A Numerical Study Of Thunderstorm Electrification Initial Electrification And Thunderstorm Climatology

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A Numerical Study of Thunderstorm Electrification: Initial Electrification and Thunderstorm Climatology

Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis A Numerical Study of Thunderstorm Electrification: Initial Electrification and Thunderstorm Climatology by :

Download or read book A Numerical Study of Thunderstorm Electrification: Initial Electrification and Thunderstorm Climatology written by and published by . This book was released on 1991 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our purpose is to identify those atmospheric conditions that lead to thunderstorm electrification. We have collected aircraft and radar measurements of atmospheric parameters made during several recent intensive field studies, and we are modifying our thunderstorm model to make it more realistic. The radar measurements will be used as inputs to the model and we will attempt in-cloud microphysical, dynamical and electrical behavior in a range of atmospheric environments. As our simulations evolve, we will examine the relationships between atmospheric sounding parameters and subsequent electric field development and we will classify soundings in terms of parameters relevant for lightning production.

A Numerical Study of Thunderstorm Electrification

Author :
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (227 download)

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Download or read book A Numerical Study of Thunderstorm Electrification written by and published by . This book was released on 1994 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this research was to pursue further understanding of cloud electrification through three separate projects. First, radar observational data of New Mexico thunderstorm activity combined with a numerical thunderstorm model suggests that the degree of thunderstorm electrification depends on the time during which strong updrafts remain within the charging zone. Second, a simple numerical lightning model representing streamer propagation on a 2-D grid was developed. Realistic streamer paths evolve in the model and the conditions for IC and CG strokes are directly related to updraft velocity. Third, a simple cloud model was utilized to investigate factors influencing lightning frequency and its relationship to precipitation. Lightning and lightning frequency are shown to heavily depend on the depth of the charging region which is sensitive to vertical velocity.

Experimental Studies of Thunderstorm Electrification

Author : Donald R. Fitzgerald
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Experimental Studies of Thunderstorm Electrification by : Donald R. Fitzgerald

Download or read book Experimental Studies of Thunderstorm Electrification written by Donald R. Fitzgerald and published by . This book was released on 1976 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Airborne electric field sensing and computing systems have been developed and flown on C-130, F-100F, RF4C, and U-2 aircraft for studies of shower, cloud, and thunderstorm charge centers. Examples are given of the proper separation of field components and aircraft charge during thunderstorm penetrations and during direct lightning strikes to the test aircraft. Techniques have been employed for roll compensation of the aircraft-fixed field components so that real-time vector displays indicating the centroid of near-by charge concentrations are available for use in avoidance of probable lightning areas, or for use in selecting them to maximize the probability of a strike to test aircraft during lightning-aircraft interaction studies. The development of the storm electrical structure is directly related to details of the cloud water and ice distribution linked through the thermal and draft structure in the storm. Major features of the internal electrical pattern are often seen in data taken above, alongside, or at the surface. However, in accordance with electrostatic field theory, many of the fine structural details found within the storm are suppressed outside. The major vertical component field pattern is found to be one that could be produced by simple tilted dipolar charge structures. Depending on the physical conditions in different regions of the storm, the upper excess charge of the dipole may be either positive as generally reported from surface observations of the field, or it may be negative, as found in a number of the U-2 storm overflights accomplished in this project. (Author).

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 426 pages
Book Rating : 4.:/5 (319 download)

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Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Electrical Nature of Storms

Author : D. R. MacGorman
Publisher : Oxford University Press, USA
ISBN 13 : 9780195073379
Total Pages : 436 pages
Book Rating : 4.0/5 (733 download)

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Book Synopsis The Electrical Nature of Storms by : D. R. MacGorman

Download or read book The Electrical Nature of Storms written by D. R. MacGorman and published by Oxford University Press, USA. This book was released on 1998 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid progress during the last twenty years has created a host of new technologies for studying electrical storms, including lightning mapping systems, new radars, satellite sensors, and new ways of measuring electric field and particle charge. This book explains how these advances have revolutionized our understanding. The books provides substantial background material, making it accessible to a broad scientific audience.

