GOME-2 instrument

The Global Ozone Monitoring Experiment-2 (GOME-2) is a an instrument aboard the Metop series of satellites, which are part of the European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT) Polar System. GOME-2 is designed to monitor the Earth's atmosphere, specifically focusing on ozone levels, trace gas concentrations, and atmospheric pollutants.

GOME-2 operates by measuring solar light reflected and scattered by the Earth's atmosphere or surface in the ultraviolet and visible parts of the spectrum. These measurements are essential for understanding and monitoring the Earth's ozone layer, air quality, and climate change. The data collected by GOME-2 contributes to atmospheric chemistry models and supports weather forecasting and climate monitoring services.

Launched in three successive Metop satellites - Metop-A, Metop-B, and Metop-C - GOME-2 has provided continuous data since its first deployment in 2006. The instrument's longevity and precision have made it a valuable asset for scientists and researchers worldwide, helping them to track changes in the Earth's atmosphere over an extended period.

GOME-2 factsheet

• Spectral band: 240-790 nm
• Spectral resolution: 0.26-0.51 nm
• Spatial resolution: 40 x 40 km² (Metop-A), 80 x 40 km² (Metop-B/C)
• Earth coverage: 120-1920 km
• Spectral channels: 4096
• Polarization channels: 30
• Calibration system: spectral lamp, white lamp, solar diffuser
• Dimensions: 600 mm x 800 mm x 500 mm
• Weight: 68 kg
• Main bus voltage: 22-37 V
• Power consumption: 50 W
• Data rate: 400 kbit/s

More info:

• GOME-2 factsheet
• ESA GOME-2 page