ATMS 411/611 ATMOSPHERIC PHYSICS Daily Notes Homework Syllabus

Vertical motions measured with the UNR lidar.

* Welcome to Fall 2024! : Hurricane and fire seasons are here *

Time and Place:   Monday/Tuesday/Wednesday/Thursday 8 am to 8:50 am, Room DMS106

Skew T log P diagram from textbook, and as a gif file.
Here's a contrast enhanced gif file, and another less contrast version.
Skew T presentation for in class discussions.
Skew T showing definition of the lines on the chart.
Interactive skew T diagram.
Procedures for obtaining useful quantities from skewT graphs.
Discussion of skew T diagrams and their usefulness.
Interpretation of skew T indices.
Black and white version of the Skew T graph.
Comet Program Meteorological Education on Skew T log P.
Some examples.

Use of skew T in forecasting: part 1, part 2, part 3. More on skew-T.
Atmospheric Physics Demonstrations.
Cloud level and amount with radiosonde.

Excellent article on multiple scattering in the atmosphere.
Notes of infrared radiation transfer in a gaseous atmosphere.

General Information :
The Earth's atmosphere is very dynamic (movie 5 fps and 30 fps).
Vertical structure of the atmosphere.

SOLAR RADIATION
Spreadsheet with extraterrestrial solar spectrum and spectrum at the surface.
Solar calculator for solar zenith angle, Site 1, Site 2, or from this spreadsheet.
Atmospheric radiation transfer code on line.

SNOW ALBEDO
SNICAR, the snow albedo calculator.
Snow albedo measurements and model, including effects of soot.
Snow albedo, Antarctica, including effects of soot.
Simple Model Snow Albedo, Snow Grain Optics, Albedo .
Melt the ice caps with a fine layer of soot: Demo for the effects of absorption on multiple scattering.

CLOUD MICROPHYSICS AND RADIATIVE PROPERTIES
Summary of common instruments used for cloud microphysics measurements.

REMOTE SENSING
NASA's AERONET Site.

IR
Blackbody radiation overview, and a nice discussion of IR emission from the body.
How you measure longwave irradiance, and a comparison of methods.
IR MEASUREMENTS, MODEL, FROM RENO, ASSOCIATED WITH THE CLASS
Some of the class participants enjoying a fine day, and taking measurements.
Downwelling Radiance Measurement, clear, dry sky, and blackbody.
Measured Brightness Temperatures for two very different years, and their soundings. (Skew T's for 15Apr99 and 21Feb01).
Theoretical Molecular Absorption Spectra for Water Vapor, Carbon Dioxide, Ozone, and Methane.
Class of 2004 measurements, 24 Mar 2004.

UV & VISIBLE
UV A, B definitions. (image from this site. Curve labeled D is spectrum including only Ozone absorption; B and C include aerosol.)
Absorption spectra of gases in the UV, at specified concentrations.
Dobson Units Definition . (image1, image2).
The ozone hole.)
Real Live UV-B and Column Ozone Measurements, including those at DRI's Storm Peak Laboratory.
Extinction coefficient of Nitrogen Dioxide gas as a function of wavelength.
Rayleigh scattering coefficient for the atmosphere, and how it is determined, from the UV to the near IR.