Download or read book Growth of Ice Crystals by Diffusion in Mixed Phase Clouds written by Kiran Sonnad and published by . This book was released on 1998 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mixed Phase Clouds written by Constantin Andronache and published by Elsevier. This book was released on 2017-09-28 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mixed-Phase Clouds: Observations and Modeling presents advanced research topics on mixed-phase clouds. As the societal impacts of extreme weather and its forecasting grow, there is a continuous need to refine atmospheric observations, techniques and numerical models. Understanding the role of clouds in the atmosphere is increasingly vital for current applications, such as prediction and prevention of aircraft icing, weather modification, and the assessment of the effects of cloud phase partition in climate models. This book provides the essential information needed to address these problems with a focus on current observations, simulations and applications. Provides in-depth knowledge and simulation of mixed-phase clouds over many regions of Earth, explaining their role in weather and climate Features current research examples and case studies, including those on advanced research methods from authors with experience in both academia and the industry Discusses the latest advances in this subject area, providing the reader with access to best practices for remote sensing and numerical modeling
Download or read book Light Scattering by Ice Crystals written by Kuo-Nan Liou and published by Cambridge University Press. This book was released on 2016-10-06 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume outlines the fundamentals and applications of light scattering, absorption and polarization processes involving ice crystals.
Download or read book Practical Meteorology written by Roland Stull and published by Sundog Publishing, LLC. This book was released on 2018 with total page 942 pages. Available in PDF, EPUB and Kindle. Book excerpt: A quantitative introduction to atmospheric science for students and professionals who want to understand and apply basic meteorological concepts but who are not ready for calculus.
Download or read book Ice Particle Habit Effects On The Resilience Of Arctic Mixed Phase Stratus Clouds In One Dimensional Model Simulations written by Abhisek Das and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Arctic single layer mixed-phase clouds were studied using a one-dimensional model that incorporated the adaptive habit growth model for ice microphysics. The base case was from the Indirect and Semi-Direct Aerosol Campaign, and it was perturbed over a range of cloud temperatures, ice nuclei concentrations, and large-scale subsidence velocities, quantities upon which mixed-phase cloud glaciation timescales are dependent. The focus of the study was quantifying mixed-phase cloud glaciation timescale dependence on these three parameters. To this end, a metric of liquid cloud evolution based on liquid water path changes was developed and used to characterize mixed-phase cloud evolution towards glaciation. Dependence of the metric on cloud temperatures from -30°C to -5°C, ice nuclei concentrations from 0.10 L-1 to 30 L-1 in a diagnostic nucleation scheme, and strong to moderate (observed) to no subsidence, with both spherical and habit-dependent ice crystal growth, was investigated. Spherical and habit-dependent ice crystal growth led to different relationships between critical ice nuclei concentration, the ice nuclei concentration above which a mixed-phase cloud glaciates, and cloud average temperature and subsidence strength. For spherical ice crystal growth, the relationship between critical ice nuclei concentration and cloud average temperature is monotonic, with the critical ice nuclei concentration decreasing with decreasing cloud average temperature. With strengthening subsidence, the critical ice nuclei concentration decreases for every cloud average temperature. For habit-dependent ice crystal growth, the relationship with cloud average temperature is not monotonic because ice crystals develop dendritic and columnar habits near -15°C and -7°C, respectively. At these two temperatures ice crystals grow faster and deplete more supercooled liquid water, leading to deep local minima in critical ice nuclei concentrations around these two temperatures. As for spherical growth, critical ice nuclei concentrations decrease with increasing subsidence for habit-dependent ice crystal growth. Habit-dependent ice crystal growth coupled with cloud average temperature, critical ice nuclei concentration, and subsidence strength lead to significant changes in Arctic mixed-phase cloud lifetimes.
Download or read book Field Laboratory Observations of Ice Crystal Growth from the Vapor written by J. Hallett and published by . This book was released on 1965 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The temperature dependence of the habit of ice crystals growing in a water vapor diffusion chamber is related to the growth rate of ice crystals in a supercooled cloud. The rates of growth occurring between -4 and -6C as needles or between -12 and -16C as dendrites may be in excess of those at intermediate temperatures by as much as a factor of 100. The effect of seeding a supercooled cloud will therefore depend critically on its temperature. Growth of crystals at large supersaturation between -4 and -6C takes places as spikes growing along a direction 25(degrees) to the c axis. These crystals have been observed in the diffusion chamber, and also as frost near hot springs in Yellowstone Park. The molecular processes responsible for these habit changes are discussed.
