Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"latent heating"”.
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Latent heating and mixing due to entrainment in tropical deep convection
Recent studies have noted the role of latent heating above the freezing level in reconciling Riehl and Malkus' Hot Tower Hypothesis (HTH) with evidence of diluted tropical deep convective cores. This study evaluates recent modifications to the HTH through Lagrangian trajectory analysis of deep …
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Effect of latent heating on mesoscale vortex development during extreme precipitation: Colorado, September 2013
… Cyclone, but developed through the release of latent heat from microphysical process. The Advanced Research Weather Research and Forecast (ARW) model was used to 1) produce a control simulation that properly represented the evolution and processes of interest during the event and 2) test the …
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Moist Baroclinic Instability and Macroturbulence of the Midlatitude Atmosphere
… dynamics. Two specific phenomena in which latent heating plays a key role and that are poorly understood form the central focus of this thesis. Past research has identified a special class of storm, dubbed the Diabatic Rossby Vortex (DRVs), which derives its energy from latent heating …
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The Genesis and Evolution of African Easterly Waves
… basic zonal flow with/without a parameterized latent heating. The method of eigenvalue-eigenfunction analysis is used. The analysis reveals that it is important to use a faithful representation of the structure of the basic flow as observed over the region of northwestern Africa. The kinetic …
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Convective structure and its evolution in tropical cyclones as observed by passive microwave sensors in relation to intensity change
… satellite overpass, suggesting a lag between latent heating at the time of overpass and the resultant intensification. Despite this, correlation is consistently less skillful for evaluations of intensity change with values at short time changes of around 0.3. The distribution of statistical …
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Modeling the impact of iIrrigation on precipitation over the Great Plains.
… the Great Plains by altering the partitioning of latent and sensible heating. An increase in latent heating from irrigation contributes to a cooler and more humid surface, which has competing impacts on convection. In this study, the Weather Research and Forecasting model was modified to simulate …
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Pulse de-icing for aircraft applications
… for multiple phases and materials, specific and latent heating effects, melt layer hydrodynamics, as well as boundary layer effects. To identify optimal de-icing strategies, we use our model to study the effects of heater thickness (50 µm < t_h < 1 mm), substrate electrical insulation thickness …
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Changes in atmospheric eddy length with the seasonal cycle and global warming
… seen in the reanalysis. To explore the effect of latent heating on the eddies, a modification to the static stability is used to calculate an effective Rossby radius. The effective Rossby radius is an improvement over the traditional dry Rossby radius in predicting the seasonal cycle of northern …
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Impacts of Congo Convection on Tropical Africa's circulation, rainfall and resources
… influencing the weather over the region through latent heating. The influence of Congo convection is short lived compared to that of nearby Indian and Atlantic Ocean monsoons, because of the relative small size and terrestrial nature of the Congo basin. Yet the influence is significant as …
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Understanding the Characteristics of Precipitation and Their Response to Climate Change
… dry decomposition, a positive contribution by latent heating is largely offset by a negative contribution from an increase in dry static stability. In the moist decomposition, changes in moist static stability play a key role. Second, I look at the power-law frequency distributions and fractal …
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Polar föhn winds and warming over the Larsen C Ice Shelf, Antarctica
… leeside foehn warming (isentropic drawdown, latent heating and sensible heating) are quantified using a novel method analysing back trajectories and MetUM 1.5 km model output. It is shown that, depending on the linearity of the flow regime and the humidity of the air mass, each mechanism can …
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Improving heat capture for power generation in coal gasification plants
… the effect of including both sensible and latent heating of steam in the composite curve. It is shown that including sensible heating allows for better thermal matching between the process and steam system which results in improving the overall efficiency while minimizing the capital cost. …
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Drought tolerance and implications for vegetation-climate interactions in the Amazon forest
… to affect climate through changing sensible and latent heat fluxes. We examine the effects of forest stress resistance on climate through coupled experiments of SiB3 in a GCM. In a single column model, we find evidence for a more active hydrologic cycle due to increased stress resistance. The …
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Dynamics of cloud-top generating cells in winter cyclones
… by high ice supersaturation (RHice > 150%) and latent heating rates frequently in excess of 2 K h-1 collocated with vertical velocity maxima. Precipitation mixing ratio maxima of > 0.15 g kg-1 were common within GCs in both the daytime and nighttime simulations. Second, the influence of …
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Investigation of the positive interaction between the primary and secondary circulation and the roles of different types of precipitation in tropical cyclone formation
… converging from large radii, and the release of latent heat concentrated near the circulation center then drives the overturning secondary circulation, increases the low-level moisture convergence, and intensifies the tangential circulation. We further examine the precipitation evolution during …