Trends '90: A compendium of data on global change.

This document is a source of frequently used global change data. This first issue includes estimates for global and national C02 emissions from the burning of fossil fuels and from the production of cement, historical and modem records of atmospheric C02 and methane concentrations, and several long-term temperature records. Included are tabular and graphical presentations of the data, discussions of trends in the data, and references to publications that provide further information. Data are presented in a two-page format, each dealing with a different data set. All data are available in digital form from the Carbon Dioxide Information Analysis Center.