No matter what the weather app predicts, forecasting the weather often feels like a shot in the dark.
Some people say they can smell the rain coming, although not everyone on social media buys into this idea.
But naturally, those who can’t detect the scent are skeptical.
Enter the realm of science to clear things up!
This ability is largely thanks to a phenomenon known as petrichor.
The term ‘petrichor’ comes from Greek roots: ‘petros’ means stone (think petrify), and ‘ichor,’ which in mythology, is what flowed through the veins of the Greek gods.
It turns out, this distinctive smell is produced by a type of soil bacteria that releases a compound called ‘geosmin.’
This specific scent becomes most noticeable after rain has fallen, as the raindrops hit the ground and create puddles.
These puddles can trap pockets of air.
But there’s more to it than just Petrichor.
Another chemical, ‘ozone,’ also plays a role in the smell before rain.
As a storm approaches, winds push pockets of ozone gas down to our level, right where we can smell them.
So next time the clouds gather, try taking a deep breath.
You might be able to sniff out an approaching storm and avoid getting drenched on your way to the store.
