As the UK swelters through its latest bout of scorching temperatures, with southern England experiencing heatwaves 3°C hotter than in previous years, a leading climate scientist has set the record straight on what's behind this escalating trend. Professor Ed Hawkins from the University of Reading is clear: it's not just a matter of adapting to the new normal – our planet is fundamentally changing due to human activity.
Professor Hawkins highlights that while the global average temperature increase might seem modest, at around 1°C, its impact is felt most intensely through extreme weather. The fact that ten of the past decade's warmest years have occurred within the last year alone speaks volumes about a rapidly accelerating warming trend. This is not just about statistics – it's about living with the consequences.
Debunking claims of scientific disagreement, Professor Hawkins stresses that there's no room for doubt among climate experts: human activity, particularly the burning of fossil fuels (gas, oil, and coal), releases greenhouse gases that directly lead to a warmer planet. This fundamental understanding has been established since the 1850s, with the first quantification of carbon dioxide's effect dating back to the 1890s.
The role of natural weather cycles like El Niño is often misunderstood. While these cycles do influence global weather patterns and can exacerbate extreme events, they don't cause the underlying warmer conditions. Professor Hawkins notes that the current El Niño event is only just beginning and won't peak until later this year – it's not solely responsible for record-breaking temperatures.
He also addresses the theory that Earth's orbit moving closer to the sun is behind current warming. While orbital changes affect climate over tens of thousands of years, they were actually pushing Earth towards a cooler path during the 18th-century Industrial Revolution. The rapid warming observed since then is directly linked to increased fossil fuel burning – not astronomical shifts.
Comparing current heatwaves to historical events like the UK's 1976 summer, Professor Hawkins notes that this year's June heatwave was approximately two degrees hotter and shattered records across a much wider area of Europe. This demonstrates a significant change in climate over recent decades, with far-reaching consequences for life on Earth.