Earth

Earth brightness is fading, climate change is responsible.

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Climate change is bringing many changes to the Earth. One of these is the reduction of its brightness. A study has found that the brightness of the Earth has decreased compared to earlier. And now our Earth is reflecting less light by half a watt per square meter than it was twenty years ago.

This means that such an amount of light energy stays on the Earth itself. It is causing a further increase in global warming. In this study, it has been told that this is happening due to the warming water of the oceans.

This research, done on decades of data of Earth’s brightness, has been published in Geophysical Research Letters. This glow is the light reflected from the Earth that is visible on the surface of the Moon. The researchers also analyzed satellite measurements and found that the Earth’s reflectance has declined significantly over the past two decades. The researchers found that the brightness of the Earth 20 years ago has now dropped by half a watt per square meter. But most of this decline has come in the last three years.

Researchers say that the decline in the Earth’s reflectance is 0.5 percent. At the same time, the Earth reflects 30 percent of the light coming from the Sun as the same brightness. The study’s lead author and New Jersey Institute of Technology researcher Philip Goode said that this drop in albedo surprised the scientists when they studied the brightness of the past three years. It was consistent over the 17 years before that. It looked flat.

Researchers collected data from 1998 to 2017 of Earth’s brightness from the Big Bear Solar Observatory in southern California and studied it. When he added the latest data, he found that the trend of dimming became apparent. Researchers say that the actual light reaching the Earth is affected by the Sun’s own brightness and the reflection of another planet.

Data from satellite measurements carried out by NASA’s Clouds and the Earth’s Radiant Energy System (CERES) project have revealed a decrease in reflective low-lying clouds over the eastern Pacific Ocean in recent years. Is. This is the same area where an increase in the temperature of the sea surface has been recorded. Researchers say that due to such global climate change, there has been a complete change in the climatic conditions in this area. The dimming of the Earth’s brightness can also be seen from how much solar energy is absorbed by the Earth’s climate system.

The fading of the Earth’s brightness can also be seen from how much solar energy of the Earth’s climate system absorbs. The researchers explained that once this extrasolar energy reaches the Earth’s atmosphere and oceans, it starts contributing to global warming. This is because the amount of additional sunlight is the same as that of the total anthropogenic climate forces or anthropogenic factors over the past two decades.

Planetary scientist Edward Schwieterman of the University of California, Riverside, who was not involved in the study, calls it a matter of concern. According to the India Today report, he told that many scientists were expecting that the warmer Earth will have more clouds. Due to which the brightness of the Earth will be higher. Due to this the global warming will be somewhat less and The climate system will be balanced. But the opposite is happening.