Chemical & Engineering News presents an overview article which provides climatological data supporting climate model predictions.

A wide range of articles can be found by looking at The United Nations Framework Convention on Climate Change's Fact Sheets.

Other interesting and relevant articles are:

The Intergovernmental Panel on Climate Change (IPCC) provides a wide range of reports on the current understanding of Climate Change.

The Environmental Defense Fund presents a report which is intended to counter many of Rush Limbaugh's environmental remarks.

A draft report of the IPCC Second Assessment Synthesis Report provides a broad review of the potential consequences of climate change.

The IPCC presents a number of climate evaluation graphs.