GeoChange Global Change Data

GeoChange is an online data system
providing access to research results and
data generated by the U.S. Geological
Survey's Global Change Research
Program. Researchers in this program
study climate history and the causes of
climatic variations, as well as providing
baseline data sets on contemporary
atmospheric chemistry, high-resolution
meteorology, and dust deposition.
Research results are packaged as data
sets, groups of digital files containing
scientific observations, documentation,
and interpretation. The data sets are
arranged in a consistent manner using
standard file formats so that users of a
variety of computer systems can access
and use them.