An upper-branch Brewer-Dobson circulation index for attribution of stratospheric variability and improved ozone and temperature trend analysis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10334379" target="_blank" >RIV/00216208:11320/16:10334379 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.5194/acp-16-15485-2016" target="_blank" >http://dx.doi.org/10.5194/acp-16-15485-2016</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5194/acp-16-15485-2016" target="_blank" >10.5194/acp-16-15485-2016</a>

Result language

angličtina

Original language name

An upper-branch Brewer-Dobson circulation index for attribution of stratospheric variability and improved ozone and temperature trend analysis

Original language description

We find that wintertime temperature anomalies near 4 hPa and 50 degrees 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 Brewer-Dobson 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 60% of the total variability of temperature, peaking at similar to 5 hPa and dropping to 0 at similar to 50 and similar to 0.5 hPa, respectively, and increasing again into the mesosphere. Ozone similarly sees up to an additional 50% of variability accounted for, with a slightly higher maximum and strong altitude dependence, with zero improvement found at 10 hPa. Further, the uncertainty on all equatorial multiple-linear regression coefficients can be reduced by up to 35 and 20% in temperature and ozone, respectively, and so this index is an important tool for quantifying current and future ozone recovery.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DG - Atmospheric sciences, meteorology

OECD FORD branch

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Project

<a href="/en/project/GC16-01562J" target="_blank" >GC16-01562J: Middle atmosphere effects of localized gravity wave forcing</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Atmospheric Chemistry and Physics

ISSN

1680-7316

e-ISSN

—

Volume of the periodical

16

Issue of the periodical within the volume

24

Country of publishing house

DE - GERMANY

Number of pages

16

Pages from-to

15485-15500

UT code for WoS article

000391486900004

EID of the result in the Scopus database

2-s2.0-85003982882