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RISA Continuum of Sudden Stratospheric Warmings
Publisher: American Meteorological Society
Abstract: The k-means cluster technique is used to examine 43 yr of daily winter Northern Hemisphere (NH) polar stratospheric data from the 40-yr ECMWF Re-Analysis (ERA-40). The results show that the NH winter stratosphere exists ...
A Two-Dimensional Model of the Quasi-biennial Oscillation of Ozone
Publisher: American Meteorological Society
Abstract: The stratospheric quasi-biennial oscillation (QBO) in zonal wind, temperature and column ozone has been successfully modeled in a two-dimensional dynamical/chemical model by the introduction of a parameterization scheme ...
Interannual Variability of Trace Gases in the Subtropical Winter Stratosphere
Publisher: American Meteorological Society
Abstract: Measurements of water vapor and methane from the Halogen Occultation Experiment instrument on board the Upper Atmosphere Research Satellite are used to study the interannual variability of trace gas distributions in the ...
Stratospheric Temperature and Radiative Forcing Response to 11-Year Solar Cycle Changes in Irradiance and Ozone
Publisher: American Meteorological Society
Abstract: The 11-yr solar cycle temperature response to spectrally resolved solar irradiance changes and associated ozone changes is calculated using a fixed dynamical heating (FDH) model. Imposed ozone changes are from satellite ...
A Three-Dimensional View of the Evolution of Midlatitude Stratospheric Intrusions
Publisher: American Meteorological Society
Abstract: Three-dimensional views of midlatitude stratospheric intrusions are presented. The views are obtained by plotting a surface of constant potential vorticity (PV), where the PV is diagnosed from a 6-day run of the U.K. ...
Stratospheric Communication of El Niño Teleconnections to European Winter
Publisher: American Meteorological Society
Abstract: The stratospheric role in the European winter surface climate response to El Niño?Southern Oscillation sea surface temperature forcing is investigated using an intermediate general circulation model with a well-resolved ...
The Effect of a Well-Resolved Stratosphere on Surface Climate: Differences between CMIP5 Simulations with High and Low Top Versions of the Met Office Climate Model
Publisher: American Meteorological Society
Abstract: he importance of using a general circulation model that includes a well-resolved stratosphere for climate simulations, and particularly the influence this has on surface climate, is investigated. High top model simulations ...
Green’s Functions and Boundary Integral Analysis for Exponentially Graded Materials: Heat Conduction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Free space Green’s functions are derived for graded materials in which the thermal conductivity varies exponentially in one coordinate. Closed-form expressions are obtained for the steady-state diffusion equation, in two ...
Synoptic Interpretation of Measurements from HALOE
Publisher: American Meteorological Society
Abstract: The degree to which the Southern Hemisphere polar vortex is isolated against horizontal (isentropic) mixing is investigated using data from the Halogen Occulation Experiment (HALOE), U.K. Meteorological Office (UKMO) ...
The Climatology of the Middle Atmosphere in a Vertically Extended Version of the Met Office’s Climate Model. Part I: Mean State
Publisher: American Meteorological Society
Abstract: The climatology of a stratosphere-resolving version of the Met Office?s climate model is studied and validated against ECMWF reanalysis data. Ensemble integrations are carried out at two different horizontal resolutions. ...