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High in the clouds, atmospheric aerosols, including anthropogenic air pollutants, increase updraft speeds in storm clouds by making the surrounding air more humid, a new study finds. The results offer a new mechanism explaining the widely observed - but poorly understood - atmospheric phenomenon and provide a physical basis for predicting increasing thunderstorm intensity, particularly in the high-aerosol regions of the tropics. Observations worldwide have highlighted aerosols impact on weather, including their ability to strengthen convection in deep convective clouds, like those that form during thunderstorms, resulting in larger and more severe storms. Previous studies have suggested two mechanisms by which aerosol concentrations could affect the intensity of convection - both involving the release of latent heat into the atmosphere as moisture within clouds condenses (the warm-phase ) or freezes ( cold-phase ) to airborne particles. However, the link between aer ....

Timothy Cronin , Tristan Abbot , Atmospheric Modeling , தீமோத்தேயு குரோனின் , டிரிஸ்தான் திருமட முதல்வர் , வளிமண்டலம் மாடலிங் ,