Ice age thermostat prevented extreme climate cooling
Tuesday, March 14, 2017 - 09:02
in Earth & Climate
During the ice ages, an unidentified regulatory mechanism prevented atmospheric CO2 concentrations from falling below a level that could have led to runaway cooling, reports a study conducted by researchers of the ICTA-UAB and published online in Nature Geoscience this week. The study suggests the mechanism may have involved the biosphere, as plants and plankton struggled to grow under very low CO2 levels.