Causes of the 2003 European Heat Wave

The 2003 heat wave resulted from a combination of factors:

• Atmospheric blocking: A persistent high‑pressure system stalled over Europe, preventing cooler air and rain.
• High solar radiation: Clear skies and natural solar variation increased heating.
• Global warming: Human‑induced climate change made such extremes more likely and severe.
• Urban heat island effect: Cities trapped heat, amplifying temperatures.
• Drought: Dry spring/summer depleted soil moisture, reducing evaporative cooling and fueling fires.

The event caused widespread health, agricultural, and economic impacts, underscoring Europe's vulnerability to extreme weather.