Recent Accomplishments in Observing Global
- Data from TOMS, SSUVB, and SAGE enabled the USGCRP to
maintain continuous global monitoring of stratospheric ozone,
documenting a record low total atmospheric ozone in 1993.
- Data from Landsat enabled full coverage of Brazil, documenting
rates of deforestation. Estimates of deforestation rate are now lower
than previously thought.
- Through a network of ground-based sites, the USGCRP maintained
continuous measurements of atmospheric concentrations and trends
of greenhouse gases. These measurements have documented that
the rate of increase in CO2 and in methane has slowed
over the last two years.
- An interagency UV Monitoring Network was established for
nationwide coverage of UV at the surface. Health effects research
continues to show cause for concern and the need for continuous UV