Earth is retaining more heat annually than it was 15 years ago. A team from NOAA and NASA found that the emergency imbalance of Earth doubled between 2005 and 2019. The energy imbalance the difference between the amount of energy the Earth observes and the amount it releases. Any increase in energy imbalance means the overall Earth system is gaining energy, causing it to heat up.
From two separate sources, the team used data to quantify this change: a system run by NOAA called Agro and NASA’s Clouds and the Earth’s Radiant Energy System (CERES). CERES finds out how much energy is entering and leaving Earth. In the form of solar radiation, most of the energy enters the Earth, and while energy going could be in many forms. Agro finds out the rate of temperature increase for the oceans. 90% of the Earth’s energy is observed in the ocean. Any significant energy imbalance would heat the oceans.
Data from both Agro and CERES pointed to the same conclusions that the Earth is absorbing more energy than it was emitting. The ocean stores that energy, and in the recent past, the annual amount of energy stored has increased dramatically. All of these finds have future implications for coping and understanding climate change.
According to the researchers, there are two main reasons for the energy imbalance. 1st was a decrease in sea ice and clouds; a white surface increased the Earth’s albedo. Some of the reductions in the cloud coverage are due to Pacific Decadal Oscillation. A warm phase of this oscillation took hold in the middle of the survey period, which caused a widespread reduction in cloud coverage and thus lower albedo. The 2nd cause was an increase in both greenhouse gases caused by water vapour and human emissions. This prevents specific kinds of radiation from escaping, and the overall energy amount of the system is increased by this.
The polar ice-cap could melt fast because of this heat-trapping, thereby speeding up the rise in sea levels. Many scientists fear that will happen in 100 years. The higher temperature in oceans could make them more acidic, which will impact the ecosystem.