Frequently Asked Questions
A general overview of global warming and the science behind its understanding.
Global Temperature Uncertainty
National Climatic Data Center Frequently Asked Questions for Uncertainty of Global Temperature Estimates
- Temperature Monitoring
Global Climate Change Indicators
Latest information of observed climate change illustrating global warming
An introduction to the major greenhouse gases in the earth's atmosphere. The FAQ discusses the relative potency, concentration and expected atmopsheric lifetime.
NCDC's Global Temperature Anomalies Dataset
The Merged Land & Ocean Surface Temperature data are presented as anomalies (departures from a long-term average) on a five-degree by five-degree global grid. The period of record is January 1880 through the most recent month.
- NOAA's official responses to congressional hearing on climate change and adaptation
- NCDC Director Thomas Karl's written testimony on climate change adaptation before the House Committee on Energy and Commerce and Subcommittee on Energy and Environment