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American Focus > Blog > Tech and Science > Penguin poo helps keep Antarctica cool
Tech and Science

Penguin poo helps keep Antarctica cool

Last updated: May 23, 2025 1:35 am
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Penguin poo helps keep Antarctica cool
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Adelie Penguins

Adelie penguins on sea ice off the Antarctic Peninsula

Ashley Cooper pics/Alamy

A fascinating connection has been discovered between Antarctica’s penguin colonies and the atmosphere above them. The fumes of ammonia rising from the piles of penguin droppings in these crowded colonies play a significant role in boosting cloud formation. This process, in turn, has a cooling effect by reflecting sunlight away from the surface, ultimately impacting the climate in the region.

Matthew Boyer, a researcher at the University of Helsinki in Finland, highlights the intricate link between the ecosystem and atmospheric processes brought to light by this discovery. The presence of ammonia in the air above penguin colonies enhances the formation of particles necessary for cloud formation. In Antarctica’s pristine environment, where particles for cloud formation are scarce, the ammonia from penguin droppings becomes a crucial factor.

Boyer and his team conducted measurements downwind of a large Adélie penguin colony on the Antarctic Peninsula, observing a significant rise in ammonia concentrations when the wind blew from the direction of the colony. This increase in ammonia levels facilitated the formation of sulphuric acid particles, essential for cloud formation. The impact of penguin colonies on cloud cover persisted even after the penguins had left the area.

The increased cloud cover, particularly over the ocean, contributes to cooling the Earth’s surface by reflecting sunlight. However, a decline in penguin populations, possibly due to climate change-induced sea ice loss, could lead to reduced cloud cover and consequently have a warming effect on Antarctica. While the exact magnitude of this effect is yet to be determined, previous studies in the Arctic have shown a similar phenomenon with ammonia from bird excretions.

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Jeffrey Pierce from Colorado State University has demonstrated that ammonia from puffin excretions in the Arctic boosted cloud cover during summer, offsetting a significant portion of the warming caused by carbon dioxide. This emphasizes the importance of understanding the intricate interactions between wildlife, their habitats, and the atmosphere in shaping our planet’s climate.

Topics:

  • Antarctica/
  • animal behaviour

TAGGED:AntarcticaCoolhelpsPenguinPoo
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