The composition of the upper troposphere / lower tratosphere (UTLS) is affected by the Brewer Dobson Circulation (BDC) as well transport across the tropopause and the jets. Since these dynamical processes involve the coupling of transport and mixing processes on very different temporal and spatial scales, long-term changes or even mean distributions from observational data sets on the...
Tropospheric ozone is a greenhouse gas and pollutant detrimental to human health and crop and ecosystem productivity. However, it is difficult to observe and quantify on the global scale, due to its acute spatial variability, resulting from its variable lifetime and its range of sources (injection from the stratosphere, or photochemical production from natural and anthropogenic precursor...
We analyse stratospheric ozone changes due to greenhouse gases and their impact on DNA active UV-B irradiance at ground level. The analysis is an extension of the recent study by Eleftheratos et al. (2020) who showed that solar ultraviolet-B irradiance that produces DNA damage would increase after the year 2050 in mid latitudes by +1.3% per decade. Results were based on chemistry climate model...
