Arctic warming began sooner than thought, closer to human industrialisation

The video discusses the warming of oceans over decades, with a focus on a study that used marine debris to reconstruct 800 years of data. It highlights the stability of Arctic waters until the early 1900s, when heat and salt from the Atlantic began to rise, possibly due to human-induced carbon dioxide emissions. The study suggests changes in Atlantic Meridional Overturning Circulation currents may have contributed. A feedback loop is described, where melting ice leads to further warming as the dark ocean absorbs more heat.

What has been the trend in ocean temperatures over the past decades?

What significant changes occurred in the Arctic waters around the early 1900s?

According to the study, what role do greenhouse gases play in Arctic sensitivity?

What are the potential causes of the early Atlantification mentioned in the study?

How does the melting of Arctic ice create a feedback loop affecting temperatures?