Key findings !" Atmospheric concentrations of ozone depleting substances have decreased as a result of the effectiveness of the Montreal Protocol. !" The global (60°S–60°N) ozone concentration is projected to return to pre-1980 levels by around the middle of the 21st century. !" Antarctic ozone levels are projected to return to pre-1980 levels around 2060–75, which is 10–25 years later than pre...

Human activities have increased the number of environmental constraints for olive plants. Water, soil and air pollution are rapidly becoming important environmental concerns for plant growth and productivity. In addition to pollution problems, modifications in gaseous composition of the atmosphere, as well as terrestrial solar radiation changes associated with pollution, are the new factors stu...

Global ozone depletion, like global warming, is a common problem in the atmospheric community, the concern of people all over the world and many governments. China always takes environmental protection seriously in the process of developing its economy. It makes environmental protection a fundamental policy, and promotes international cooperation as part of a sustained effort to protect the env...

The 1987 Montreal Protocol on Substances that Deplete the Ozone Layer is a landmark agreement that has successfully reduced the global production, consumption, and emissions of ozone-depleting substances (ODSs). ODSs are also greenhouse gases that contribute to the radiative forcing of climate change. Using historical ODSs emissions and scenarios of potential emissions, we show that the ODS con...

The air layer between the nocturnal boundary layer and the top of the daily mixing layer in an ozonepolluted area is known to serve as an ozone reservoir since the ozone that is produced in the mixing layer on the preceding day is effectively preserved throughout the night in the air layer. Ozone reservoir layers existing at night can enhance the accumulation of surface ozone on the following d...

We study the effects of ozone depletion on primary production in ice-covered and open polar waters using a spectral radiative transfer model combined with a parameterization of the inhibition of marine photosynthesis by ultraviolet radiation. We find that ozone depletion might not have a negative influence on the aquatic algal community at high latitudes but instead could enhance primary produc...

The ozone molecule contains three atoms of oxygen and is mainly formed by the action of the ultraviolet rays of the sun on the diatomic oxygen molecules in the upper part of the Earth's atmosphere (called the stratosphere). Atmospheric pollution near the Earth's surface can form localized areas of ozone. The stratospheric ozone layer protects life on Earth by absorbing most of the harmful ultra...

Environmental impact assessment will soon become a compulsory phase in future potable water production projects, in algeria, especially, when alternative treatment processes such sedimentation ,coagulation sand filtration and Desinfection are considered. An impact assessment tool is therefore developed for the environmental evaluation of potable water production. in our study The evaluation met...