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Stationary Barotropic Flow Induced by a Mountain over a Tropical Belt
Publisher: American Meteorological Society
Abstract: Stationary solutions in the presence of bottom topography are computed for a tropical atmospheric belt. A primitive divergent barotropic model is assumed. An iterative time-averaging method proposed by Edelmann (1972b) is ...
An Investigation of the Equatorial Orographic–Dynamic Mechanism
Publisher: American Meteorological Society
Abstract: A barotropic model over an equatorial beta-plane is used to investigate the response when a uniform zonal current crosses an isolated hypothetical mountain centered at the equator. The bounded derivative initialization ...
An Extended Procedure for Implementing the Relative Operating Characteristic Graphical Method
Publisher: American Meteorological Society
Abstract: The functional relationship between the relative operating characteristic (ROC) and the economic value (EV) graphical methods have been exploited to develop a hybrid procedure called the extended ROC (EROC) method. The ...
Optimal Accuracy in Semi-Lagrangian Models
Publisher: American Meteorological Society
Abstract: A one-dimensional semi-implicit semi-Lagrangian (SISL) linear model and a nonlinear SISL global shallow-water model are employed to investigate the sensitivity of the solutions on (i) the order of interpolation applied at ...
Empirical Analysis of Intraseasonal Climate Variability over the Greater Horn of Africa
Publisher: American Meteorological Society
Abstract: This study examines the intraseasonal climate variability over the Greater Horn of Africa (GHA) during the rainy season of October?December (OND). The investigation is primarily based on empirical orthogonal function (EOF) ...
A Global Nonhydrostatic Semi-Lagrangian Atmospheric Model with Orography
Publisher: American Meteorological Society
Abstract: A global nonhydrostatic semi-implicit semi-Lagrangian (SISL) atmospheric model with orography has been developed. The height-based terrain-following σz coordinate of Gal-Chen and Somerville is used to incorporate the ...
Efficient Conservative Global Transport Schemes for Climate and Atmospheric Chemistry Models
Publisher: American Meteorological Society
Abstract: A computationally efficient mass-conservative transport scheme over the sphere is proposed and tested. The scheme combines a conservative finite-volume method with an efficient semi-Lagrangian scheme based on the dimension ...
Analysis of Mean Climate Conditions in Senegal (1971–98)
Publisher: American Meteorological Society
Abstract: This paper presents a GIS-based analysis of climate variability over Senegal, West Africa. It responds to the need for developing a climate atlas that uses local observations instead of gridded global analyses. Monthly ...
Simulated Physical Mechanisms Associated with Climate Variability over Lake Victoria Basin in East Africa
Publisher: American Meteorological Society
Abstract: A fully coupled regional climate, 3D lake modeling system is used to investigate the physical mechanisms associated with the multiscale variability of the Lake Victoria basin climate. To examine the relative influence of ...
A GCM Study of the Teleconnections between the Continental Climate of Africa and Global Sea Surface Temperature Anomalies
Publisher: American Meteorological Society
Abstract: In this case study the role of global SST anomaly forcing in promoting the extreme climatic conditions that prevailed in Africa during the years of 1950 and 1973 is examined. In 1950 abundant rainfall was observed over ...