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RISComments on “Global and Regional Entropy Production by Radiation Estimated from Satellite Observations”
Publisher: American Meteorological Society
Solar Cycle Signals in the Pacific and the Issue of Timings
Publisher: American Meteorological Society
Abstract: he solar cycle signal in sea level pressure during 1856?2007 is analyzed. Using composites of data from January?February in solar cycle peak years the strong positive signal in the region of the Aleutian low, found by ...
Entropy Production Rates of the Climate
Publisher: American Meteorological Society
Abstract: There is ongoing interest in the global entropy production rate as a climate diagnostic and predictor, but progress has been limited by ambiguities in its definition; different conceptual boundaries of the climate system ...
The Final Warming Date of the Antarctic Polar Vortex and Influences on its Interannual Variability
Publisher: American Meteorological Society
Abstract: More than 40 years of radiosonde data from two Antarctic stations are examined for changes in the date of the final stratospheric warming that occurs each year as the vortex breaks up in spring/summer. A new measure of ...
Annular Variability and Eddy–Zonal Flow Interactions in a Simplified Atmospheric GCM. Part I: Characterization of High- and Low-Frequency Behavior
Publisher: American Meteorological Society
Abstract: Experiments have been performed using a simplified, Newtonian forced, global circulation model to investigate how variability of the tropospheric jet can be characterized by examining the combined fluctuations of the two ...
The Response of Tropospheric Circulation to Perturbations in Lower-Stratospheric Temperature
Publisher: American Meteorological Society
Abstract: A multiple regression analysis of the NCEP?NCAR reanalysis dataset shows a response to increased solar activity of a weakening and poleward shift of the subtropical jets. This signal is separable from other influences, ...
The Role of Eddies in Driving the Tropospheric Response to Stratospheric Heating Perturbations
Publisher: American Meteorological Society
Abstract: A simplified general circulation model has been used to investigate the chain of causality whereby changes in tropospheric circulation and temperature are produced in response to stratospheric heating perturbations. Spinup ...
A Mechanism for the Effect of Tropospheric Jet Structure on the Annular Mode–Like Response to Stratospheric Forcing
Publisher: American Meteorological Society
Abstract: or many climate forcings the dominant response of the extratropical circulation is a latitudinal shift of the tropospheric midlatitude jets. The magnitude of this response appears to depend on climatological jet latitude ...
The Impact of the State of the Troposphere on the Response to Stratospheric Heating in a Simplified GCM
Publisher: American Meteorological Society
Abstract: Previous studies have made use of simplified general circulation models (sGCMs) to investigate the atmospheric response to various forcings. In particular, several studies have investigated the tropospheric response to ...
Strong Dynamical Modulation of the Cooling of the Polar Stratosphere Associated with the Antarctic Ozone Hole
Publisher: American Meteorological Society
Abstract: model simulation forced by prescribed ozone depletion shows strong dynamical modulation of the springtime cooling of the polar stratosphere associated with the Antarctic ozone hole. The authors find that in late spring the ...