MetOp carries five European state-of-the-art instruments and a set of well-proven instruments that have been providing valuable data from US satellites. The payload includes the following instruments:

A-DCS (Advanced Data Collection System)
AMSU-A1 & -A2 (Advanced Microwave Sounding Units)
ASCAT (Advanced Scatterometer)
AVHRR (Advanced Very High Resolution Radiometer)
GOME-2 (Global Ozone Monitoring Experiment-2)
GRAS (Global Navigation Satellite System Receiver for Atmospheric Sounding)
HIRS/4 (High Resolution Infrared Sounder)
IASI (Infrared Atmospheric Sounding Interferometer)
MHS (Microwave Humidity Sounder)
SARP-3 (Search And Rescue Processor)
SARR (Search And Rescue Repeater)
SEM-2 (Space Environment Monitor)