Uncontrolled Ozone-depleting Chemicals on the Rise

Published By : 17 Feb 2015 | Published By : QYRESEARCH

In what could offset the Montreal Protocol made over 25 years ago, chemicals that destroy the ozone layer are not being controlled by the United Nations and are increasing at a rapid rate.

Scientists have recently discovered that one of the “very short-lived substances”, or VSLS, is growing at an alarming rate. The findings were published in the Nature Geoscience journal.

The sources of VSLS can be either natural or industrial. One such VSLS, dichloromethane, is used in a wide array of processes in multiple industries. The authors of the study have written that the amount of dichloromethane in the environment is high.

Ryan Hossaini, the lead author, said that the industrial production of VSLS is uncontrolled by the Montreal Protocol established by the United Nations. The protocol was established at a time when the contribution of VSLS to ozone-depletion was minimal.

He also said that his team has identified that one of these chemicals is growing at a fast pace. If this growth is not controlled, it could offset some of the benefits that were credited by the Montreal Protocol to the ozone layer.

A 3D computer model was utilized by the team to gauge the effect of VSLS on the ozone layer and Earth’s climate in general. They also made use of the readings of these chemicals that were taken in the previous two decades. The readings include the ones taken by the National Oceanic and Atmospheric Administration.

What the scientists found was that while VSLS caused minimal ozone depletion in compared to the ones that the U.N. can control through the Montreal Protocol, the substances were at least four times as effective in changing climate.
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