Diurnal atmosphere-ocean signals in Earth's rotation rate and a possible modulation through ENSO
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10366824" target="_blank" >RIV/00216208:11320/17:10366824 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1002/2017GL072633" target="_blank" >http://dx.doi.org/10.1002/2017GL072633</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/2017GL072633" target="_blank" >10.1002/2017GL072633</a>
Alternative languages
Result language
angličtina
Original language name
Diurnal atmosphere-ocean signals in Earth's rotation rate and a possible modulation through ENSO
Original language description
Space geodetic determinations of a 6s length-of-day (LOD) anomaly at the diurnal S-1 frequency are reconciled with excitation estimates from geophysical fluid models. Preference is given to a hybrid excitation scheme that combines atmospheric torques with oceanic angular momentum (OAM) terms from hydrodynamic forward modeling. A joint inversion of all data sets yields an LOD in-phase and quadrature estimate of (5.91, -0.22)s, matching space geodetic S-1 terms well within their formal uncertainties. Non-harmonic LOD excitations, while less than 30% of the time-averaged rotation rate contribution, are conclusively linked to El Nino-Southern Oscillation (ENSO) as the main perturbation of diurnal cycle characteristics in the troposphere. ENSO modulations of particular relevance are those in OAM, associated with the barotropic ocean response to regional modifications in the diurnal atmospheric pressure wave. The study thus highlights previously unexplored aspects of non-tidal mass-field variability in the Earth system.
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
10500 - Earth and related environmental sciences
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geophysical Research Letters
ISSN
0094-8276
e-ISSN
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Volume of the periodical
44
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
2755-2762
UT code for WoS article
000399762700017
EID of the result in the Scopus database
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