ATMS 411/611
ATMOSPHERIC_PHYSICS


Daily Notes
Homework
Syllabus

Reno Weather


* Welcome to Fall 2015! : Hurricane and fire seasons is here. TIME UTC *

Time and Place:   Monday/Wednesday/Friday 11am to 11:50, Room DMS106

Textbook: Atmospheric Science: An introductory survey by Wallace and Hobbs. Companion site.

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.
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.

Helpful reference: Meteorology Today: An Introduction to Weather, Climate, and the Environment, by C. Donald Ahrens.
Free online Introductory Textbook for Atmospheric Science
and local backup.

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
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.

AEROSOL
EXCELLENT introduction to aerosol!
Photoacoustic measurements of aerosol light absorption.
Real live aerosol optics measurements at NOAA CMDL sites.

CLOUD MICROPHYSICS AND RADIATIVE PROPERTIES
Summary of common instruments used for cloud microphysics measurements.
Treasure chest of publications on clouds, remote sensing, and radiative transfer.
Cirrus cloud scattering models and remote sensing.

REMOTE SENSING
NASA's AERONET Site.

GENERAL DISCUSSION OF RADIATION MEASUREMENTS AND HOW THEY ARE DONE.
Daily plots of solar and thermal radiation from the surface around the world, and overview.
Solar radiation basics, and network measurements from the Univ. of Oregon.

IR
Blackbody radiation overview, and a nice discussion of IR emission from the body.
How you measure longwave irradiance, and a comparison of methods.
Calculate MODTRAN3 Atmospheric IR Radiation.
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 . (image from this site. Another image from another site that also explains the ozone hole.)
Real Live UV-B and Column Ozone Measurements, including those at DRI's Storm Peak Laboratory.
Check out the 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.