It would release particles into the atmosphere that would rise to form a high-level haze that also might help to block sunlight.

The dust it throws out can block sunlight around the globe, triggering a deep volcanic winter than can last years.

The pollutants and sediments cloud the water and block sunlight from reaching the algae that give the reef coral its vibrant colours.

The deep verandahs help prevent rain from flooding the house, block sunlight and keep the indoor area cool.

Narrow ravines crowded with hemlock block sunlight, creating damp, cooler growing conditions with associated cooler climate plant species.