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The Influence of Tropical heating Displacements on the Extratropical Climate
Publisher: American Meteorological Society
Abstract: The hypothesis is advanced that a latitudinal shift in the tropical convective heating pattern can significantly alter temperatures in the extratropics. Results of a simplified GCM show that the shift of a prescribed ...
Axisymmetric Circulations Forced by Heat and Momentum Sources: A Simple Model Applicable to the Venus Atmosphere
Publisher: American Meteorological Society
Abstract: The parametric behavior of an axially symmetric circulation induced by heat and momentum sources is analyzed in the context of a simple Boussinesq model. Implications for the Venus atmosphere are examined in the light of ...
Hadley Circulation as a Modulator of the Extratropical Climate
Publisher: American Meteorological Society
Abstract: Studies based on GCM ensemble forecasts have shown that an intensification of the cross-equatorial Hadley circulation associated with a latitudinal displacement of the zonally averaged convective heating in the Tropics can ...
Evaluation of Coincident Passive Microwave Rainfall Estimates Using TRMM PR and Ground Measurements as References
Publisher: American Meteorological Society
Abstract: This study compares instantaneous rainfall estimates provided by the current generation of retrieval algorithms for passive microwave sensors using retrievals from the Tropical Rainfall Measuring Mission (TRMM) precipitation ...
Modulation of Dynamic Heating in the Winter Extratropics Associated with the Cross-Equatorial Hadley Circulation
Publisher: American Meteorological Society
Abstract: The hypothesis that the cross-equatorial Hadley circulation can modulate the poleward heat transport in the winter extratropics is investigated using the Goddard Earth Observing System (GEOS-1) GCM for 10 northern winter ...
Estimation of Rain Intensity Spectra over the Continental United States Using Ground Radar–Gauge Measurements
Publisher: American Meteorological Society
Abstract: high-resolution surface rainfall product is used to estimate rain characteristics over the continental United States as a function of rain intensity. By defining data at 4-km horizontal resolutions and 1-h temporal resolutions ...
Further Studies of the Circulation of the Venus Atmosphere
Publisher: American Meteorological Society
Abstract: We have extended our previous calculations of zonally averaged temperature, circulation, and eddy source requirements for the Venus atmosphere to include the region from the surface to 95 km, using a Curtis matrix method ...
Ageostrophic Effects on the Stratospheric Residual Circulation and Tracer Distributions
Publisher: American Meteorological Society
Abstract: We have examined an idealized, zonally averaged, nonlinear, ageostrophic circulation forced by differential heating and parameterized eddy mixing for a range of mixing values and boundary conditions. Using a simple ƒ-plane ...
Hadley Circulations for Zonally Averaged Heating Centered off the Equator
Publisher: American Meteorological Society
Abstract: Consistent with observations, we find that moving peak heating even 2 degrees off the equator leads to profound asymmetries in the Hadley circulation, with the winter cell amplifying greatly and the summer cell becoming ...
The Response of a Zonally Symmetric Atmosphere to Subtropical Thermal Forcing: Threshold Behavior
Publisher: American Meteorological Society
Abstract: We consider the response of a zonally symmetric atmosphere to a thermal forcing that is localized in the subtropics. Specifically, the equilibrium temperature distribution has a local subtropical peak and is flat elsewhere, ...