We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
A mid-latitude stratosphere dynamical index for attribution of stratospheric variability and improved ozone and temperature trend analysis.
- Authors
Ball, William T.; Kuchař, Aleš; Rozanov, Eugene V.; Staehelin, Johannes; Tummon, Fiona; Smith, Anne K.; Sukhodolov, Timofei; Stenke, Andrea; Revell, Laura; Coulon, Ancelin; Schmutz, Werner; Peter, Thomas
- Abstract
We find that wintertime temperature anomalies near 4 hPa and 50° N/S are related, through dynamics, to anomalies in ozone and temperature, particularly in the tropical stratosphere, but also throughout the upper stratosphere and mesosphere. These mid-latitude anomalies occur on timescales of up to a month, and are related to changes in wave-forcing. A change in the meridional circulation extends from the middle stratosphere into the mesosphere and forms a temperature-change quadrupole from equator to pole. We develop a dynamical index based on detrended, deseasonalised mid-latitude temperature. When employed in multiple linear regression, this index can account for up to 40 % of the total variability of temperature and ozone and a doubling of the total coefficient of determination in the equatorial stratosphere above 20 hPa. Further, the uncertainty on all multiple-linear regression coefficients can be reduced by up to 45 % and 25 % in temperature and ozone, respectively, and so this index is an important tool for quantifying current and future ozone recovery.
- Subjects
ATMOSPHERIC temperature; CLIMATE change; STRATOSPHERE; REGRESSION analysis; ATMOSPHERIC ozone
- Publication
Atmospheric Chemistry & Physics Discussions, 2016, p1
- ISSN
1680-7367
- Publication type
Article
- DOI
10.5194/acp-2016-449