The CSIRO Marine Research Remote Sensing facility automatically receives and archives data from the USA's National Oceanic and Atmospheric Administration (NOAA) satellites. Up to 18 passes per day are tracked to receive data. The Advanced Very High Resolution Radiometer (AVHRR) data is received on the High Resolution Picture Transmission (HRPT) signal. Within an hour of reception, these data are automatically processed into full resolution sea surface temperature (SST) images. This set of data layers have been designed to show regions of core homogeneity, heterogeneity, eddy activity and frontal activity by CSIRO for the National Oceans Office, for the purposes of marine mapping, as part of an ongoing commitment to natural resource planning and management through the 'National Marine Bioregionalisation' project.