Advertisement

If you have an ACS member number, please enter it here so we can link this account to your membership. (optional)

ACS values your privacy. By submitting your information, you are gaining access to C&EN and subscribing to our weekly newsletter. We use the information you provide to make your reading experience better, and we will never sell your data to third party members.

ENJOY UNLIMITED ACCES TO C&EN

Environment

Replenished Ozone Could Affect Southern Hemisphere Winds

June 16, 2008 | A version of this story appeared in Volume 86, Issue 24

[+]Enlarge
Credit: Courtesy of Ralph Nuzzo
Credit: Courtesy of Ralph Nuzzo

Earth's healing ozone layer may have unexpected effects on the climate of the Southern Hemisphere, researchers predict (Science 2008, 320, 1486). An international team headed by Columbia University's Seok-Woo Son used the Chemistry Climate Model Validation (CCMVal) system to forecast that the Westerly Jet, a wind current that races around the Southern Hemisphere during the summer, may ultimately slow down as the ozone layer continues to regenerate through the middle of this century. The CCMVal model predicts that deceleration of the Westerly Jet would lead to an increase in ocean surface temperatures and a decrease in sea ice, as well as altered ocean circulation patterns. This scenario runs counter to the general improvement in climate conditions predicted by the most recent assessment issued by the Intergovernmental Panel on Climate Change (IPCC). Son and coworkers attribute the significant differences between the CCMVal and IPCC models to the "fully interactive stratospheric chemistry" of CCMVal, which permits it to account for how increasing ozone levels could affect the atmosphere. The study demonstrates that developing more accurate computer models is essential in predicting and understanding the outcomes of complicated phenomena such as climate change, the researchers note.

Article:

This article has been sent to the following recipient:

0 /1 FREE ARTICLES LEFT THIS MONTH Remaining
Chemistry matters. Join us to get the news you need.