| | |  | | | | Record from Web of Science® | | | | | | |
| Interpretation of recent Southern Hemisphere climate change |
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| Author(s): Thompson DWJ, Solomon S |
| Source: SCIENCE Volume: 296 Issue: 5569 Pages: 895-899 Published: MAY 3 2002 |
| Times Cited: 350 References: 45 |
| Abstract: Climate variability in the high-latitude Southern Hemisphere (SH) is dominated by the SH annular mode, a large-scale pattern of variability characterized by fluctuations in the strength of the circumpolar vortex. We present evidence that recent trends in the SH tropospheric circulation can be interpreted as a bias toward the high-index polarity of this pattern, with stronger westerly flow encircling the polar cap. It is argued that the largest and most significant tropospheric trends can be traced to recent trends in the lower stratospheric polar vortex, which are due largely to photochemical ozone losses. During the summer-fall season, the trend toward stronger circumpolar flow has contributed substantially to the observed warming over the Antarctic Peninsula and Patagonia and to the cooling over eastern Antarctica and the Antarctic plateau. |
| Document Type: Article |
| Language: English |
| Reprint Address: Thompson, DWJ (reprint author), Colorado State Univ, Dept Atmospher Sci, Foothills Campus, Ft Collins, CO 80523 USA |
Addresses:
1. Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA
2. NOAA, Aeron Lab, Boulder, CO 80305 USA |
| Publisher: AMER ASSOC ADVANCEMENT SCIENCE, 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA |
| Subject Category: Multidisciplinary Sciences |
| IDS Number: 549KF |
| ISSN: 0036-8075 |
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| | | | | | | | | Record from Web of Science® | | | | | | | | | |