The Guardian reported that a study published in Environmental Research Letters found that massive human greenhouse gas emissions are thinning Earth's stratosphere. Since the 1980s, the atmosphere has already lost 400 meters of thickness, and if carbon emissions are not significantly reduced, it could shrink by about a kilometer by 2080. This thinning could affect the operation of satellites, GPS navigation systems, and radio communications. A study published in April of this year suggested that the human-caused climate crisis has shifted the orientation of Earth's axis, with the massive melting of glaciers altering the distribution of Earth's weight. The stratosphere lies between 20 and 60 kilometers above the Earth's surface, beneath which lies the troposphere. Humans live in the troposphere, where carbon dioxide warms and expands the air, pushing up the lower boundary of the stratosphere. However, when carbon dioxide enters the stratosphere, it actually cools the air, causing it to contract. Juan A\u00f1el, a researcher at the University of Vigo in Spain and one of the study's authors, said the shrinking stratosphere demonstrates the planetary scale of the human-caused climate crisis. \"It proves we are disrupting an atmosphere up to 60 kilometers thick.\" Scientists have known for a while that the troposphere's height increases with carbon emissions, and they had previously theorized that the stratosphere would thin as a result. This new study is the first to confirm this theory. The study shows that the global stratosphere has been thinning since at least the 1980s, when satellite data were first collected. The ozone layer, which absorbs ultraviolet light from the sun, is located in the stratosphere, and researchers had previously believed that ozone loss in recent decades could be contributing to its shrinkage. Decreased ozone indicates a decrease in heat in the stratosphere. However, the new study shows that the steady thinning of the stratosphere is being driven by increasing carbon dioxide, not ozone. Ozone levels began to rise after the Montreal Protocol banned the use of chlorofluorocarbons in 1989. Researchers say this thinning of the stratosphere could affect satellite trajectories, the lifetime of orbits, and the propagation of radio waves, ultimately impacting the overall performance of the Global Positioning System and other space-based navigation systems. Source: Environmental Information Centre<\/p>","protected":false},"excerpt":{"rendered":"
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