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Ice Initiation And Ice Multiplication Processes In A Warm Based Precipitating Cumulus Cloud Model
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Book Synopsis Ice Initiation and Ice Multiplication Processes in a Warm-based Precipitating Cumulus Cloud Model by : Jiming Sun
Download or read book Ice Initiation and Ice Multiplication Processes in a Warm-based Precipitating Cumulus Cloud Model written by Jiming Sun and published by . This book was released on 2008 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 1989 with total page 1134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Precipitation Enhancement by : Roscoe Braham
Download or read book Precipitation Enhancement written by Roscoe Braham and published by Springer. This book was released on 2015-03-30 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the outcome of a workshop held at Park City, Utah, 23-25 May, 1984. It is a collection of papers focusing focuses on physics of precipitation formation in clouds and the response of clouds to glaciogenic seeding. This book documents the debates and discussions that surrounded the topic of glaciogenic seeding during the time of the workshop. It is interesting as a historical evidence of the scientific progress of that time.
Book Synopsis The Spread of Ice in Cumulus Clouds by : Raymond Wexler
Download or read book The Spread of Ice in Cumulus Clouds written by Raymond Wexler and published by . This book was released on 1967 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ice Formation and Evolution in Clouds and Precipitation by : Darrel Baumgardner
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.
Book Synopsis An examination of double-plate ice crystals and the initiation of precipitation in continental cumulus clouds by : Roelof Theunis Bruintjes
Download or read book An examination of double-plate ice crystals and the initiation of precipitation in continental cumulus clouds written by Roelof Theunis Bruintjes and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book HIPLEX written by and published by . This book was released on 1984 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Light Scattering by Ice Crystals by : Kuo-Nan Liou
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.
Book Synopsis Towards an Improved Understanding of Ice Processes in Clouds and Precipitation by : Zhiyuan Jiang
Download or read book Towards an Improved Understanding of Ice Processes in Clouds and Precipitation written by Zhiyuan Jiang and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ice processes play an important role in both climate (e.g., Earths energy budget) and severe weather events (e.g., snowstorms and hailstorms), yet details in our understanding of them still need to be improved in order to improve their representation in numerical models and to better interpret measurements from advanced remote sensing instruments. This dissertation aims to improve our understanding of ice processes in clouds, either by simulating remote sensing observations of ice particles (e.g., radar scattering characteristics of ice particles at multiple frequencies), or by retrieving physical characteristics of ice particles from measurements. The study started by completing a scattering database of various ice particles at multiple radar frequencies. Scattering properties of ice particles are necessary in order to interpret the remote sensing observations. A comprehensive scattering library of ice particle scattering properties at multiple radar frequencies was produced including vapor-grown pristine ice of known habits (e.g., dendrites, plates and columns of known characteristics), and also collision-grown ice particles such as graupel and aggregates. However, hailstones are not included in the scattering library due to the lack of morphology. Their scattering properties using detailed shapes of real 3D hailstones collected during recent field campaigns were computed accurately and compared to the results of simplified shapes (i.e., spheroids). The results show that their scattering properties are different from the simplified spheroid counterparts often employed to model their scattering behavior, which explains why spheroids cannot reproduce the radar signatures of hailstones in many observed cases. In addition to hailstones, the shape of aggregates is difficult to characterize as well. Aggregates are so delicate that their shapes have to be measured while falling. In this work, an algorithm is developed to retrieve the bounding ellipsoidal shapes and their orientations of ice aggregates from multiple projections/images, adding additional complexities compared to the oft-assumed, but unsatisfactory and inaccurate, spheroidal shape. The aggregate shape distribution retrieved from Multi-Angle Snowflake Camera images can be used in future developments of ice particle aggregate microphysical schemes. The more complex 3D shapes retrieved from real ice particles raised questions about the practice of using single 2D projections of these complex-shaped ice particles for the evaluation of 3D ice particle physical properties from model output and/or retrieved from remote sensing measurements. A theoretical method to convert the bulk physical properties of 3D ice particles from numerical model outputs to the properties of particle 2D projections is developed, which can be used to compare model outputs directly with in-situ image measurements of ice particles.
