قالب وردپرس درنا توس
Home / Science / Scientists found that Antarctica is warming three times faster than the rest of the earth

Scientists found that Antarctica is warming three times faster than the rest of the earth



On Monday, a new study showed that due to the increase in temperature in the tropical ocean, the Antarctic has warmed three times faster than the rest of the earth in the past 30 years.

The temperature in Antarctica varies greatly depending on the season and the region, and it has been believed for many years that even if the continent warms, Antarctica will remain cool.

Researchers in New Zealand, the United Kingdom and the United States analyzed 60 years of weather station data and used computer models to show the causes of accelerated warming.

They found that for decades, the increase in ocean temperature in the Western Pacific has reduced the atmospheric pressure above the Weddell Sea in the South Atlantic.

This, in turn, has increased the flow of warm air flowing directly over Antarctica-since 1

989, its temperature has risen by more than 1.83C (about 3.3F).

The authors of the study say that anthropogenic greenhouse gas emissions may exacerbate the trend of natural warming and may mask the thermal effects of Antarctic carbon pollution.

Kyle Clem, a researcher and lead author at Victoria University of Wellington, said: “Although it is known that the temperature in the entire western Antarctic and the Antarctic Peninsula increased in the 20th century, the Antarctic is cool down.”

He told AFP: “People suspect that this part of Antarctica may not be affected by warming. We found that this is no longer the case.”

The data shows that Antarctica-the most distant place on earth-has been warming at a rate of about 0.6C (1.1F) for ten years, while the rest is heating at a rate of 0.2C (0.4F).

The author of the study published on Nature climate change The journal attributed this change to a phenomenon known as the Interdecadal Pacific Oscillation (IPO).

The IPO cycle lasts approximately 15 to 30 years, and alternates between a “positive” state (the tropical Pacific is hotter and the North Pacific is lower than the average temperature) and a “negative” state (the temperature is abnormally opposite).

At the beginning of this century, the initial public offering (IPO) turned into a negative cycle, which brought greater convection and extreme pressure in high latitudes, resulting in a lot of warm air circulation directly above Antarctica.

Clem said that in all the simulated 30-year warming trends, the warming level of 1.83C (3.3F) exceeded 99.99%.

He said: “Although climate warming is only within the natural variability of climate models, it is likely caused by human activities.”

© AFP


Source link