Interannual variability in the gravity wave drag - vertical coupling and possible climate links
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10388205" target="_blank" >RIV/00216208:11320/18:10388205 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.5194/esd-9-647-2018" target="_blank" >https://doi.org/10.5194/esd-9-647-2018</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5194/esd-9-647-2018" target="_blank" >10.5194/esd-9-647-2018</a>
Alternative languages
Result language
angličtina
Original language name
Interannual variability in the gravity wave drag - vertical coupling and possible climate links
Original language description
Gravity wave drag (GWD) is an important driver of the middle atmospheric dynamics. However, there are almost no observational constraints on its strength and distribution (especially horizontal). In this study we analyze orographic GWD (OGWD) output from Canadian Middle Atmosphere Model simulation with specified dynamics (CMAM-sd) to illustrate the interannual variability in the OGWD distribution at particular pressure levels in the stratosphere and its relation to major climate oscillations. We have found significant changes in the OGWD distribution and strength depending on the phase of the North Atlantic Oscillation (NAO), quasi-biennial oscillation (QBO) and El Nino-Southern Oscillation. The OGWD variability is shown to be induced by lower-tropospheric wind variations to a large extent, and there is also significant variability detected in near-surface momentum fluxes. We argue that the orographic gravity waves (OGWs) and gravity waves (GWs) in general can be a quick mediator of the tropospheric variability into the stratosphere as the modifications of the OGWD distribution can result in different impacts on the stratospheric dynamics during different phases of the studied climate oscillations.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10509 - Meteorology and atmospheric sciences
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Earth System Dynamics
ISSN
2190-4979
e-ISSN
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Volume of the periodical
9
Issue of the periodical within the volume
2
Country of publishing house
DE - GERMANY
Number of pages
15
Pages from-to
647-661
UT code for WoS article
000433128900002
EID of the result in the Scopus database
2-s2.0-85047521057