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RISObservations of Large-Scale Ocean–Atmosphere Interaction in the Southern Hemisphere
Publisher: American Meteorological Society
Abstract: The authors provide a detailed examination of observed ocean?atmosphere interaction in the Southern Hemisphere (SH). Focus is placed on the observed relationships between variability in SH extratropical sea surface temperature ...
Observational Evidence of Reemergence in the Extratropical Southern Hemisphere
Publisher: American Meteorological Society
Abstract: Observations of subsurface temperatures are used to examine the winter-to-winter ?reemergence? of sea surface temperature (SST) anomalies in the extratropical South Pacific Ocean. Reemergence is the mechanism through which ...
Understanding Recent Stratospheric Climate Change
Publisher: American Meteorological Society
Abstract: The long-term, global-mean cooling of the lower stratosphere stems from two downward steps in temperature, both of which are coincident with the cessation of transient warming after the volcanic eruptions of El Chichón and ...
On the Linkages between the Tropospheric Isentropic Slope and Eddy Fluxes of Heat during Northern Hemisphere Winter
Publisher: American Meteorological Society
Abstract: revious studies have demonstrated the key role of baroclinicity and thus the isentropic slope in determining the climatological-mean distribution of the tropospheric eddy fluxes of heat. Here the authors examine the role ...
Equatorial Planetary Waves and Their Signature in Atmospheric Variability
Publisher: American Meteorological Society
Abstract: quatorial planetary waves are a fundamental component of the tropical climate system. Previous studies have examined their structure in the climatological-mean circulation, their role in the climatological-mean momentum ...
Comparing the Roles of Barotropic versus Baroclinic Feedbacks in the Atmosphere’s Response to Mechanical Forcing
Publisher: American Meteorological Society
Abstract: o barotropic or baroclinic eddy feedbacks dominate the atmospheric circulation response to mechanical forcing?To address this question, barotropic torques are imposed over a range of latitudes in both an idealized general ...
Barotropic and Baroclinic Annular Variability in the Southern Hemisphere
Publisher: American Meteorological Society
Abstract: he leading patterns of large-scale climate variability in the Southern Hemisphere are examined in the context of extratropical kinetic energy. It is argued that variability in the Southern Hemisphere extratropical flow can ...
Baroclinic and Barotropic Annular Variability in the Northern Hemisphere
Publisher: American Meteorological Society
Abstract: arge-scale variability in the Northern Hemisphere (NH) circulation can be viewed in the context of three primary types of structures: 1) teleconnection patterns, 2) a barotropic annular mode, and 3) a baroclinic annular ...
On the Signatures of Equatorial and Extratropical Wave Forcing in Tropical Tropopause Layer Temperatures
Publisher: American Meteorological Society
Abstract: emperatures in the tropical tropopause layer (TTL) play an important role in stratosphere?troposphere exchange and in the formation and maintenance of thin cirrus clouds. Many previous studies have examined the contributions ...
What Makes an Annular Mode “Annular”?
Publisher: American Meteorological Society
Abstract: AbstractAnnular patterns with a high degree of zonal symmetry play a prominent role in the natural variability of the atmospheric circulation and its response to external forcing. But despite their apparent importance for ...