Download or read book Cumulus Dynamics written by Chao Jih-Ping and published by . This book was released on 1969 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theoretical Experiments on Cumulus Dynamics and Glaciation by : Lloyd Randall Koenig
Download or read book Theoretical Experiments on Cumulus Dynamics and Glaciation written by Lloyd Randall Koenig and published by . This book was released on 1979 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mixed-Phase Clouds by : Constantin Andronache
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
Book Synopsis Ice Multiplication Processes in West Texas Convective Clouds by : Derek Scott Frey
Download or read book Ice Multiplication Processes in West Texas Convective Clouds written by Derek Scott Frey and published by . This book was released on 1989 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Simulating Mixed-phase Arctic Stratus Clouds by :
Download or read book Simulating Mixed-phase Arctic Stratus Clouds written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of Arctic mixed-phase clouds on radiation and the Arctic climate is well known. However, the development of mixed-phase cloud parameterization for use in large scale models is limited by lack of both related observations and numerical studies using multidimensional models with advanced microphysics that provide the basis for understanding the relative importance of different microphysical processes that take place in mixed-phase clouds. To improve the representation of mixed-phase cloud processes in the GISS GCM we use the GISS single-column model coupled to a bin resolved microphysics (BRM) scheme that was specially designed to simulate mixed-phase clouds and aerosol-cloud interactions. Using this model with the microphysical measurements obtained from the DOE ARM Mixed-Phase Arctic Cloud Experiment (MPACE) campaign in October 2004 at the North Slope of Alaska, we investigate the effect of ice initiation processes and Bergeron-Findeisen process (BFP) on glaciation time and longevity of single-layer stratiform mixed-phase clouds. We focus on observations taken during October 9th-10th, which indicated the presence of a single-layer mixed-phase clouds. We performed several sets of 12-hour simulations to examine model sensitivity to different ice initiation mechanisms and evaluate model output (hydrometeors concentrations, contents, effective radii, precipitation fluxes, and radar reflectivity) against measurements from the MPACE Intensive Observing Period. Overall, the model qualitatively simulates ice crystal concentration and hydrometeors content, but it fails to predict quantitatively the effective radii of ice particles and their vertical profiles. In particular, the ice effective radii are overestimated by at least 50%. However, using the same definition as used for observations, the effective radii simulated and that observed were more comparable. We find that for the single-layer stratiform mixed-phase clouds simulated, process of ice phase initiation due to freezing of supercooled water in both saturated and subsaturated (w.r.t. water) environments is as important as primary ice crystal origination from water vapor. We also find that the BFP is a process mainly responsible for the rates of glaciation of simulated clouds. These glaciation rates cannot be adequately represented by a water-ice saturation adjustment scheme that only depends on temperature and liquid and solid hydrometeors contents as is widely used in bulk microphysics schemes and are better represented by processes that also account for supersaturation changes as the hydrometeors grow.
Book Synopsis Snow and Climate by : Richard L. Armstrong
Download or read book Snow and Climate written by Richard L. Armstrong and published by Cambridge University Press. This book was released on 2008-04-24 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the prevailing state of snow-climate science for researchers and advanced students.
Book Synopsis A Short Course in Cloud Physics by : M.K. Yau
Download or read book A Short Course in Cloud Physics written by M.K. Yau and published by Elsevier. This book was released on 1996-05-15 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers essential parts of cloud and precipitation physics and has been extensively rewritten with over 60 new illustrations and many new and up to date references. Many current topics are covered such as mesoscale meteorology, radar cloud studies and numerical cloud modelling, and topics from the second edition, such as severe storms, precipitation processes and large scale aspects of cloud physics, have been revised. Problems are included as examples and to supplement the text.
Book Synopsis Simulating Mixed-phase Arctic Stratus Clouds by :
Download or read book Simulating Mixed-phase Arctic Stratus Clouds written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of Arctic mixed-phase clouds on radiation and the Arctic climate is well known. However, the development of mixed-phase cloud parameterization for use in large scale models is limited by lack of both related observations and numerical studies using multidimensional models with advanced microphysics that provide the basis for understanding the relative importance of different microphysical processes that take place in mixed-phase clouds. To improve the representation of mixed-phase cloud processes in the GISS GCM we use the GISS single-column model coupled to a bin resolved microphysics (BRM) scheme that was specially designed to simulate mixed-phase clouds and aerosol-cloud interactions. Using this model with the microphysical measurements obtained from the DOE ARM Mixed-Phase Arctic Cloud Experiment (MPACE) campaign in October 2004 at the North Slope of Alaska, we investigate the effect of ice initiation processes and Bergeron-Findeisen process (BFP) on glaciation time and longevity of single-layer stratiform mixed-phase clouds. We focus on observations taken during 9th-10th October, which indicated the presence of a single-layer mixed-phase clouds. We performed several sets of 12-h simulations to examine model sensitivity to different ice initiation mechanisms and evaluate model output (hydrometeors concentrations, contents, effective radii, precipitation fluxes, and radar reflectivity) against measurements from the MPACE Intensive Observing Period. Overall, the model qualitatively simulates ice crystal concentration and hydrometeors content, but it fails to predict quantitatively the effective radii of ice particles and their vertical profiles. In particular, the ice effective radii are overestimated by at least 50%. However, using the same definition as used for observations, the effective radii simulated and that observed were more comparable. We find that for the single-layer stratiform mixed-phase clouds simulated, process of ice phase initiation due to freezing of supercooled water in both saturated and undersaturated (w.r.t. water) environments is as important as primary ice crystal origination from water vapor. We also find that the BFP is a process mainly responsible for the rates of glaciation of simulated clouds. These glaciation rates cannot be adequately represented by a water-ice saturation adjustment scheme that only depends on temperature and liquid and solid hydrometeors contents as is widely used in bulk microphysics schemes and are better represented by processes that also account for supersaturation changes as the hydrometeors grow.
