New study raises warming level that earth faces

New study raises warming level that earth faces

A journal Nature-published research paper has stunned climate scientists by unveiling that amount of carbon humans have put into atmosphere has already led earth to be commited three to seven degrees of global warming. The study is a reconstruction of earth’s average surface temperature over the past two million years.

Study researcher Carolyn Snyder from Stanford University has come up with this conclusion after gathering and evaluation of 61 different sea surface temperature records. Snyder has also put in use her new dataset to estimate the sensitivity of earth’s surface temperature to levels of carbon dioxide in the atmosphere.

In the next level, Snyder carried out a comparative analysis with a record of atmospheric carbon dioxide over the last two million years. After the assessment, the researchers have found a strong, positive linear relationship between the two.

“This research follows previous work in the literature that defined the correlation relationship between global temperature and greenhouse gas radiative forcing changes as ESS or S[ghg] as a way to summarize patterns in the Earth’s past climate”, affirmed Snyder.

As per Snyder, the results suggest that even if stabilization takes place at today’s greenhouse gas levels, it is of not much benefit as already it results into total warming of 5 degrees Celsius. Snyder said that the research does not make any prediction for future climate change.

She said that earth is getting warmer and human carbon emissions have to be blamed for the same. The research has received mixed response, as some did not believe in the findings and others terming it to be provocative yet interesting. Researchers said that more research is needed to confirm the findings as scientists have different reasons for rise in temperature.

According to a report in Gizmodo by Maddie Stone, "The internet is abuzz with a new climate study that seemed to deliver a bombshell conclusion: the amount of carbon humans have put into the atmosphere may have already committed the planet 3 to 7 degrees Celsius (5.4 to 12.6 degrees Fahrenheit) of global warming."

Here’s the good news: prominent experts are calling this a load of malarkey. “This is simply wrong,” Gavin Schmidt, director of NASA’s Goddard Institute for Space Studies, told Gizmodo. “The actual committed warming is only 0.5 to perhaps 1 [degree Celsius]—and nothing in the study changes that.”

“This research follows previous work in the literature that defined the correlation relationship between global temperature and greenhouse gas radiative forcing changes as ESS or S[ghg] as a way to summarize patterns in the Earth’s past climate,” Snyder told Gizmodo.

A report published in Washington Post informed, "Temperatures averaged out over the most recent 5,000 years — which includes the last 125 years or so of industrial emissions of heat-trapping gases — are generally warmer than they have been since about 120,000 years ago or so, Snyder found."

Four outside scientists praised the study’s tracking of past temperatures, with caveats about how less certain it is as it gets deeper in the past. Jeremy Shakun of Boston College said “Snyder’s work is a great contribution and future work should build on it.”

A fifth scientist, Michael Mann of Pennsylvania State University, called the study provocative and interesting but said he remains skeptical until more research confirms it. He found the future temperature calculations “so much higher than prevailing estimates that one has to consider it somewhat of an outlier.”


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