Government Reports Annual Index

Author :
Publisher :
ISBN 13 :
Total Pages : 1688 pages
Book Rating : 4.:/5 (3 download)

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Book Synopsis Government Reports Annual Index by :

Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1688 pages. Available in PDF, EPUB and Kindle. Book excerpt:

A Modeling Study of Thunderstorm Electrification and Lightning Flash Rate

Author : Robert Solomon
Publisher :
ISBN 13 :
Total Pages : 112 pages
Book Rating : 4.:/5 (382 download)

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Book Synopsis A Modeling Study of Thunderstorm Electrification and Lightning Flash Rate by : Robert Solomon

Download or read book A Modeling Study of Thunderstorm Electrification and Lightning Flash Rate written by Robert Solomon and published by . This book was released on 1997 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Experimental Studies of Thunderstorm Electrification

Author : Donald R. Fitzgerald
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (17 download)

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Book Synopsis Experimental Studies of Thunderstorm Electrification by : Donald R. Fitzgerald

Download or read book Experimental Studies of Thunderstorm Electrification written by Donald R. Fitzgerald and published by . This book was released on 1976 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Airborne electric field sensing and computing systems have been developed and flown on C-130, F-100F, RF4C, and U-2 aircraft for studies of shower, cloud, and thunderstorm charge centers. Examples are given of the proper separation of field components and aircraft charge during thunderstorm penetrations and during direct lightning strikes to the test aircraft. Techniques have been employed for roll compensation of the aircraft-fixed field components so that real-time vector displays indicating the centroid of near-by charge concentrations are available for use in avoidance of probable lightning areas, or for use in selecting them to maximize the probability of a strike to test aircraft during lightning-aircraft interaction studies. The development of the storm electrical structure is directly related to details of the cloud water and ice distribution linked through the thermal and draft structure in the storm. Major features of the internal electrical pattern are often seen in data taken above, alongside, or at the surface. However, in accordance with electrostatic field theory, many of the fine structural details found within the storm are suppressed outside. The major vertical component field pattern is found to be one that could be produced by simple tilted dipolar charge structures. Depending on the physical conditions in different regions of the storm, the upper excess charge of the dipole may be either positive as generally reported from surface observations of the field, or it may be negative, as found in a number of the U-2 storm overflights accomplished in this project. (Author)

The Earth's Electrical Environment

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309036801
Total Pages : 279 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis The Earth's Electrical Environment by : National Research Council

Download or read book The Earth's Electrical Environment written by National Research Council and published by National Academies Press. This book was released on 1986-02-01 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: This latest addition to the Studies in Geophysics series explores in scientific detail the phenomenon of lightning, cloud, and thunderstorm electricity, and global and regional electrical processes. Consisting of 16 papers by outstanding experts in a number of fields, this volume compiles and reviews many recent advances in such research areas as meteorology, chemistry, electrical engineering, and physics and projects how new knowledge could be applied to benefit mankind.

Storm and Cloud Dynamics

Author : William R. Cotton
Publisher : Academic Press
ISBN 13 : 0080916651
Total Pages : 826 pages
Book Rating : 4.0/5 (89 download)

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Book Synopsis Storm and Cloud Dynamics by : William R. Cotton

Download or read book Storm and Cloud Dynamics written by William R. Cotton and published by Academic Press. This book was released on 2010-12-21 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt: Storm and Cloud Dynamics focuses on the dynamics of clouds and of precipitating mesoscale meteorological systems. Clouds and precipitating mesoscale systems represent some of the most important and scientifically exciting weather systems in the world. These are the systems that produce torrential rains, severe winds including downburst and tornadoes, hail, thunder and lightning, and major snow storms. Forecasting such storms represents a major challenge since they are too small to be adequately resolved by conventional observing networks and numerical prediction models. Provides a complete treatment of clouds integrating the analysis of air motions with cloud structure, microphysics, and precipitation mechanics Describes and explains the basic types of clouds and cloud systems that occur in the atmosphere-fog, stratus, stratocumulus, altocumulus, altostratus, cirrus, thunderstorms, tornadoes, waterspouts, orographically induced clouds, mesoscale convection complexes, hurricanes, fronts, and extratropical cyclones Summarizes the fundamentals, both observational and theoretical, of atmospheric dynamics, thermodynamics, cloud microphysics, and radar meteorology, allowing each type of cloud to be examined in depth Integrates the latest field observations, numerical model simulations, and theory Supplies a theoretical treatment suitable for the advanced undergraduate or graduate level, as well as post-graduate

Government Reports Announcements & Index

Author :
Publisher :
ISBN 13 :
Total Pages : 692 pages
Book Rating : 4.:/5 (3 download)

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Book Synopsis Government Reports Announcements & Index by :

Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1994-07 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Physics of the Atmosphere, Climatology and Environmental Monitoring

Author : Robert Zakinyan
Publisher : Springer Nature
ISBN 13 : 3031190122
Total Pages : 359 pages
Book Rating : 4.0/5 (311 download)

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Book Synopsis Physics of the Atmosphere, Climatology and Environmental Monitoring by : Robert Zakinyan

Download or read book Physics of the Atmosphere, Climatology and Environmental Monitoring written by Robert Zakinyan and published by Springer Nature. This book was released on 2022-12-01 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings book presents a discussion by leading scientists and specialists of the latest scientific results, developed methods, technologies and technical means of research and pilot work in the field of geosciences and environmental management. An important task is to familiarize young specialists, teachers, graduate students and students with the current state and the latest world achievements in this field of knowledge. Currently, there is a rapid and significant climate change, which manifests itself not only in global warming, but also in noticeable changes in other atmospheric and climatic characteristics among others.

