According to a recent study, the Earth is storing nearly twice as much heat as it did in 2005, an "unprecedented" rise in the midst of the climate crisis.

California's Drought Continues To Worsen
NICASIO, CALIFORNIA - MAY 28: Dry cracked earth is visible as water levels are low at Nicasio Reservoir on May 28, 2021 in Nicasio, California. Marin County is under mandatory water-use restrictions that orders residents to refrain from washing cars at home, refilling pools and watering lawns once a week. According to the U.S. Drought Monitor, 16% of California is in exceptional drought, the most severe level of dryness. Photo by Justin Sullivan/Getty Images
(Photo : Photo by Justin Sullivan/Getty Images)

In recent research, scientists from Nasa, the US space agency, and the National Oceanic and Atmospheric Administration (NOAA) found that the Earth's "energy imbalance" nearly quadrupled between 2005 and 2019. The rise has been dubbed "alarming."

The discrepancy between how much of the Sun's "radiative energy" is absorbed by Earth's atmosphere and surface against how much "thermal infrared radiation" bounces back into space is referred to as "energy imbalance."

Energy Imbalance

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SYDNEY, AUSTRALIA - JANUARY 24: A person walks their dog through a dry Sydney Park on January 24, 2021 in Sydney, Australia. The Bureau of Meteorology has forecast severe heatwave conditions for most of NSW with temperatures expected to top 40 degrees Celsius in Sydney's Western Suburbs over the weekend. Photo by Mark Kolbe/Getty Images
(Photo : Photo by Mark Kolbe/Getty Images)

In a statement announcing the findings, Nasa noted, "A positive energy imbalance implies the Earth system is accumulating energy, causing the globe to heat up."

By comparing data from satellite sensors - which measure how much energy enters and departs Earth's system - with data from ocean floats, scientists concluded that there was an energy imbalance.

This global network of data-gathering floats allows researchers to get an "accurate assessment of the rate at which the world's seas are warming."

Because about 90% of surplus energy from an imbalance ends up in the ocean, the data from satellite sensors should correspond to changes in ocean temperature.

"The two very independent ways of looking at changes in Earth's energy imbalance are in really, really good agreement, and they're both showing this huge trend, which gives us a lot of confidence that what we're seeing is a real phenomenon and not just an instrumental artifact," said Nasa researcher Norman Loeb.

"In some ways, the tendencies we discovered were pretty alarming."

Trapping Heat

Warming of the Global Ocean between 1984 and 2009 (IMAGE)
Warming of the global ocean between 1984 and 2009, as seen on the zonally averaged section of the temperature difference between the WAGHC and WOA13 global ocean climatologies. Viktor Gouretski

Increases in greenhouse gas emissions trap heat in the Earth's atmosphere, preventing it from escaping into space. Other changes are triggered by the warming, such as ice and snow melt. According to Nasa, a rise in water vapor and changes in cloud cover might worsen the warming.

According to the research, this doubling is attributed to an increase in greenhouse gases and water vapor, as well as declines in clouds and ice.

Global Warming

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NEW YORK - JULY 10: A man wipes sweat from his face July 10, 2007 in New York City. New York City is experiencing a second day of a heat wave with temperatures in the upper 90`s and uncomfortable humidity levels. Photo by Spencer Platt/Getty Images
(Photo : Photo by Spencer Platt/Getty Images)

A "naturally occurring" transition in the Pacific Ocean from a cold to a warm phase, according to the researchers, likely had a substantial influence in exacerbating this energy imbalance.

"It's probably a combination of human forcing and internal variability," Loeb says. "And they're both generating warming throughout this time span, which results in a significant change in Earth's energy imbalance. The scale of the growth is unheard of."

However, according to Loeb, this research merely gives a glimpse into long-term climate change, and "it's not feasible to anticipate with any confidence what the balance of Earth's energy budget could look like in the coming decades," as Nasa puts it.

The study concluded that unless the pace of heat intake lowers, larger climatic alterations are likely.

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