Do changes in stratospheric ozone relate to changes in UV-B irradiance and do both relate to life on Earth? This volume presents the latest data available in the basic scientific disciplines associated with these questions. The key topics are the interactive factors between the various research elements and the measurements needed to both validate ozone depletion and monitor UV flux changes in the biosphere.

I. Stratospheric Ozone Depletion and Changes in UV-B Radiation in the Biosphere

Tropospheric Chemistry Changes Due to Increased UV-B Radiation
The Effect of Clouds on Ultraviolet Radiation
Expected Changes in Irradiances, Particularly UV-B, in the Biosphere
UV Radiation as Related to the Greenhouse Effect
Thermophysical Properties of Environmentally Acceptable Refrigerants
II. UV-B Radiation and Physiological and Biochemical Changes as Related to UV-B Radiation
Physiological Changes in Plants Related to UV-B Radiation
Exposure Response Curves Action Spectra and Amplification Factors
Interaction Of UV-B Radiation and the Photosynthetic Process
Biological Responses to UV-B Radiation Dosages
Temporal and Fluence Responses of Tree Foliage to UV-B Radiation
Ultraviolet-B Irradlance Measurements Under Field Conditions
Effects of Stratospheric Ozone Depletion and Increased Levels of Ultraviolet Radiation On Subantarctic Forests and Western Patagonian Steppe: A Research Project
DNA Damage Action Spectroscopy and DNA Repair in Intact Organisms: Alfalfa Seedlings
UV-B-Inducible and Constitutive Genes that Mediate Repair and Toleration of UV-Damaged DNA in Arabidopsis Thaliana
Molecular Genetics of Nucleotide Excision Repair in Eukaryotes
Is UV-B a Hazard to Soybean Photosynthesis and Yield? Results of an Ozone/UV-B Interaction Study and Model Predictions
III. Effects of UV-B Radiation on Aquatic Systems
Aquatic Systems (Freshwater and Marine)
UV-B Effects on Aquatic Systems
UV-Effects on the Nitrogen Metabolism of Marine Phyto-Plankton and Adaptation to UV Radiation
Prevention of Ultraviolet Radiation Damage in Antarctic Marine Invertebrates
Evaluation of Field Studies of UVB Radiation Effects on Antarctic Marine Primary Productivity
IV. UV-B and Human Health
Effects of UV-B Radiation on Human and Animal Health
Epidemiology
Environmental Effects on Human Health and Immune Responses
UV-B Radiation and Photoimmunology
V. Instrumentation and Methods to Measure Response
Comparison of the Response of Soybean to Supplemental UV-B Radiation Supplied by Either Square-Wave or Modulated Irradiation Systems
The Non-Scanning UV-B Spectrophotometer
Stratospheric Ozone Depletion/UV Radiation-A Data and Information Access System
IV. How UV-B Measurements Can be Coordinated
Measurement and Instrument Coordination: Problems and Solutions
Nato's Program on the Science of Global Environmental Change
Monitoring Surface UV-B Radiation from Space
UV Spectroradiometric Monitoring in Polar Regions
UV Radiation Monitoring in New Zealand
The EC's Step UV-B Program
Total Ozone and UV-B Behavior in 1992/1993 at a Mto-Laittude Station
The Athens Station for Atmospheric Ozone and Solar Radiation Monitoring
High-Resolution Spectral UV Monitoring and Atmospheric Transfer Modeling in the Netherlands
Ground-Based Monitoring Of UV-B Radiation in Canada
The Canadian Ozone Watch and UV Index
UV Monitoring Program at the U.S. Epa
NOAA/EPA Surface Ultra-Violet Flux Index
The Usda Global Change Research Program
VI. Modeling
Workshop on Modeling: Summary
Plant Effects and Modeling Responses to UV-B Radiation
The Use of Crops Simulation Models in the Economic Assessment of Global Environmental Change
Modeling the Impacts Of UV-B Radiation on Ecological Interactions in Freshwater and Marine Ecosystems
Modeling the Latitude-Dependent Increase in Non-Melanoma Skin Cancer Incidence as a Consequence of Stratospheric Ozone Depletion
Modeling of Effects of UV-B Radiation onAnimals
Ozone Depletion and Skin Cancer Incidence: An Integrated Modeling Approach and Scenario Study
UV-B Radiation and the Photosynthetic Process
The Effects of UV-B Radiation on the Mammalian Immune System
UV-B and the Irrigated Rice Ecosystem: Effects and Modeling Research
What is the Question or Issue that Wont Go Away? An Informal Survey.