A detailed diagnostic examination of the warm frontal region ahead of the surface cyclone in Intensive Observation Period (IOP) 9 of the Genesis of Atlantic Lows Experiment (GALE) is conducted. Data for this study consists of normal synoptic observations and special GALE observations, analyzed by the Navy Operational Regional Analysis and Predictions System (NORAPS), which uses optimal interpolation. These analyses are enhanced by hand-drawn fronts and cloud outlines from Geostationary Operational Environmental Satellite (GOES) imagery. Symmetric stability is evaluated on cross-sectional analyses of pseudo-absolute momentum and equivalent potential temperature, and reveal conditions of moist symmetric neutrality in the warm frontal region. The planetary boundary layer theta budget is examined to determine what processes heated and moistened the region. Surface heat and moisture fluxes were found to contribute to significant theta increases only in the early stages of development. Upper-level divergence and surface frontogenesis are studied to determine their contributions to forcing the warm frontal updraft. Results indicate that during the period of explosive development, upper-level forcing was unfavorable for development. Low-level frontogenetical forcing in the presence of symmetric neutrality was found to be strong enough to oppose this negative upper-level forcing to force rapid development. Meteorology, Explosive cyclogenesis, Theses.
|Statement||Dianne K. Crittenden|
|Contributions||Naval Postgraduate School (U.S.)|
|The Physical Object|
|Number of Pages||48|
Classical thermodynamics considers three main kinds of thermodynamic process by change in a system, cycles in a system, and flow processes. Defined by change in a system, a thermodynamic process is a passage of a thermodynamic system from an initial to a final state of thermodynamic initial and final states are the defining elements of the process. A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Pages in category "Thermodynamic processes" The following 30 pages are in this category, out of 30 total. This list may not reflect recent changes (). When examining thermodynamic processes some simplifying assumptions may be applied to help describe and analyse a given system. These simplifications can be viewed as 'ideal' thermodynamic processes and include adiabatic, isenthalpic, isentropic, isobaric, isochoric, isothermal, isentropic, polytropic and reversible processes. This article provides a brief .
Lecture5 Thermodynamic Systems and Processes Last Time State Functions Limiting Cases of Path Dependendent Processes James Joule, Hero of the First Law First Law Consider again the classical experiment that illustrates the equivalent eﬀects of adding heat to a system and doing an equivalent amount of work on a system. FTT can be used to optimize various processes and cycles, such as gas turbine cycle , absorption thermodynamic cycles , two-heat-reservoir . Thermodynamic system A thermodynamic system is defined as a quantity of matter of fixed mass and identity on which attention is focused for study. Everything external to the system is the surroundings, and the system is separated from the surroundings by the system boundaries. These boundaries may be either movable or fixed. Basic Concepts of Thermodynamics. This note covers the following topics: Thermal Sciences, Dimensions and Units, Thermodynamic Systems, Thermodynamic Properties of Systems, Pressure, Temperature, State and Equilibrium, Thermodynamic Processes, Pure Substances, Calculation of the Stored Energy, Specific Heats: Ideal Gases, Solids and Liquids, First Law of .
6. 3 Representation of Thermodynamic Processes in coordinates. It is often useful to plot the thermodynamic state transitions and the cycles in terms of temperature (or enthalpy) and entropy,,, rather than,.The maximum temperature is often the constraint on the process and the enthalpy changes show the work done or heat received directly, so that plotting in terms of these . Therefore, it is difficult to determine the part of cloud variations that results from a change in the dynamics from the part that may result from the temperature change itself. This study proposes a simple framework to unravel the dynamic and non-dynamic (referred to as thermodynamic) components of the cloud response to climate by: In his famous book ‘What is life?', Erwin Schrödinger opened the debate on how life could be envisioned from the thermodynamic standpoint (Schrödinger, ).Ilyia Prigogine (Prigogine, ) then made an important contribution by pioneering the application of nonequilibrium thermodynamics to biology, underlying modern developments of biological flux Cited by: The heat change (ΔH) is negative in heat-releasing processes enthalpy (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of .