Sentences with phrase «chemical ozone destruction»

Large amounts of chlorine monoxide - the primary agent of chemical ozone destruction in the cold polar lower stratosphere - were observed for the same day and same altitude (dark blue colors).

The white line marks the area within which the chemical ozone destruction took place.

The number of particles that form, and therefore the amount of chemical ozone destruction, is extremely sensitive to small changes in stratospheric temperature.

Here we demonstrate that chemical ozone destruction over the Arctic in early 2011 was — for the first time in the observational record — comparable to that in the Antarctic ozone hole.

Chemical ozone destruction occurs over both polar regions in local winter — spring.

The chemical balance in the stratosphere is changed significantly by the presence of these clouds, altering the breakdown products from manmade CFCs (chlorofluorocarbons) so that rapid chemical ozone destruction can occur in the presence of sunlight.

The chemical balance in the stratosphere is changed significantly by the presence of these clouds, altering the breakdown products from manmade CFCs (chlorofluorocarbons) so that rapid chemical ozone destruction can occur in the presence of sunlight.

Not exact matches

Global warming, the ozone hole, overpopulation, starvation and malnutrition, war, unemployment, the destruction of species and the rain forests, pollution of water and air, pesticide and herbicide poisoning, errors in genetic engineering, erosion of topsoil, overfishing, anarchy and crime, the possibility of a nuclear mishap, chemical warfare or all - out nuclear war: together, or in some cases singly, these dangers threaten to «catch us unexpectedly, like a trap.»

The 1987 international agreement phased out the industrial production of chlorofluorocarbons (CFCs): chlorine - containing chemicals that help trigger the destruction of stratospheric ozone, which screens out cancer - causing ultraviolet light.

Likewise, the production and destruction of oxygen, ozone, and methane is driven by chemical reactions powered by light, making the type of star important to consider as well.

Blamed for everything from E numbers to the destruction of the ozone layer, the chemicals industry has every reason to feel unloved, despite the widespread benefits that it has brought to every aspect of daily life, not least the paper and inks that bring us New Scientist every week.

NASA's upper atmosphere research satellite, for example, carries the British - made microwave limb sounder (MLS) which measures concentrations of chlorine monoxide — a chemical that plays a critical part in the destruction of ozone.

Due to the temperature dependence on the rates of chemical reactions involving ozone, cooler temperatures also lead to more ozone destruction.

Comment on 13: I fully agree with Markus Rex that total ozone measurements can not give any clues on chemical destruction in isolated layers, and that we may have been lucky that O3 transport cancelled out the chemical thinning that happened during the last months.

Scientists monitoring the highest levels of the atmosphere say they have detected a slowing in the rate of destruction of Earth» s protective veil of ozone, the first sign that the phasing out of chemicals that harm the ozone layer is having a restorative effect.

In colder years, more ice particles will freeze, allowing more chemical destruction of the ozone layer.

-- For purposes of this paragraph, the term «destruction» means the conversion of a substance by thermal, chemical, or other means to another substance with little or no carbon dioxide equivalent value and no ozone depletion potential.

Possibly also the number of chemical reactions in the upper atmosphere increases due to the increased solar effects with faster destruction of ozone.

But Nature reported last year about a puzzling inconsistency discovered in the established chemical model of stratospheric ozone destruction.

In early 1976, Rowland and Molina discovered that a chemical reaction involving chlorine nitrate might reduce ozone destruction from their previous estimate of 7 - 13 % to about 7 %.

In addition to causing acid rain, these chemicals are linked with increased water pollution and destruction of the ozone layer.