Ten years ago, the University of Michigan said that thirty years of declining snow cover was making global warming worse than they predicted.
“If the Earth were just a static rock, we could calculate precisely what the level of warming would be, given a perturbation to the system. But because of these feedback mechanisms we don’t know exactly how the climate will respond to increases in atmospheric carbon dioxide,” Flanner said.
“Our analysis of snow and sea ice changes over the last 30 years indicates that this cryospheric feedback is almost twice as strong as what models have simulated. The implication is that Earth’s climate may be more sensitive to increases in atmospheric carbon dioxide and other perturbations than models predict.”
Over the past thirty years, Northern Hemisphere snow cover has trended upwards about 500,000 square kilometers.
Also over the past 30 years, there have been dozens of international climate agreements, including the most recent one to lock everybody up in their homes. None of them have had any impact on the rate of CO2 growth in the atmosphere.
US CO2 emissions have been declining for almost twenty years and only comprise about 10% of global emissions, yet experts told us that survival of the planet depended on the US electing Joe Biden and re-entering the Paris accord.