ATMS 411/611 Atmospheric Physics [main page] [homework] [2018 notes] [2017 notes] [2015 notes][2010 notes].

 

 


Week 5: 22 September

Reread the final project assignment; you can work on it all semester.

Plan:
Bring questions about homework 2 presentations to class on Monday.
Homework presentations on Tuesday. Take good notes for problems discussed by other students.

Chapter 3 topics
Read chapter 3, Atmospheric Thermodynamics. We will have several homework assignments from this especially important chapter.
Presentation for chapter 3.
The goals (learning and review objectives)

a. Ideal gas equation applied to dry and moist air.
b. Virtual temperature.
c. Potential temperature.
d. Hydrostatic equation.
e. Increasingly detailed description of the temperature and pressure distribution in the atmosphere.
f. SkewT logP diagrams.
f-g. Relative humidity, absolute humidity.
g. Dew point temperature.
h. Wet bulb temperature.
i. Equivalent potential temperature.
j. Latent heat release and absorption in condensation and evaporation of water.
k. Stability of air parcels.
l. Indices on soundings.
m. Brunt–Väisälä frequency and gravity waves.
o. Sound propagation in the atmosphere.

 

 

Week 4: 16 September

Reread the final project assignment; you can work on it all semester.

Plan:
Bring questions about homework 1 to class on Monday. Homework 1 is due at the end of the day.
Continue to work on Homework 1. We had a brief start last Thursday.

Where we are headed:
Read chapter 3, Atmospheric Thermodynamics. We will have several homework assignments from this especially important chapter.
Presentation for chapter 3.
The goals (learning and review objectives)

a. Ideal gas equation applied to dry and moist air.
b. Virtual temperature.
c. Potential temperature.
d. Hydrostatic equation.
e. Increasingly detailed description of the temperature and pressure distribution in the atmosphere.
f. SkewT logP diagrams.
f-g. Relative humidity, absolute humidity.
g. Dew point temperature.
h. Wet bulb temperature.
i. Equivalent potential temperature.
j. Latent heat release and absorption in condensation and evaporation of water.
k. Stability of air parcels.
l. Indices on soundings.
m. Brunt–Väisälä frequency and gravity waves.
o. Sound propagation in the atmosphere.

Thursday: Hydrostatic equation and applications: Start layer thickness discussion, hypsometic equation, and pressure levels.

 

Wednesday: Virtual Temperature. Click image for larger version.

 

Tuesday: Ideal gas law in its many forms; partial pressure; and the microscopic, kinetic theory of pressure

 

Model for pressure discussed Monday.

 

Related Information:

McNair Scholars Program at UNR: A program to help you succeed as an undergrad, and in grad school.

AMS scholarships for undergrads and grads, deadlines approaching.

Sudden stratospheric warming in Antarctica, and in general.

Meteor trails and the vertical structure of the atmosphere. (Useful for problem 1.6e).

 

 

 

 

 

Week 3: 9 September

Plan:
Continue to work on Homework 1. We had a brief start last Thursday.

Strategy for obtaining the scale height from the sounding data.

 

 

Related Information:

AMS scholarships for undergrads and grads, deadlines approaching.

 

 

Week 2: 2 September

Plan:
Continue introduction to the skewT diagram and it's uses.
Discuss problem 1.12 on homework 1 to illustrate concepts of chapter 1 through analysis of atmospheric data. Visit Antarctica for example soundings.

Skew T showing definition of the lines on the chart: Discuss the trajectory of an air parcel lifted from the surface to the top of the atmosphere.

Clouds and lifting condensation level.

Look at the Reno soundings for 0z and 12z on August 29th as examples of summer time afternoon and morning soundings and interpretation using air density.

8 August 2019 0z sounding and the associated vertical motions as measured by the UNR lidar.

Begin working on problem 3 of the homework.

Water vapor pressure from yesterday and discussion of density for interpretating soundings , and doppler lidar discussion

 

Wednesday 4 Sept class. Dewpoint temperature and air parcel example from the surface conditions of the Reno morning sounding. Click images for larger version.

 

Tuesday 3 Sept class. Problem 1.12 discusson and curves on the skew T lnP diagram

 

Related Information:

Reno hot air balloon races.

Physics seminar on black holes.

Undergraduate Research Scholarship Opportunity: UNR NSF EPSCOR project.
Find a faculty mentor; brainstorm a project; write a proposal; hopefully get funded to carry out the research project, often a good lead in for your senior thesis project.

Perlan project in Argentina. Glider out of Minden NV that's going for the world's record altitude in the Andes mtns of Argentina.

 

 

 

 

Week 1: 26 August

Skew T showing definition of the lines on the chart.

Normand's rule.

Interactive skew T diagram.

Atmospheric Sounding Data from UWyo.

Thursday 29 August class: Intro to the skewT lnP diagram


Wednesday 28 August class: Density of dry and moist air and variation of temperature with altitude.

 

Tuesday 27 August class: Pressure and temperature in the atmosphere. Click images for larger version

 

Monday 26 August class: click image for larger version

 

First Day Agenda
Introductions -- each student introduce themselves and give their major.
Syllabus.
Homework.
Webcampus for online homework assignments/reading.

Required and Optional Course Materials

Homework 1 is due 10 Sept 2018, to be turned in through web campus as well.

Online Homework 1 is due 1 Sept 2017. See webcampus. This is based on MetEd.

The final project has been posted.

Homework for Monday and Tuesday: Read chapter 1.

This class is:
One part lecture;
One part active class participation/activity involving atmospheric data from around the world;
One part study using online modules for atmospheric science education.

Overview Presentation: Atmospheric Science relies heavily on measurements and models!

Vertical structure of the atmosphere.

Related Information:

Undergraduate Research Scholarship Opportunity: UNR NSF EPSCOR project.

Perlan project in Argentina. Glider out of Minden NV that's going for the world's record altitude in the Andes mtns of Argentina.

Free online Introductory Textbook for Atmospheric Science and local backup for a review and introduction to the field.

Origin of the Atmosphere and Composition presentation chapter 2.

Example project: burning of the rainforest in Brazil as monitored by satellite. Ecology lesson from a grade school in Porto Velho Brazil.

Weather, geophysical data and models.

Weather

World record hail stone in Vivian South Dakota. See more on hail.

The Earth's atmosphere is very dynamic, current satellite view and archived: movie 5 fps.

Wind direction.

Reminder of cause for the seasons.

Pittsburgh Spirit Fountain Cloud Physics and coordinate system (click image for larger version.)