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Large Eddy Simulation Of Cirrus Clouds
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721973736 Total Pages :308 pages Book Rating :4.9/5 (737 download)
Book Synopsis Large Eddy Simulation of Cirrus Clouds by : National Aeronautics and Space Administration (NASA)
Download or read book Large Eddy Simulation of Cirrus Clouds written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-27 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Regional Atmospheric Modeling System (RAMS) with mesoscale interactive nested-grids and a Large-Eddy Simulation (LES) version of RAMS, coupled to two-moment microphysics and a new two-stream radiative code were used to investigate the dynamic, microphysical, and radiative aspects of the November 26, 1991 cirrus event. Wu (1998) describes the results of that research in full detail and is enclosed as Appendix 1. The mesoscale nested grid simulation successfully reproduced the large scale circulation as compared to the Mesoscale Analysis and Prediction System's (MAPS) analyses and other observations. Three cloud bands which match nicely to the three cloud lines identified in an observational study (Mace et al., 1995) are predicted on Grid #2 of the nested grids, even though the mesoscale simulation predicts a larger west-east cloud width than what was observed. Large-eddy simulations (LES) were performed to study the dynamical, microphysical, and radiative processes in the 26 November 1991 FIRE 11 cirrus event. The LES model is based on the RAMS version 3b developed at Colorado State University. It includes a new radiation scheme developed by Harrington (1997) and a new subgrid scale model developed by Kosovic (1996). The LES model simulated a single cloud layer for Case 1 and a two-layer cloud structure for Case 2. The simulations demonstrated that latent heat release can play a significant role in the formation and development of cirrus clouds. For the thin cirrus in Case 1, the latent heat release was insufficient for the cirrus clouds to become positively buoyant. However, in some special cases such as Case 2, positively buoyant cells can be embedded within the cirrus layers. These cells were so active that the rising updraft induced its own pressure perturbations that affected the cloud evolution. Vertical profiles of the total radiative and latent heating rates indicated that for well developed, deep, and active cirrus clouds, radiative cooling and latent he...
Book Synopsis Large Eddy Simulation of Complex Engineering and Geophysical Flows by : Boris Galperin
Download or read book Large Eddy Simulation of Complex Engineering and Geophysical Flows written by Boris Galperin and published by Cambridge University Press. This book was released on 1993-11-26 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originally published in 1993, this book was the first to offer a comprehensive review of large eddy simulations (LES) - the history, state of the art, and promising directions for research. Among topics covered are fundamentals of LES; LES of incompressible, compressible, and reacting flows; LES of atmospheric, oceanic, and environmental flows; and LES and massivelt parallel computing. The book grew out of an international workshop that, for the first time, brought together leading researchers in engineering and geophysics to discuss developments and applications of LES models in their respective fields. It will be of value to anyone with an interest in turbulence modelling.
Download or read book Cirrus written by David K. Lynch and published by Oxford University Press. This book was released on 2002-01-24 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cirrus clouds are high, thin, tropospheric clouds composed predominately of ice. In the last ten years, considerable work has shown that cirrus is widespread--more common than previously believed--and has a significant impact on climate and global change. As the next generation weather satellites are being designed, the impact of cirrus on remote sensing and the global energy budget must be recognized and accommodated. This book, the first to be devoted entirely to cirrus clouds, captures the state of knowledge of cirrus and serves as a practical handbook as well. Each chapter is based on an invited review talk presented at Cirrus, a meeting hosted by the Optical Society of America and co-sponsored by the American Geophysical Union and the American Meteorological Society. All aspects of cirrus clouds are covered, an approach that reaches into diverse fields. Topics include: the definition of cirrus, cirrus climatologies, nucleation, evolution and dissipation, mixed-phase thermodynamics, crystallinity, orientation mechanisms, dynamics, scattering, radiative transfer, in situ sampling, processes that produce or influence cirrus (and vice versa), contrails, and the influence of cirrus on climate.
Book Synopsis Large-eddy Simulations of Warm Cumulus Clouds by : J. R. M. Pasquier
Download or read book Large-eddy Simulations of Warm Cumulus Clouds written by J. R. M. Pasquier and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Large Eddy Simulations of Arctic Stratus Clouds by : Thomas Daniel Pleavin
Download or read book Large Eddy Simulations of Arctic Stratus Clouds written by Thomas Daniel Pleavin and published by . This book was released on 2013 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cirrus written by David K. Lynch and published by Oxford University Press, USA. This book was released on 2002 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text, devoted entirely to cirrus clouds, captures the state of knowledge of cirrus clouds and serves as a practical handbook as well.
Book Synopsis Cloud Systems, Hurricanes, and the Tropical Rainfall Measuring Mission (TRMM) by : Wei-Kuo Tao
Download or read book Cloud Systems, Hurricanes, and the Tropical Rainfall Measuring Mission (TRMM) written by Wei-Kuo Tao and published by Springer. This book was released on 2015-03-30 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a tribute to a pioneer in tropical meteorology research, Dr. Joanne Simpson. It is a recollection of some of the high points of her career, from her fifty years of investigating hurricanes and clouds to her management of the crutial and highly successful TRMM project (Tropical Rainfall Measuring Mission), a joint mission between the NASA and the Japan Aerospace Exploration Agency (JAXA).
