 |
| Titel |
Comment on "Tropospheric temperature response to stratospheric ozone recovery in the 21st century" by Hu et al. (2011) |
| VerfasserIn |
M. Previdi, L. M. Polvani |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7316
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 12, no. 11 ; Nr. 12, no. 11 (2012-06-05), S.4893-4896 |
| Datensatznummer |
250011218
|
| Publikation (Nr.) |
 copernicus.org/acp-12-4893-2012.pdf |
|
|
|
|
|
| Zusammenfassung |
| 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 well-mixed
greenhouse gases. Furthermore, this enhanced warming would be strongest in
the Northern Hemisphere, which is surprising since previous studies have
consistently shown the effects of stratospheric ozone changes to be most
pronounced in the Southern Hemisphere. Hu et al. (2011) base their claims
largely on differences in the simulated temperature change between two
groups of CMIP3 (Coupled Model Intercomparison Project 3) climate models,
one group which included stratospheric ozone recovery in its twenty-first
century simulations and a second group which did not. Both groups of models
were forced with the same increases in well-mixed greenhouse gases according
to the A1B emissions scenario. In the current work, we compare the surface
temperature responses of the same two groups of models in a different
experiment in which atmospheric CO2 was increased by 1% per year
until doubling. We find remarkably similar differences in the simulated
surface temperature change between the two sets of models as Hu et al. (2011)
found for the A1B experiment, suggesting that the enhanced warming
which they attribute to stratospheric ozone recovery is actually a
reflection of different responses of the two model groups to greenhouse gas
forcing. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|