The mystery of why the Antarctic Ice surface increased despite global warming has finally been answered. Until now, scientists have been wondering why does ice continue to expand, at the same time as global temperatures are on the rise.
The strange phenomenon has divided the scientific community into two groups. One group disputes the existence of global warming, and the other disputes the accuracy of data.
The debate on climate change began approximately 16 years ago. So far, the positive changes in sea ice at the South Pole have been a source of disagreement. Now, a study conducted by experts from Australia and the US offers an explanation for this paradox of science.
What they found was that the expansion of Antarctic sea ice we’ve seen in recent years was due to natural temperature fluctuations of the sea. The changes counter-balanced the amount of warming caused by greenhouse gasses.
Computer models of the climate showed that rising sea temperatures would normally stop the spread of Antarctic sea ice. Instead, ice from the South Pole seems to extend as far and wide as ever. How can this happen?
262 models investigated revealed that the rising sea temperatures are happening because of global warming came under the influence of a phenomenon known as Interdecadal Pacific Oscillation. (IPO).
IPO occurs when atmospheric pressure cools or warms sea surfaces of the Pacific basin. An IPO cycle can take place every 20 to 30 years. Since the end of 2000, the IPO has gone through a negative phase, where sea surface temperatures went below average. In Antarctica , the sea ice expanded as a result.
The expansion rate increased five times in 2000. Another conclusion of the study was that land, ocean and atmosphere have very complex interactions that we’ve yet to understand fully.
Meanwhile, the North Pole ice has been on a steady decline. The Arctic sea was at its lowest level in 2016, since satellites began monitoring the reason. Could this be Earth’s law of compensation?
Scientists don’t yet know why Antarctic surface ice is on the increase, while at the opposite pole, the quantities of ice are decreasing. Further studies are needed to show whether we should worry about global warming or not.
Image Source –Pixabay