Volcanic emissions and global change

The USGS has an active volcano emissions project funded by the Volcano Hazards Program and the Global Change Research Program
Project Description - Mission - Objectives -- Goals
Project Staff
Ongoing Activities
Recent Abstracts
Total SO2 Emissions and Pre-Eruption Vapor-Saturated Magma at Mount St. Helens, 1980-88
Project Publications
Volcano gas fact sheet
Data-sets on line: 
USGS Open-File Report 94-212	A compilation of sulfur dioxide and carbon dioxide 

				emission-rate data from Mount St. Helens during 1980-88:
				U.S. Geological Survey Open-File Report 94-212, by Kenneth A.
				McGee and Thomas J. Casadevall