a further 0.4℃ colder than they were in our baseline. We see that over the last few decades, global temperatures have risen sharply - to approximately 0.7℃ higher than our 1961-1990 baseline. The red line represents the average annual temperature trend through time, with upper and lower confidence intervals shown in light grey. ![]() In the chart, we see the global average temperature relative to the average of the period between 19. To set the scene, let’s look at how the planet has warmed. 1 This link between global temperatures and greenhouse gas concentrations – especially CO 2 – has been true throughout Earth’s history. Human emissions of carbon dioxide and other greenhouse gases – are a primary driver of climate change – and present one of the world’s most pressing challenges.
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