Thunderstorm Electrification

Author : C. A. S. L. Peck
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (643 download)

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Book Synopsis Thunderstorm Electrification by : C. A. S. L. Peck

Download or read book Thunderstorm Electrification written by C. A. S. L. Peck and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Thunderstorm Electricity

Author : Horace Robert Byers
Publisher :
ISBN 13 :
Total Pages : 344 pages
Book Rating : 4.:/5 (551 download)

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Book Synopsis Thunderstorm Electricity by : Horace Robert Byers

Download or read book Thunderstorm Electricity written by Horace Robert Byers and published by . This book was released on 1956 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Analysis of Florida Thunderstorm

Author : Rahul Ramachandran
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.:/5 (38 download)

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Book Synopsis Analysis of Florida Thunderstorm by : Rahul Ramachandran

Download or read book Analysis of Florida Thunderstorm written by Rahul Ramachandran and published by . This book was released on 1994 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Kinematic, Microphysical, and Electrical Structure and Evolution of Thunderstorms During the Severe Thunderstorm Electrification and Precipitation Study (STEPS)

Download Kinematic, Microphysical, and Electrical Structure and Evolution of Thunderstorms During the Severe Thunderstorm Electrification and Precipitation Study (STEPS) PDF Online Free

Author : Kyle Cameron Wiens
Publisher :
ISBN 13 :
Total Pages : 295 pages
Book Rating : 4.:/5 (591 download)

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Book Synopsis Kinematic, Microphysical, and Electrical Structure and Evolution of Thunderstorms During the Severe Thunderstorm Electrification and Precipitation Study (STEPS) by : Kyle Cameron Wiens

Download or read book Kinematic, Microphysical, and Electrical Structure and Evolution of Thunderstorms During the Severe Thunderstorm Electrification and Precipitation Study (STEPS) written by Kyle Cameron Wiens and published by . This book was released on 2005 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Ice Crystal-graupel Collision Charging Mechanism of Thunderstorm Electrification

Author : Peter Berdeklis
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)

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Book Synopsis The Ice Crystal-graupel Collision Charging Mechanism of Thunderstorm Electrification by : Peter Berdeklis

Download or read book The Ice Crystal-graupel Collision Charging Mechanism of Thunderstorm Electrification written by Peter Berdeklis and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ice crystal-graupel collision charging mechanism, which is considered important in thunderstorm electrification, was studied using a newly developed Triple Interaction Facility. The facility is the first to allow independent control of the solid, liquid and vapor phases of a simulated cloud. The charge transferred to a riming target by collisions with ice crystals was measured over a wide range of cloud conditions. It was found that the charge transfer was a function of the temperature and the effective liquid water content of the cloud. It was also found that the charge transfer to the target was extremely sensitive to the relative humidity at which the ice crystals were grown. Higher relative humidity always promoted stronger negative charging, while lower humidity led to weaker negative or stronger positive charging. The sensitivity of the charge transfer to relative humidity was greatest at temperatures between-13°C and-18°C, with the strongest negative charging observed near-15°C. Within this temperature range the average charge transferred to the target could be varied from +5 fC per ice crystal collision to -25 fC per collision by varying the humidity from ice to water saturation, respectively. In experiments performed at humidities near water saturation and at temperatures near -15°C, charge transfers greater than -60 fC per collision were observed within the first 30 seconds after ice crystals are initiated. It was also found that at high relative humidity the maximum negative charge transferred to the target occurred at a velocity of 5m s-1 and was much weaker at 3, 4 and 6 m s-1. A parameterization of the results is presented for use in numerical thunderstorm models. Analysis of the data indicates that a competition between negative charge transfer between the liquid-like' layers of the colliding ice particles and positive charge transfer due to different dislocation densities can provide a consistent physical model of the effect of relative humidity. It is shown that differences in. the relative humidity can explain quantitatively the discrepancies between the observations of previous investigators. A new conceptual model of thunderstorm electrification is also presented.