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RISBuilding Blocks of Tropical Diabatic Heating
Publisher: American Meteorological Society
Abstract: Rotated EOF analyses are used to study the composition and variability of large-scale tropical diabatic heating profiles estimated from eight field campaigns. The results show that the profiles are composed of a pair of ...
Bi-modal Structure and Variability of Large-Scale Diabatic Heating in the Tropics
Publisher: American Meteorological Society
Abstract: Tropical diabatic heating profiles estimated using sounding data from eight field campaigns were diagnosed to document their common and prevailing structure and variability that are relevant to the large-scale circulation. ...
On the Relationship between Uncertainties in Tropical Divergence and the Hydrological Cycle in Global Models
Publisher: American Meteorological Society
Abstract: survey of tropical divergence from three GCMs, three global reanalyses, and four in situ soundings from field campaigns shows the existence of large uncertainties in the ubiquity of shallow divergent circulation as well ...
Moist Thermodynamics of the Madden–Julian Oscillation in a Cloud-Resolving Simulation
Publisher: American Meteorological Society
Abstract: he moist thermodynamic processes that determine the time scale and energy of the Madden?Julian oscillation (MJO) are investigated using moisture and eddy available potential energy budget analyses on a cloud-resolving ...
Ocean Warming and Late-Twentieth-Century Sahel Drought and Recovery
Publisher: American Meteorological Society
Abstract: The influences of decadal Indian and Atlantic Ocean SST anomalies on late-twentieth-century Sahel precipitation variability are investigated. The results of this regional modeling study show that the primary causes of the ...
Development of a Coupled Regional Model and Its Application to the Study of Interactions between the West African Monsoon and the Eastern Tropical Atlantic Ocean
Publisher: American Meteorological Society
Abstract: A regional ocean?atmosphere coupled model is developed for climate variability and change studies. The model allows dynamic and thermodynamic interactions between the atmospheric boundary layer and an ocean mixed layer ...
Influence of Surface Processes over Africa on the Atlantic Marine ITCZ and South American Precipitation
Publisher: American Meteorological Society
Abstract: Previous studies show that the climatological precipitation over South America, particularly the Nordeste region, is influenced by the presence of the African continent. Here the influence of African topography and surface ...
Dynamics of the West African Monsoon Jump
Publisher: American Meteorological Society
Abstract: The observed abrupt latitudinal shift of maximum precipitation from the Guinean coast into the Sahel region in June, known as the West African monsoon jump, is studied using a regional climate model. Moisture, momentum, ...
Thermodynamics of the Madden–Julian Oscillation in a Regional Model with Constrained Moisture
Publisher: American Meteorological Society
Abstract: o identify the main thermodynamic processes that sustain the Madden?Julian oscillation (MJO), an eddy available potential energy budget analysis is performed on a regional model simulation with moisture constrained by ...
Interbasin Differences in the Relationship between SST and Tropical Cyclone Intensification
Publisher: American Meteorological Society
Abstract: ABSTRACTSea surface temperature (SST) is one of the most important parameters for tropical cyclone (TC) intensification. Here, it is shown that the relationship between SST and TC intensification varies considerably from ...