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RISRegime Transitions of Steady and Time-Dependent Hadley Circulations: Comparison of Axisymmetric and Eddy-Permitting Simulations
Publisher: American Meteorological Society
Abstract: Steady-state and time-dependent Hadley circulations are investigated with an idealized dry GCM, in which thermal forcing is represented as relaxation of temperatures toward a radiative-equilibrium state. The latitude ?0 ...
Orographic Effects of the Tibetan Plateau on the East Asian Summer Monsoon: An Energetic Perspective
Publisher: American Meteorological Society
Abstract: his paper investigates the dynamical processes through which the Tibetan Plateau (TP) influences the East Asian summer monsoon (EASM) within the framework of the moist static energy (MSE) budget, using both observations ...
Tropical and Extratropical Controls of Gulf of California Surges and Summertime Precipitation over the Southwestern United States
Publisher: American Meteorological Society
Abstract: n this study ERA-Interim data are used to study the influence of Gulf of California (GoC) moisture surges on the North American monsoon (NAM) precipitation over Arizona and western New Mexico (AZWNM), as well as the ...
Principal Component Analysis of the Summertime Winds over the Gulf of California: A Gulf Surge Index
Publisher: American Meteorological Society
Abstract: A principal component analysis of the summertime near-surface Quick Scatterometer (QuikSCAT) winds is used to identify the leading mode of synoptic-scale variability of the low-level flow along the Gulf of California during ...
Eddy-Mediated Regime Transitions in the Seasonal Cycle of a Hadley Circulation and Implications for Monsoon Dynamics
Publisher: American Meteorological Society
Abstract: In a simulation of seasonal cycles with an idealized general circulation model without a hydrologic cycle and with zonally symmetric boundary conditions, the Hadley cells undergo transitions between two regimes distinguishable ...
On the Role of the African Topography in the South Asian Monsoon
Publisher: American Meteorological Society
Abstract: he Somali jet, a strong low-level cross-equatorial flow concentrated in a narrow longitudinal band near the coast of Somalia, is a key feature of the South Asian monsoon (SAM) circulation. Previous work has emphasized the ...
Response of Monsoon Rainfall to Changes in the Latitude of the Equatorward Coastline of a Zonally Symmetric Continent
Publisher: American Meteorological Society
Coupled High-Latitude Climate Feedbacks and Their Impact on Atmospheric Heat Transport
Publisher: American Meteorological Society
Abstract: AbstractThe response of atmospheric heat transport to anthropogenic warming is determined by the anomalous meridional energy gradient. Feedback analysis offers a characterization of that gradient and hence reveals how ...
Effects of Rotation Rate and Seasonal Forcing on the ITCZ Extent in Planetary Atmospheres
Publisher: American Meteorological Society
Abstract: he authors study a wide range of atmospheric circulations with an idealized moist general circulation model to evaluate the mechanisms controlling intertropical convergence zone (ITCZ) migrations. They employ a zonally ...
Atmospheric Eddies Mediate Lapse Rate Feedback and Arctic Amplification
Publisher: American Meteorological Society
Abstract: AbstractProjections of amplified climate change in the Arctic are attributed to positive feedbacks associated with the retreat of sea ice and changes in the lapse rate of the polar atmosphere. Here, a set of idealized ...