There have been numerous studies released which show that Arctic temperatures have been at their highest levels in 44,000 years, but it is now believed they could even be as high as they were 120,000 years ago. Because of this, the Arctic’s ice caps are melting extremely fast, but how does this relate now to what has happened in the past? How dangerous is this going to prove to be to the earth in the present day?
The newest research is showing that the average summer temperatures in the Arctic over the last century could even be the highest in over the 120,000 years, quite possibly putting the 44,000 number out to pasture after many more tests are done.
The main piece here is just how unparalleled the warming of the Arctic is, explained Gifford Miller, who is a scientist at the University of Colorado, at Boulder, in a statement from the college. The climate information is being published in the journal Geophysical Researcher Letters. It says, in the study by Miller and his colleagues, that the warming the Earth is experiencing is beyond any known kind of normal warming in the natural world. This has increased due to the larger amounts of greenhouse gases which are in our atmosphere now.
This research project is the first one that shows the present Arctic warmth surpasses the top heat there which occurred in what is known as the early Holocene period. This is the name for the present geographical period, which started around 11,000 years ago. Throughout this high warmth in the Arctic, solar radiation was approximately 9 percent higher than what it is in today’s world, states the report. Miller and his associates evaluated various Arctic temperatures by looking at different types of gas bubbles that had gotten stuck in ice cores. These are chambers penetrated from the ice which show snow layers which have packed down over periods of time. They were removed from the area, which lets researches be able to reconstruct earlier temperature and precipitation levels. The research group combined this with radiocarbon dating of batches of moss that had been taken from an ice cap that is melting which is located on Baffin Island in northern Canada.
Their examination showed that the plants were caught in the ice for over 44,000 years and more likely up to as far back as 120,000 years ago. When put together, the various pieces of information seemed to say that temperatures in the area had not been as high for maybe as long as 120,000 years in the past, the study read. The Arctic is believed to have been warming up for just over a century, but the most noteworthy heating period did not begin until the 1970s, Miller added in his statement.
It is really in these past 20 years or so that the warming indication from that region of the world has been totally shocking, he exclaimed. It is a proven fact that all of Baffin Island in Canada is now experiencing melting of some kind. It is definitely expected that every single one of the polar ice caps will ultimately vanish, even if there was not any additional warming after this time.
With the Arctic temperatures being at their highest levels in 44,000 years, and even possibly 120,000 years, one has to wonder what, if anything, can be done to stop such climate change from getting worse.
Written by: Kimberly Ruble
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