What are the key knowledge gaps that need to be addressed to inform climate action?

Dec 7, 2023 ... Today atmospheric carbon dioxide is at its highest level in at least several million years thanks to widespread combustion of fossil fuels ... By weight, dried tree material is about 50 percent carbon. Trees also release carbon dioxide to the atmosphere as a function of their physiology. When some ... Sep 20, 2019 ... Carbon sequestration is the process of capturing, securing and storing carbon dioxide from the atmosphere ... Oceans absorb roughly 25 percent of ... Feb 6, 2019 ... ... percent of global CO2 emissions since the end of the preindustrial era. In the last decade (from 2008-2017), we've dumped into the atmosphere ... What is carbon dioxide? Carbon dioxide (CO2) is a colorless, odorless, non-flammable gas that naturally occurs in the atmosphere. CO2 is produced by body ... Dec 16, 2010 ... ... percent of the total carbon released to the atmosphere in any given year. To understand why anthropogenic emissions are of concern, it is ... Jul 14, 2021 ... It found fires produced about 1.5bn tonnes of CO2 a year, with forest growth removing 0.5bn tonnes. The 1bn tonnes left in the atmosphere is ... Sep 17, 2023 ... A significant amount of carbon dioxide is exchanged between the atmosphere and oceans every year, but the fast carbon cycle's most important ... The ocean generates 50 percent of the oxygen we need, absorbs 25 percent of all carbon dioxide emissions and captures 90 percent of the excess heat generated ... Jan 25, 2018 ... In fact, carbon dioxide, which is blamed for climate warming, has only a volume share of 0.04 percent in the atmosphere. And of these 0.04 ...