The Smell of Rain: How Ozone and Petrichor Signal an Approaching Storm
Have you ever stepped outside just before a thunderstorm and noticed a distinct, sharp scent in the air? Or breathed in that earthy, nostalgic aroma after the first rainfall in weeks? These scents, often overlooked, are nature’s way of signaling impending weather changes.
These two well-known atmospheric phenomena—ozone and petrichor—play a crucial role in how we perceive storms before they arrive. While most people rely on dark clouds and thunder to predict rain, the human nose is far more sensitive than we realize. By detecting these natural chemical reactions in the air, our sense of smell allows us to anticipate storms long before the first raindrop falls.
But what exactly are we smelling? And how do these invisible processes work?
Let’s explore the fascinating science behind ...
