"It could be that we're underestimating the effects [of carbon dioxide] somehow. It could be because there were some physics that we're missing in the region of the atmosphere below the thermosphere, which quickly affects the thermosphere," he said.
The researchers say they will continue to monitor the upper atmosphere, which is already rebounding.
"So we're probably going to work in the next couple of years to try and unravel this," Emmert said.
Earth has limits. A near collapse of an atmospheric layer is not a minor issue. No one listens.
