GOME-2 (Global Ozone Monitoring Experiment-2)

GOME-2 is the Global Ozone Monitoring Experiment-2 instrument flown on the MetOp-A, MetOp-B, and MetOp-C meteorological satellites ^[1][2]. It is a scanning passive optical ultraviolet-visible spectrometer used for operational atmospheric composition products, including ozone, trace gases, aerosols, clouds, and ultraviolet radiation ^[1]. The main spectral band spans 240 to 790 nm with 4096 spectral channels ^[1][2].

The instrument is configured for broad operational coverage from polar-orbiting MetOp platforms. MetOp-B and MetOp-C wide-swath mode provides a 1920 km swath, with main-channel ground pixels of about 80 x 40 km ^[2]. GOME-2 also includes polarisation measurement devices covering 312 to 800 nm, with 30 bands and about 10 km sampling in the finer dimension ^[2][3]. Its spectral resolution is about 0.26 to 0.51 nm, depending on channel and operating mode ^[2].

For buyers, GOME-2 is a continuity instrument for operational atmospheric monitoring rather than a high-spatial-resolution imager. It supports ozone and trace-gas workflows that need consistent coverage, public meteorological mission operations, and ultraviolet-visible spectroscopy, with local scene detail outside its design focus ^[1][3]. The instrument was developed by Selex ES, also referenced as Selex-Galileo, under EUMETSAT and ESA contract ^[2]. GOME-2 products vary with host-satellite mode; the published native ground-sampling figure is 40 km, while operational pixels are described as 80 x 40 km.^[2].