The history of climate change started centuries ago, long before humans began measuring its effects.
The first signs appeared during the Industrial Revolution, and the changes made themselves present in the Arctic and the tropical oceans.
The researchers from Australia analyzed data coming from corals, tree rings, and ice cores and reached as far back as 500 years. It seems that global warming did not start in our century, but almost 180 years ago.
The monitoring of the Earth’s climate modification began in the 1880s. However, the scientists seemed to have missed the beginning of the warming trend.
The findings of the historical study were that the temperatures started to rise in the waters of tropical oceans and the air of the northern hemisphere ever since 1830. The moment also marked the date when the greenhouse gas emissions started to go up.
The researchers believed that the climate was warming after a period of cooling, and the primary factor in these changes was the particles coming from volcanic eruptions. However, climate simulations showed that the global warming could be explained only by the increase in greenhouse gas emissions.
While the 19th century did not bring a huge change the amount of greenhouse gasses, the environment responded.
The first modifications appeared in the northern hemisphere, whereas in the Australia, Asia, and South America they emerged only 50 years later. At that time, no sign of warming showed up in Antarctica. The explanation was that the currents in the oceans did not carry the warm waters up north.
The study involved the work of 25 scientists from Asia, Europe, Australia, and the US. The merit of the research is that it fills up the gaps left by the years when the scientific advance did not make it possible to track the climate changes.
The industrialization created only a small rise in greenhouse emissions. However, the environment responded very quickly to the modification. The researchers see in these responses a good news, as they think that the Earth may change its climate again if the generating conditions are modified.
The researchers studied the major volcanic eruptions and followed their impact on the climate. The conclusion was that the natural events played only a minor role in the environmental changes.
The global warming eventually arrived in the Antarctic, and the scientists believe that the ocean circulation might have led the hot waters away from the continent.
The study related to the history of climate change was released with additional videos, images, and a FAQ.
Image Source: Wikipedia
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