ess 7 an introduction to space weather fall, 2011 raymond...
TRANSCRIPT
ESS 7ESS 7
An Introduction to Space An Introduction to Space WeatherWeather
Fall, 2011Fall, 2011
Raymond J. WalkerRaymond J. Walker
What is Science?
• Not a collection of facts!
• A way of thinking critically and
quantitatively to solve problems!
• An important skill no matter what your path • An important skill no matter what your path in life.
• Mathematics is the language of science.
• We will learn about science by examining how the environment of space effects the Earth and therefore us.
What are the Goals of ESS 7?
• Introduce you the exciting field of space weather.
• Develop and hone skills in
– Critical thinking– Critical thinking
– Problem solving
– Technical communication
• Learn and develop scientific thinking skills.
Class Information• Professor Ray Walker
– 6843 Slichter Hall
• Office Hours: MWF at after class -11:30AM or by appointment.11:30AM or by appointment.
Class Information Continued• Text book
– “An Introduction to Space Weather” by Mark Moldwin
• Lecture notes –http://lucid.igpp.ucla.edu/lessons/ess7_2011_fall/Lessons.htm_fall/Lessons.htm
• Grading:
– Homework 25%
• Due one week after assigned
• Late homework worth 50%
– Two midterms 20% each
– Final 35%
What is Space Weather?“Space weather” refers to conditions on the Sun and in the
solar wind, magnetosphere, ionosphere, and
thermosphere that can influence the performance and
reliability of space-borne and ground-based
technological systems and can endanger human life or
health. Adverse conditions in the space environment can health. Adverse conditions in the space environment can
cause disruptions of satellite operations,
communications, navigation, and electric power
distribution grids, leading to a variety of socioeconomic
losses.”
National Space Weather Program Strategic Plan, 1995
Office of the Federal Coordinator for Meteorological Services and Supporting Research.
Why Bother?• Space physics started as curiosity driven
science - to explore the ionosphere, magnetosphere, Sun and heliosphere.
• In the 1970’s, 1980’s and 1990’s we started to use the regions above the started to use the regions above the neutral atmosphere – communications, weather forecasting, navigation etc.
• As early as the 1960’s humans began to go into space.
Space Effects on Technology
NRCan – Government of Canada
World Satellite Industry RevenuesWorld Satellite Industry Revenues
Source: Satellite Industry Association
World Satellite Industry RevenuesWorld Satellite Industry Revenues
In 2010 it reached $168.1 billion!
Source: Satellite Industry Association
In 2010 it reached $168.1 billion!
World Satellite Services RevenueWorld Satellite Services Revenue
Source: Satellite Industry Association
The Example of Galaxy IV?• Space is a very hostile environment.
• In the 1990’s the commercial satellite industry boomed – by 2010 making, launching and using the satellites was a $168X109 per year business.$168X109 per year business.
• Galaxy IV was an operating and profitable communications satellite.
– 90% of pager traffic
– Several broadcast networks – NPR (radio), CBS (television)
May 19, 1998
• Galaxy IV failed.
• It had been in an intense radiation environment for weeks due to a series of magnetic storms.magnetic storms.
• It was killed by radiation effects related to the storms.
A More Down to Earth ExampleArea affected by black out.
Where Disturbances Occurred
NCAR Windows to the Universe
SyllabusDate Lecture Assignment
9/23 Introduction to Space Weather Read Chapter 1
9/26 History Read Chapter 2 – HW 1
9/28 The Sun
9/30 The Sun
10/3 The Sun Read Chapter 3 – HW 2
10/5 The Heliosphere
10/7 The Heliosphere
10/10 The Heliosphere
10/12 Review for First Exam
10/14 First Exam
Syllabus
Date Lecture Assignment
10/17 Bow Shock and Magnetopause
10/19 Magnetosphere Read Chapter 4 – HW 3
10/21 Magnetosphere
10/24 Magnetosphere
10/26 Substorms Read Chapter 5 – HW 4
10/28 Storms
10/31 Atmosphere
11/2 Ionosphere
11/4 Review for Second Exam
11/7 Second Exam
11/9 Aurora Read Chapter 6- HW 5
Syllabus
Date Lecture Assignment
11/11 Holiday
11/14 Technology and Space Weather
11/16 Technology and Space Weather
11/18 Technology and Space Weather Read Chapter 7 – HW 6
11/21 Planets
11/23 Planets
11/25 Holiday
11/28 Humans in Space
11/30 Humans in Space/ Other Space Weather
12/2 Review for Final
The Sun (September 21,2011)