The theme here is that aerosols have to some extent been having the opposite of the alleged effect of so-called greenhouse gases. This study, based on climate modelling, suggests at least some recent warming is linked to reductions in atmospheric aerosol content.
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A new NOAA study covering four decades of tropical cyclones found that reducing particulate air pollution in Europe and North America has contributed to an increase in the number of tropical cyclones in the North Atlantic basin and a decrease in the number of these storms in the Southern Hemisphere, says Green Car Congress.

The open-access study, published in Science Advances, also found that the growth of particulate pollution in Asia has contributed to fewer tropical cyclones in the western North Pacific basin.

While a number of recent studies have examined how increasing greenhouse gas emissions are impacting global tropical cyclone activity, Hiroyuki Murakami…