“The science is clear,” says the head of the World Meteorological Organization. “The window of opportunity for action is almost closed.”
As communities most impacted by the climate crisis ramp up demands for urgent global action, atmospheric concentrations of the top three greenhouse gases driving global warming have hit record high levels, according to the World Meteorological Organization (WMO) out Thursday.”
Last year, as the latest WMO Greenhouse Gas Bulletin (pdf) details, average concentrations of carbon dioxide, methane, and nitrous oxide all rose—with CO2 hitting 405.5 parts per million (ppm), its highest level in a few million years.
The report also noted that there was a “resurgence of a potent greenhouse gas and ozone-depleting substance”—called trichlorofluoromethane, or CFC-11—likely tied to “increased emissions associated with production of CFC-11 in eastern Asia.” Continue reading