Scientists have identified the gas that causes ozone depletion

Scientists from the University of York and Leeds made a discovery about the cause of ozone depletion over the oceans. It was found that most of the ozone-destroying iodine oxide comes from previously unexplored marine source. Scientists have found that this source can be explained by the gaseous emissions gipoiodnoy acid (HOI) and molecular iodine (I2).

Beginning in the 1970s, when it was opened methyl iodide (CH3I) as a substance, ubiquitous in the ocean, the presence of iodine in the atmosphere can be explained mainly emissions of organic components of phytoplankton — microscopic marine plants.

A new study published in the edition of Nature Geoscience, is based on an earlier study, which showed that the reactive iodine along with bromine in the atmosphere are responsible for the destruction of large amounts of ozone — around 50% higher than the projected world's best climate models.

Scientists have determined the amount of gaseous emissions of inorganic iodine, following the reaction of iodide with ozone in a series of laboratory experiments. They showed that the interaction of iodide with ozone leads to the formation and molecular iodine, and gipoiodnoy acid. Using laboratory models, scientists have shown that the reaction of ozone with iodide at the sea surface can generate about 75% of the observed levels of iodine oxide over the tropical Atlantic Ocean.

Category: Atmosphere

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