Local Finite-Amplitude Wave Activity as a Diagnostic for Rossby Wave Packets

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • Paolo Ghinassi
  • Georgios Fragkoulidis
  • Volkmar Wirth
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000450060900005&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1175/MWR-D-18-0068.1
eISSN
1520-0493
Externe Identifier
  • Clarivate Analytics Document Solution ID: HA2IP
ISSN
0027-0644
Ausgabe der Veröffentlichung
12
Zeitschrift
MONTHLY WEATHER REVIEW
Schlüsselwörter
  • Dynamics
  • Planetary waves
  • Potential vorticity
  • Wave breaking
  • Wavelets
  • Waves
  • atmospheric
Paginierung
4099 - 4114
Datum der Veröffentlichung
2018
Status
Published
Titel
Local Finite-Amplitude Wave Activity as a Diagnostic for Rossby Wave Packets
Sub types
  • Article
Ausgabe der Zeitschrift
146

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<jats:title>Abstract</jats:title><jats:p>Upper-tropospheric Rossby wave packets (RWPs) are important dynamical features, because they are often associated with weather systems and sometimes act as precursors to high-impact weather. The present work introduces a novel diagnostic to identify RWPs and to quantify their amplitude. It is based on the local finite-amplitude wave activity (LWA) of Huang and Nakamura, which is generalized to the primitive equations in isentropic coordinates. The new diagnostic is applied to a specific episode containing large-amplitude RWPs and compared with a more traditional diagnostic based on the envelope of the meridional wind. In this case, LWA provides a more coherent picture of the RWPs and their zonal propagation. This difference in performance is demonstrated more explicitly in the framework of an idealized barotropic model simulation, where LWA is able to follow an RWP into its fully nonlinear stage, including cutoff formation and wave breaking, while the envelope diagnostic yields reduced amplitudes in such situations.</jats:p>
Autoren
  • Paolo Ghinassi
  • Georgios Fragkoulidis
  • Volkmar Wirth
DOI
10.1175/mwr-d-18-0068.1
eISSN
1520-0493
ISSN
0027-0644
Ausgabe der Veröffentlichung
12
Zeitschrift
Monthly Weather Review
Sprache
en
Online publication date
2018
Paginierung
4099 - 4114
Datum der Veröffentlichung
2018
Status
Published
Herausgeber
American Meteorological Society
Herausgeber URL
http://dx.doi.org/10.1175/mwr-d-18-0068.1
Datum der Datenerfassung
2020
Titel
Local Finite-Amplitude Wave Activity as a Diagnostic for Rossby Wave Packets
Ausgabe der Zeitschrift
146

Datenquelle: Crossref

Beziehungen:
Eigentum von

Werkzeuge