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mesoscale Meteorological Modeling by : Roger A Pielke Sr
Download or read book Mesoscale Meteorological Modeling written by Roger A Pielke Sr and published by Academic Press. This book was released on 2013-10-08 with total page 743 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 3rd edition of Mesoscale Meteorological Modeling is a fully revised resource for researchers and practitioners in the growing field of meteorological modeling at the mesoscale. Pielke has enhanced the new edition by quantifying model capability (uncertainty) by a detailed evaluation of the assumptions of parameterization and error propagation. Mesoscale models are applied in a wide variety of studies, including weather prediction, regional and local climate assessments, and air pollution investigations. - Broad expansion of the concepts of parameterization and parameterization methodology - Addition of new modeling approaches, including modeling summaries and summaries of data sets - All-new section on dynamic downscaling
Book Synopsis Controlling Entrainment in Large-eddy Simulation of Stratocumulus Clouds by : Eckhard Kadasch
Download or read book Controlling Entrainment in Large-eddy Simulation of Stratocumulus Clouds written by Eckhard Kadasch and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling Aircraft Contrails and Emission Plumes for Climate Impacts by : Alexander Dean Naiman
Download or read book Modeling Aircraft Contrails and Emission Plumes for Climate Impacts written by Alexander Dean Naiman and published by Stanford University. This book was released on 2011 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aircraft emissions lead to contrails and change cloud coverage in the upper troposphere/lower stratosphere, but their quantitative impact on climate is highly uncertain. As environmental policy turns toward regulating anthropogenic climate change components, it will be necessary to improve quantification of the climate impacts of aviation. Toward this end, we present two models of aircraft emissions. The first model is a large eddy simulation (LES) with three-dimensional, eddy-resolving flow physics and ice deposition/sublimation microphysics. Modeled ice properties, cloud optical depths, and contrail width growth rates are consistent with observational field studies. A series of sensitivity cases shows the effect of various parameters over twenty minutes of simulation time. The analysis focuses on properties such as contrail optical depth and cross-sectional width that are relevant to climate impacts. Vertical wind shear is found to have the strongest effect on these properties through the kinematic spreading of the contrail. In cases with no shear, optical depth is most sensitive to aircraft type and ambient humidity. One model parameter, the effective emission index of ice crystals, is also found to affect optical depth. A subset of the LES cases is run for two hours of simulation time to approach the scale of dynamical time steps modeled by global climate simulations. These cases use more realistic ice microphysics, including sedimentation, and forced ambient turbulence, both of which are processes that control contrail development at late times. The second model is a simple, low cost parameterization of aircraft plume dynamics, intended to be used as a subgrid plume model (SPM) within large scale atmospheric simulations. The SPM provides basic plume cross-section time advancement that has been used as a dilution model within a coupled global atmosphere-ocean climate simulation to study the effects of aviation on air quality and climate. Comparison to the twenty-minute and two-hour LES results demonstrates that the SPM captures important plume development characteristics under the effect of vertical shear and atmospheric turbulence.
Book Synopsis Mesoscale Meteorological Modeling by : Roger A. Pielke
Download or read book Mesoscale Meteorological Modeling written by Roger A. Pielke and published by Academic Press. This book was released on 2002 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition provides an update of the field of mesoscale atmospheric modeling. The topic of mesoscale modeling is developed from basic concepts in atmospheric physics. New numerical and analytical tools are introduced. Problem sets are provided to test the comprehension of the material introduced in the text.
Book Synopsis Physics and Modelling of Wind Erosion by : Yaping Shao
Download or read book Physics and Modelling of Wind Erosion written by Yaping Shao and published by Springer Science & Business Media. This book was released on 2000-11-30 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive summary of the recent developments in wind-erosion research and a clear outline of its future directions. The physics of wind-erosion, from particle entrainment to transport and deposition, is described with rigor from the viewpoints of fluid dynamics and soil physics. The techniques for quantitative wind-erosion prediction through computational modelling constitutes a unique feature of this book in contrast to others published in the same field. For the first time, wind-erosion has been considered systematically as a multidisciplinary subject. The author has advocated the development of integrated wind-erosion modelling systems which couple dynamic models for the atmosphere and land surface with spatially distributed data for land-surface conditions. The successful applications of such a system have demonstrated its usefulness in wind-erosion assessment and prediction on regional to continental scales. This book offers a valuable reference point for researchers and postgraduate students engaged in wind-erosion related studies, ranging from global climate change to atmospheric aerosols, dust storms, air quality, and land conservation.
Book Synopsis Programs and Plans by : Environmental Research Laboratories (U.S.)
Download or read book Programs and Plans written by Environmental Research Laboratories (U.S.) and published by . This book was released on 1994 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Large-eddy Simulation of Turbulence in the Free Atmosphere and Behind Aircraft by : Ulrich Schumann
Download or read book Large-eddy Simulation of Turbulence in the Free Atmosphere and Behind Aircraft written by Ulrich Schumann and published by . This book was released on 1996 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the Fourth Atmospheric Radiation Measurement (ARM) Science Team Meeting by :
Download or read book Proceedings of the Fourth Atmospheric Radiation Measurement (ARM) Science Team Meeting written by and published by . This book was released on 1994 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Clouds and Their Climatic Impact by : Sylvia Sullivan
Download or read book Clouds and Their Climatic Impact written by Sylvia Sullivan and published by John Wiley & Sons. This book was released on 2023-12-19 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clouds and Their Climatic Impacts Clouds are an influential and complex element of Earth’s climate system. They evolve rapidly in time and exist over small spatial scales, but also affect global radiative balance and large-scale circulations. With more powerful models and extensive observations now at our disposal, the climate impact of clouds is receiving ever more research attention. Clouds and Their Climatic Impacts: Radiation, Circulation, and Precipitation presents an overview of our current understanding on various types of clouds and cloud systems and their multifaceted role in the radiative budget, circulation patterns, and rainfall. Volume highlights include: Interactions of aerosol with both liquid and ice clouds Surface and atmospheric cloud radiative feedbacks and effects Arctic, extratropical, and tropical clouds Cloud-circulation coupling at global, meso, and micro scales Precipitation efficiency, phase, and measurements The role of machine learning in understanding clouds and climate The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.
