Which regions face the strongest wetting and drying trends?

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South and South-east Asia face the strongest wetting trends, while Europe, the Middle East, and North Africa are becoming drier.

A study analysing 42 years of weather data from over 100 populous cities indicates a significant divergence in climate trends across global regions. South and South-east Asia are experiencing the most pronounced increases in rainfall, whereas Europe, the Middle East, and North Africa are becoming progressively drier. This phenomenon is contributing to a "climate whiplash" effect in many urban areas, characterized by a rapid succession of extreme weather events.
South and South-east Asia Show Strongest Wetting Trends

Researchers identified South and South-east Asia as the regions exhibiting the most substantial wetting trends based on the analysed weather data. This finding suggests a significant increase in precipitation and associated flood risks in these densely populated areas. The study draws on data spanning four decades, providing a long-term perspective on these climatic shifts.
Europe, Middle East, and North Africa Exhibit Drying Trends

Conversely, the study highlights that Europe, the Middle East, and North Africa are experiencing a consistent trend towards drier conditions. This drying trend implies a potential increase in drought frequency and severity in these regions, impacting water availability. The findings are derived from a comprehensive analysis of weather patterns in over 100 of the world's most populous cities.
Climate Whiplash Affects Densely Populated Cities

The rapid succession of prolonged floods and droughts, termed "climate whiplash," is particularly affecting densely populated cities. For instance, China's eastern city of Hangzhou and Indonesia's capital, Jakarta, were identified as topping the list of cities experiencing this phenomenon. As much as 15 per cent of the cities surveyed, including Dallas, Shanghai, and Baghdad, face simultaneously rising risks of both extreme floods and droughts.
Infrastructure Adaptation Needed for Shifting Climate Extremes

Many cities that previously invested in infrastructure to manage either water scarcity or flood damage are now confronting entirely different climatic circumstances. This necessitates significant new investments to adapt to these evolving environmental conditions. The study underscores that responses to atmospheric warming can vary significantly by location, irrespective of a city's wealth or infrastructure development.

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Which regions face the strongest wetting and drying trends?

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