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Showing 1 to 20 of 34 for “"anticyclone"”.
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On the structure and dynamics of the Asian monsoon anticyclone
… to explain certain features of the upper level anticyclone, like the zonal scale or time dependence, a comprehensive theory combining these characteristics is still lacking. We re-visited the steady and linear 2D monsoon model proposed by Gill and Matsuno, which potentially captures the …
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A vorticity-based analysis of the spatial and temporal characteristics of the Beaufort Anticyclone
Made available in DSpace on 2011-01-21T22:51:36Z (GMT). No. of bitstreams: 2 Gleicher_Kirstin.pdf: 3580007 bytes, checksum: 034248fb612ccbfd7b83d606be1c2407 (MD5) license.txt: 4066 bytes, checksum: d0e8157a3dee2da2612f72dd723bbec5 (MD5)
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Eddy shedding from non-axisymmetric, divergent anticyclones with application to the Asian Monsoon anticyclone
… of vortices from the directly forced monsoon anticyclone. The vortices, or eddies, are capable of drifting to the far field to establish a circulation which extends far beyond the local forcing. This thesis provides a dynamical explanation for the generation of eddies near the center of a …
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Slope/shelf circulation and cross-slope/shelf transport out of a bay driven by eddies from the open ocean
… (PV) perturbations in opposite directions in anticyclone-induced interactions but in the same direction in cyclone-induced interactions, resulting in dramatic differences in the two kinds of interactions. The topographic waves become more nonlinear near the western(eastern if in the Northern …
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Spontaneous tropical cyclogenesis in a cloud revolving numerical model
… to the growing system. In fact, a cold surface anticyclone exists near the center for much of the second step. It is not until potential vorticity anomalies advect down to the surface that the final step, low-level cyclone intensification, creates a classical hurricane structure. Potential …
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Slope/shelf circulation and cross-slope/shelf transport out of a bay driven by eddies from the open ocean
… (PV) perturbations in opposite directions in anticyclone-induced interactions but in the same direction in cyclone-induced interactions, resulting in dramatic differences in the two kinds of interactions. The topographic waves become more nonlinear near the western(eastern if in the Northern …
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Tropospheric Ozone over the Middle East and Its Interannual Variability: An Integrated Analysis with Satellite Observations and a Global Chemical Transport Model
… 2005. This study demonstrates that the Arabian anticyclone in the mid-troposphere over the Middle East plays a critical role in facilitating the buildup of ozone. Additionally, the South Asian High in the upper troposphere helps transport ozone from the Asian monsoon region. Transport from Asia …
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Water vapour transport from the South Atlantic and Indian Oceans and summer rainfall in southern Africa
… and latitudinal position of the South Atlantic anticyclone/modulations of the westerly flow that penetrates from the tropical Atlantic, contribute the most about 25% and 11% of the variance explained respectively), in January-February to variability in moisture advection from the South/tropical …
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Interaction of an eddy with a continental slope
… transport and the evolution of both the original anticyclone and the topographic eddy. Since a cyclone is trapped at the slope and eventually moves on to the slope, it is most effective in causing perturbation on the shelf and slope. The responses on the shelf and slope are mainly wavelike with …
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Eddy generation at a convex corner by a coastal current in a rotating system
… corner, immediately downstream of the corner an anticyclone grew in the surface layer for an angle of greater than 40 degrees. Varying the initial condition of the flow or the depth of the lower layer did not noticeably affect the gyre's properties except for its growth speed, which was greater …
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The influence of the Agulhas Current on two South African extreme weather events
… heat low, advection of warm moist air around an anticyclone in the South-west Indian Ocean and an approaching midlevel westerly trough. NCEP derived moisture flux diagrams and back trajectories of air parcels constructed from ECMWF data suggest that the Agulhas Current region was a major source …
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Layer-layer interactions in atmospheric, cryospheric, and stellar dynamics
… temperatures above the Asian summer monsoon anticyclone is found to obey quasigeostrophic theory. Lower stratospheric monsoon temperatures from both radiosondes and reanalysis have been cooling over the observational record, suggesting enhanced upwelling through the monsoon anticyclone, and …
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Wind shear and differential upwelling along the South Western tip of Africa
… the pressure gradient between the South Atlantic Anticyclone and a summertime interior low, become modulated through interactions with the circumpolar jet stream. Low level winds accelerate over portions of the southern Benguela current region through deflections forced by three pronounced capes, …
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The Influence of the North Atlantic Subtropical High on Atmospheric Rivers Over the Eastern United States
… mid-latitude troughs. The NASH, a semi-permanent anticyclone over the subtropical North Atlantic Ocean, has been shown to be significantly influential on precipitation variability over the southeastern United States. A self-organizing map (SOM) was trained on a 4 x 3 regular grid over 250 …
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When an eddy encounters shelf-slope topography
… to an eddy diameter, a slope can prevent an anticyclone from reaching the shelfbreak by shutting down such radiation. For narrow continental slopes, the interaction repeatedly produces dipoles, whose cyclonic halves contain shelf-slope water stacked over eddy water. The formation of such …
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MECHANISMS FOR THE EXISTENCE OF DIAGONAL SOUTHERN HEMISPHERE CONVERGENCE ZONES
… distribution. This leads to a strong subtropical anticyclone over the southeast Pacific that transports and supplies moisture to the SPCZ. Convection is triggered when the dynamical forcing from Rossby waves is present.
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Seasonal and interannual variability of wind-driven upwelling at Lüderitz, Namibia
… shift in the position of the South Atlantic Anticyclone in winter combined with a pressure increase over the continent.
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When an eddy encounters shelf-slope topography
… to an eddy diameter, a slope can prevent an anticyclone from reaching the shelfbreak by shutting down such radiation. For narrow continental slopes, the interaction repeatedly produces dipoles, whose cyclonic halves contain shelf-slope water stacked over eddy water. The formation of such …
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Interannual variability of summer precipitation in Texas and its implication to summer drought
… The aforementioned chain-reaction of upper-level anticyclone influences can be understood in the context of CIN.
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Intra-seasonal oscillations of convection over southern Africa
… with strong ridging of the South Atlantic Anticyclone (SAA) causes the south-easterly advection of moisture from the southern Mozambique Channel and over the warm Agulhas Current into South Africa. Post-wet phase anomaly composites do not show much similarity with pre-cursor anomaly …
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