The global component of Climate at a Glance (GCAG) provides global-scale temperature information using data from NOAA's Global Surface Temperature Analysis (NOAAGlobalTemp), which uses comprehensive data collections of increased global coverage over land (Global Historical Climatology Network-Monthly) and ocean (Extended Reconstructed Sea Surface Temperature) surfaces. The tool provides near real-time analysis of monthly and annual temperatures for the globe and is intended for the study of climate variability and change.