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RISExamination of Isentropic Circulation Response to a Doubling of Carbon Dioxide Using Statistical Transformed Eulerian Mean
Publisher: American Meteorological Society
Abstract: esponses of the atmospheric circulation to a doubling of CO2 are examined in a global climate model, focusing on the circulation on both dry and moist isentropes. The isentropic circulations are reconstructed using the ...
Midlatitude Tropopause and Low-Level Moisture
Publisher: American Meteorological Society
Abstract: new relationship between the surface distribution of equivalent potential temperature and the potential temperature at the tropopause is proposed. Using a Gaussian approximation for the distribution of equivalent potential ...
What Is the Representation of the Moisture–Tropopause Relationship in CMIP5 Models?
Publisher: American Meteorological Society
Abstract: dynamical relationship that connects the extratropical tropopause potential temperature and the near-surface distribution of equivalent potential temperature was proposed in a previous study and was found to work successfully ...
Contrasting Short- and Long-Term Projections of the Hydrological Cycle in the Southern Extratropics
Publisher: American Meteorological Society
Abstract: nalysis of model output from phase 5 of the Coupled Model Intercomparison Project (CMIP5) reveals that, in the zonal mean, the near-term projections of summertime changes of precipitation in the Southern Hemisphere (SH) ...
The Importance of the Montreal Protocol in Protecting Earth’s Hydroclimate
Publisher: American Meteorological Society
Abstract: he 1987 Montreal Protocol regulating emissions of chlorofluorocarbons (CFCs) and other ozone-depleting substances (ODSs) was motivated primarily by the harm to human health and ecosystems arising from increased exposure ...
The Role of Subtropical Irreversible PV Mixing in the Zonal Mean Circulation Response to Global Warming–Like Thermal Forcing
Publisher: American Meteorological Society
Abstract: he atmospheric circulation response to the global warming?like tropical upper tropospheric heating is revisited using a dry atmospheric general circulation model (AGCM) in light of new diagnostics based on the concept of ...
Weakened Potential Vorticity Barrier Linked to Recent Winter Arctic Sea Ice Loss and Midlatitude Cold Extremes
Publisher: American Meteorological Society
Abstract: AbstractA winter Eurasian cooling trend and a large decline of winter sea ice concentration (SIC) in the Barents?Kara Seas (BKS) are striking features of recent climate changes. The question arises as to what extent these ...
Atmospheric Circulation Response to an Instantaneous Doubling of Carbon Dioxide. Part I: Model Experiments and Transient Thermal Response in the Troposphere
Publisher: American Meteorological Society
Abstract: his study aims to understand the dynamical mechanisms driving the changes in the general circulation of the atmosphere due to increased carbon dioxide (CO2) by looking into the transient step-by-step adjustment of the ...
Atmospheric Circulation Response to an Instantaneous Doubling of Carbon Dioxide. Part II: Atmospheric Transient Adjustment and Its Dynamics
Publisher: American Meteorological Society
Abstract: he dynamical mechanisms underlying the transient circulation adjustment in the extratropical atmosphere after the instantaneous doubling of carbon dioxide are investigated using the National Center for Atmospheric Research ...
The Downward Influence of Uncertainty in the Northern Hemisphere Stratospheric Polar Vortex Response to Climate Change
Publisher: American Meteorological Society
Abstract: AbstractGeneral circulation models display a wide range of future predicted changes in the Northern Hemisphere winter stratospheric polar vortex. The downward influence of this stratospheric uncertainty on the troposphere ...