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RISImpacts of SST Anomalies in the Agulhas Current System on the Regional Climate Variability
Publisher: American Meteorological Society
Abstract: he potential impact of the variability in the Agulhas Current system on the large-scale atmospheric state in the Southern Hemisphere is examined, using the monthly near-surface baroclinicity as the key parameter, for the ...
Greenland Sea Surface Temperature Change and Accompanying Changes in the Northern Hemispheric Climate
Publisher: American Meteorological Society
Abstract: sudden change in the reference Greenland Sea surface temperature (GSST) in 1979 is identified. It is found to be a part of complex changes in the northern North Atlantic seas. The GSST change, in particular, resulted in a ...
Effects of Ice Albedo and Runoff Feedbacks on the Thermohaline Circulation
Publisher: American Meteorological Society
Abstract: Simple parameterizations of the ice albedo feedback and its implicit effect on the high-latitude river runoff have been added to the coupled atmosphere-ocean box model developed by Nakamura et al. The additional parameterizations ...
Dominant Anomaly Patterns in the Near-Surface Baroclinicity and Accompanying Anomalies in the Atmosphere and Oceans. Part I: North Atlantic Basin
Publisher: American Meteorological Society
Abstract: Variability in the monthly mean flow and storm track in the North Atlantic basin is examined with a focus on the near-surface baroclinicity, B = Bxi + Byj. Dominant patterns of anomalous B found from empirical orthogonal ...
Dominant Anomaly Patterns in the Near-Surface Baroclinicity and Accompanying Anomalies in the Atmosphere and Oceans. Part II: North Pacific Basin
Publisher: American Meteorological Society
Abstract: Variability in the monthly-mean flow and storm track in the North Pacific basin is examined with a focus on the near-surface baroclinicity. Dominant patterns of anomalous near-surface baroclinicity found from empirical ...
Impacts of the Oyashio Temperature Front on the Regional Climate
Publisher: American Meteorological Society
Abstract: mpacts of a sea surface temperature front (SSTF) in the northwestern Pacific Ocean on the large-scale summer atmospheric state in the region are examined with a regional atmospheric circulation model developed at the ...
Diagnoses of an Eddy-Resolving Atlantic Ocean Model Simulation in the Vicinity of the Gulf Stream. Part II: Eddy Potential Enstrophy and Eddy Potential Vorticity Fluxes
Publisher: American Meteorological Society
Abstract: Output of an eddy-resolving model of the North Atlantic is diagnosed in the vicinity of the Gulf Stream (GS), using quasigeostrophic potential vorticity (QGPV), quasigeostrophic potential enstrophy (QGPE), and modified ...
On the Eddy Isopycnal Thickness Diffusivity of the Gent–McWilliams Subgrid Mixing Parameterization
Publisher: American Meteorological Society
Abstract: Output of an eddy-resolving model of the North Atlantic Ocean is used to diagnose the eddy thickness diffusivity coefficient, ?, defined by Gent and McWilliams in their quasi-adiabatic parameterization for transports by ...
The Effects of Flow Asymmetry on the Direction of Rossby Wave Breaking
Publisher: American Meteorological Society
Abstract: The relationship between the direction of the breaking of Rossby waves on an isolated jet and the cross-jet asymmetry of the flow is investigated. The flow structure of a circular jet is, under most circumstances, such ...
Quasigeostrophic Transient Wave Activity Flux: Updated Climatology and Its Role in Polar Vortex Anomalies
Publisher: American Meteorological Society
Abstract: The climatology of transient wave activity flux defined by Plumb has been calculated for each calendar month, for high-frequency (HF) and low-frequency (LF) waves, using the NCAR?NCEP reanalyses for both hemispheres. Wave ...