Download or read book A Theoretical Investigation of the Growth Rates of Ice Crystals in Clouds written by Wusheng Ji and published by . This book was released on 1991 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shape temperature Relationship of Ice Crystals in Mixed phase Clouds Based on Observations with Polarimetric Cloud Radar written by Alexander Myagkov and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shape temperature Relationship of Ice Crystals in Mixed phase Clouds Based on Observations with Polarimetric Cloud Radar written by Alexander Myagkov and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanism of Ice Crystal Growth Habit and Shape Instability Development Below Water Saturation written by Gerald Douglass Swoboda and published by . This book was released on 1981 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ice phase process in supercooled clouds play dominant roles in development of updrafts and downdrafts as well as various forms of precipitation. In a supercooled cloud, an ice phase process begins normally with vapor diffusional growth of ice crystals. Consequently, the vapor diffusional growth of ice crystals is of importance in cloud physics. Starting from the concept of the wedge-shaped ice thermal diffusion chamber of Schaller and Fukuta, where ice crystals can be grown under a range of ice supersaturations at a constant temperature in quiescent, temperature-stratified air, and by considering design and operational limitations, a new wedge-shaped ice thermal diffusion chamber was designed and constructed for this study of ice crystal growth habit and shape instability. This chamber and supporting apparatus define an experimental system capable of adequately controlling the temperature and supersaturation fields around the growing crystal. In addition to the wedge-shaped chamber, apparatus defining this experimental system are the pre-chamber, ice crystal slide mechanism, lateral microscope slide mechanism, sample transfer device, and outer environmental chamber.
Download or read book Ice in the Summer Atmosphere written by Lloyd Randall Koenig and published by . This book was released on 1962 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics of Ice written by Victor F. Petrenko and published by OUP Oxford. This book was released on 1999-08-19 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ice is one of the most abundant and environmentally important materials on Earth, and its unique and intriguing physical properties present fascinating areas of study for a wide variety of researchers. This book is about the physics of ice, by which is meant the properties of the material itself and the ways in which these properties are interpreted in terms of water molecules and crystalline structure. Although ice has a simple crystal structure its hydrogen bonding results in unique properties, which continue to be the subject of active research. In this book the physical principles underlying the properties of ice are carefully developed at a level aimed at pure and applied researchers in the field. Important topics like current understandings of the electrical, mechanical, and surface properties, and the occurrence of many different crystalline phases are developed in a coherent way for the first time. An extensive reference list and numerous illustrations add to the usefulness and readability of the text.
Download or read book Ice Formation and Evolution in Clouds and Precipitation written by Darrel Baumgardner and published by . This book was released on 2018-03-09 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Ice crystals, with their myriad shapes, sizes and densities, play an important role in the formation, evolution and subsequent impact of ice and mixed-phase clouds on weather and climate. There are numerous pathways through which ice crystals nucleate, grow and dissipate. Although many of these are understood theoretically and have been simulated in the laboratory and cloud chambers, they are less well documented in natural clouds. The challenges of making measurements from moving platforms in an environment that is spatially inhomogenous and temporally unsteady, as well as sometimes at high altitudes and in clouds with icing potential makes these clouds difficult to observe. Nevertheless, the importance of ice clouds on climate and the hydrological cycle compels us to better understand ice processes through improved measurements over as broad of a temporal and geographical scale as possible. This monograph represents a collection of articles that do exactly that."-- Book jacket.
Download or read book The Formation of Ice Crystals written by Fordyce Eddy Tuttle and published by . This book was released on 1924 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Introduction to Clouds written by Ulrike Lohmann and published by Cambridge University Press. This book was released on 2016-06-23 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: An Introduction to Clouds provides a fundamental understanding of clouds, ranging from cloud microphysics to the large-scale impacts of clouds on climate. On the microscale, phase changes and ice nucleation are covered comprehensively, including aerosol particles and thermodynamics relevant for the formation of clouds and precipitation. At larger scales, cloud dynamics, mid-latitude storms and tropical cyclones are discussed leading to the role of clouds on the hydrological cycle and climate. Each chapter ends with problem sets and multiple-choice questions that can be completed online, and important equations are highlighted in boxes for ease of reference. Combining mathematical formulations with qualitative explanations of underlying concepts, this accessible book requires relatively little previous knowledge, making it ideal for advanced undergraduate and graduate students in atmospheric science, environmental sciences and related disciplines.
Download or read book The Slow Growth of Ice Crystals in Water written by Samuel C. Colbeck and published by . This book was released on 1992 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Growth Rate of Ice Crystals Formed from Frozen Solution Droplets written by Dixuan Rui and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: All cloud and climate models assume ice crystals formed from frozen water droplets are pure even though cloud and haze drops are never pure. Prior experiments show that, during the freezing of solution drops, phase separation into pure ice and a freeze-concentrated solution takes place, potentially affecting the freezing of a solution droplet and its subsequent growth as an ice crystal (Bogdan and Molina 2017). We present measurements of ice crystal growth from frozen sodium chloride (NaCl) solution drops in the button electrode levitation (BEL) diffusion chamber at temperatures between -61°C and -40°C. Measured scattering diffraction patterns show that concentrated solution droplets remain unfrozen with classical diffraction fringes until the droplets freeze. Upon freezing, the scattering patterns become complex within 0.1 seconds which is in contrast with frozen pure water particles, which retain liquid-like scattering patterns for about a minute. After freezing, solution particles initially grow as spherical-like crystals, and then transition to faster growth indicative of a morphological transformation (such as the development of branching arms, Harrington and Pokrifka 2024). The measurements indicate that ice formed from solution droplets grows differently and has higher growth rates than ice formed from pure water droplets. We use these results to develop a power-law based parameterization that can be included in cloud models.
