How did the 2003 heatwave start?

The 2003 heatwave in Europe began in late July, driven by a high-pressure system that settled over the region, leading to prolonged sunny and dry conditions. This atmospheric pattern trapped warm air and resulted in record-breaking temperatures across many countries. The heatwave was exacerbated by climate change, which contributed to the intensity and duration of the extreme heat. The event had significant impacts on health, agriculture, and energy consumption, highlighting vulnerabilities in infrastructure and public health systems.