ATMO/ECE 489/589
Outline of Possible Topics
(there
may be changes in the order in which this
material is presented, see also the comments at
the bottom of this
outline)
click here to download a
more printer friendly version of this outline
1. Introduction
1.1 Brief historical overview
1.2 Review of classical electricity and magnetism
Coulomb's law, electric field,
electrostatic potential, Gauss' Law, Poisson's equation, Laplace's
equation
Method of images, boundary value problems
Current density, electrical mobility, atmospheric conductivity
2. Fair Weather Electricity
2.1 Electrical structure of the
atmosphere
Global electric "circuit"
Fair weather electric fields
Air-earth currents
Conductivity profiles
2.2 Sources of atmospheric ions
Natural radioactivity
Cosmic rays
2.3 Small ion mobilities,
ion
balance
equations,
ion-aerosol
attachment
3. Cloud Electricity
3.1 Microphysical structure of
thunderstorm clouds
3.2 Thunderstorm electrification
Basic charging requirements
Ion capture and induction mechanisms
Electrical properties of water and ice
Thermoelectric and contact mechanisms
Ice-graupel collisions - laboratory data
Observations in clouds
3.3 Thunderstorm electric fields
Measurements
Screening layers
Charge structure of thunderclouds
3.4 The thunderstorm as a
current
source
4. Lightning
4.1 Basic lightning
phenomenology
Area densities and strike
probablilties
Cloud-to-ground flashes
Preliminary breakdown
Stepped leader
Return strokes
Dart Leader
J and K processes
Intracloud discharges
4.2 Upward lightning and
Triggered
lightning
4.3 Characteristics of lightning currents
4.4 Electric and magnetic fields produced by
lightning
Time domain antenna theory
Radio frequency emissions
4.5 Physical characteristics of
lightning channels
Dimensions
Thermodynamic properties
Energy balance
4.6 Thunder
4.7 Propagation, sferics, and
atmospheric radio noise
4.8 Methods of detecting and locating lightning
Gated, wideband sensors (MDF and
TOA)
RF techniques (Time of Arrival and Interferometry)
Satellite lightning sensors
4.9 Electrical transients at
high
altitudes, "sprites and elves"
5. Lightning Protection and Lightning Safety
5.1 Mechanisms of lightning
damage
5.2 Principles of lightning protection
Grounding, bonding, and shielding
Transient protectors
Shielding topology
5.3 Methods of protection
against
lightning
Buildings
Hazardous structures
Telecommunications and data systems
Electric-power transmission/distribution systems
Aircraft and avionics systems
5.4 Lightning safety
recommendations
This course is based largely on a
course developed and taught by Dr. E. Philip Krider for many years
at
the University of Arizona. Click here
for a longer more extensive list of topics used by Dr. Krider when
he
taught the course.
This course will probably be very similar to
the course taught in Spring 2011. You can view the notes for
most
of the lectures from that class here.
A
more
complete and more carefully constructed online version of the
Spring 2011
course can be found here.