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The arctic vortex in march 2011: a dynamical perspective
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hurwitz, Margaret M. Newman, Paul A. Garfinkel,Chaim I. |
| Copyright Year | 2011 |
| Description | Despite the record ozone loss observed in March 2011, dynamical conditions in the Arctic stratosphere were unusual but not unprecedented. Weak planetary wave driving in February preceded cold anomalies in t he polar lower stratosphere in March and a relatively late breakup of the Arctic vortex in April. La Nina conditions and the westerly phas e of the quasi-biennial oscillation (QBO) were observed in March 201 1. Though these conditions are generally associated with a stronger vortex in mid-winter, the respective cold anomalies do not persist t hrough March. Therefore, the La Nina and QBO-westerly conditions cannot explain the observed cold anomalies in March 2011. In contrast, po sitive sea surface temperature anomalies in the North Pacific may ha ve contributed to the unusually weak tropospheric wave driving and s trong Arctic vortex in late winter 2011. |
| File Size | 829811 |
| Page Count | 19 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20110015364 |
| Archival Resource Key | ark:/13960/t1xd5w65b |
| Language | English |
| Publisher Date | 2011-07-01 |
| Access Restriction | Open |
| Subject Keyword | Meteorology And Climatology Planetary Waves Ozone Depletion Vortices Southern Oscillation Stratosphere Ozone Sea Surface Temperature Quasi-biennial Oscillation Polar Meteorology Arctic Regions Anomalies Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
