Mechanisms and feedbacks causing changes in upper 3 stratospheric ozone in the 21 st century
نویسندگان
چکیده
منابع مشابه
Mechanisms and feedback causing changes in upper stratospheric ozone in the 21st century
[1] Stratospheric ozone is expected to increase during the 21st century as the abundance of halogenated ozone‐depleting substances decrease to 1960 values. However, climate change will likely alter this “recovery” of stratospheric ozone by changing stratospheric temperatures, circulation, and abundance of reactive chemical species. Here we quantify the contribution of different mechanisms to ch...
متن کاملAn Overview of the Scientific Aspects of Ozone Depletion and Their Impact on the Environment
This paper describes the protective action of stratospheric ozone together with different mechanisms causing ozone depletion. Ozone absorbs UV radiation coming from the Sun. Increased UV radiation due to ozone depletion affects people, terrestrial and aquatic ecosystems, materials as well as air quality. Chlorofluorocarbons, halons and methyl bromide are all significant ozone depleting substanc...
متن کاملComment on “ Tropospheric temperature response to stratospheric ozone recovery in the 21 st century ” by Hu et al . ( 2011 )
Stratospheric ozone recovery is expected to figure prominently in twenty-first century climate change. In a recent paper, Hu et al. (2011) argue that one impact of ozone recovery will be to enhance the warming of the surface-troposphere system produced by increases in wellmixed greenhouse gases. Furthermore, this enhanced warming would be strongest in the Northern Hemisphere, which is surprisin...
متن کاملThe impact of anthropogenic chlorine emissions, stratospheric ozone change and chemical feedbacks on stratospheric water
Mixing ratios of water (H2O) in the stratosphere appear to increase due to increased input of H2O and methane from the troposphere and due to intensified oxidation of CH4 in the stratosphere, but many of the underlying mechanisms are not yet understood. Here we identify and quantify three chemical mechanisms which must have led to more efficient oxidation of CH4 in the stratosphere over the pas...
متن کاملStratospheric Ozone in the Post-CFC Era
Vertical and latitudinal changes in the stratospheric ozone in the post-chlorofluorocarbon (CFC) era are investigated using simulations of the recent past and the 21st century with a coupled chemistry-climate model. Model results reveal that, in the 2060s when the stratospheric halogen loading is projected to return to its 1980 values, the extratropical column ozone is significantly higher than...
متن کامل