Humid heatwaves are often limited by the onset of convective rain, such as thunderstorms. Observational reanalysis data and climate models indicate that dry air 1–3 km above the Earth’s surface can curtail convective storms, allowing humid heatwaves to intensify on the ground. This effect is likely to be exacerbated by increasing global temperatures.

中文翻译：

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低层自由对流层中的干燥空气加剧了潮湿的热浪


潮湿的热浪通常会受到对流雨（例如雷暴）的限制。观测再分析数据和气候模型表明，距地球表面 1-3 公里的干燥空气可以减少对流风暴，从而使地面上的潮湿热浪加剧。全球气温升高可能会加剧这种影响。