Impact of very short-lived halogens on stratospheric ozone abundance and UV radiation in a geo-engineered atmosphere
Item
Title (Dublin Core)
Impact of very short-lived halogens on stratospheric ozone abundance and UV radiation in a geo-engineered atmosphere
Description (Dublin Core)
The impact of very short-lived (VSL) halogenated source species on the ozone layer and surface erythemal ultraviolet radiation (UV<sub>ERY</sub>) is investigated in the context of geo-engineering of climate by stratospheric sulfur injection. For a projected 2040 model atmosphere, consideration of VSL halogens at their upper limit results in lower ozone columns and higher UV<sub>ERY</sub> due to geo-engineering for nearly all seasons and latitudes, with UV<sub>ERY</sub> rising by 12% and 6% in southern and northern high latitudes, respectively. When VSL halogen sources are neglected, future UV<sub>ERY</sub> increases due to declines in ozone column are nearly balanced by reductions of UV<sub>ERY</sub> due to scattering by the higher stratospheric aerosol burden in mid-latitudes. Consideration of VSL sources at their upper limit tips the balance, resulting in annual average increases in UV<sub>ERY</sub> of up to 5% in mid and high latitudes. Therefore, VSL halogens should be considered in models that assess the impact of stratospheric sulfur injections on the ozone layer.
Creator (Dublin Core)
Tilmes, S.
Kinnison, D. E.
Garcia, R. R.
Salawitch, R.
Canty, T.
Lee-Taylor, J.
Madronich, S.
Chance, K.
Date (Dublin Core)
2018-01-15
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-12-10945-2012
https://acp.copernicus.org/articles/12/10945/2012/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
