"the keeling curve, which is widely used to show the increase in co2 emissions, is based on data from the top of mount mauna loa in hawaii.
"the keeling curve, which is widely used to show the increase in co2 emissions, is based on data from the top of mount mauna loa in hawaii.
keeling curve:17
carbon dioxide measurements at the mauna loa observatory in hawaii are made with a type of infrared spectrophotometer, now known as a nondispersive infrared sensor, that is calibrated using world meteorological organization standards.