2) Calculating Solar Zenith Angle - Excel file fof calculating angle of the sun's rays from the vertical, called the Solar Zenith Angle (SZA), and explained here. Requires input of date, Greenich Mean Time, latitude, and longitude. Latitude and Longitude can be determined via these links for world cities and for US cities or zip codes.
Photolysis Rates - Excel file for ground-level calculations at various
solar zenith angles. Data for other altitudes may be found in
Chemistry of the Upper and Lower Atmosphere by Barbara J. Finlayson-Pitts and James N. Pitts, Jr.
Input data may be obtained from that text or Section 4 (pp 162-272 of the pdf file) of the JPL Data Evaluation.
4) Spectra of Photochemically
Active Compounds - Graphs of spectra and tables of absorption cross-sections
for selected compounds (Excel format).
- CFCs and related compounds
- Nitrogen Reservoir Species
Air Quality Conditions - EPA color-coded maps showing records and
predictions of air quality (ozone and particles) from across the United
Atmospheric Chemistry Course
Chemistry Links of Interest to the Dibble Group
T. S. Dibble web page
ESF Chemistry Home page
ESF Home page
"This material is based upon work supported by the National Science Foundation under Grant No. 0087057. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author and do not necessarily reflect the views of the National Science Foundation.