Research from the Princeton University confirms that Earth has lost quite an amount of Oxygen. How it lost is is still not known and the reason is not something to fear for now!
The study says that the O2 levels dropped by 0.7% over more than 8, 00,000 years. The researchers say that the oxygen sinks – the factors that utilise oxygen- have increased two times more than the oxygen producers.
Lead author Daniel Stolper, a geologist at Princeton University says, “Every thousand years or so, all of the O2 [in Earth’s atmosphere] is turned into water and then back into O2, but there’s an ever so slight leak over time, in terms of extra production or consumption”.
Stopler thinks the o2 storage in tanks will not be necessary as the dip is insignificant.
O2 makes up to 20%, 78% accounting to nitrogen and the remaining 2% attributes to the inert gases including carbon dioxide. The composition is measured by drilling the age old ice cores sheets in the region of Antarctica and Greenland and studying the air bubbles trapped that lead back to thousands of years.
The reason for the decline in oxygen levels still stays unknown. Stopler says that the increase in soil erosion in the past few hundreds of years might have acted as a sink for oxygen. The decrease in atmospheric temperature might be cause- oxygen in atmosphere dissolves in higher rates in cooler ocean waters he added.