About this exercise type...

In nadir mode the GOME spectrometer looks _ the atmosphere. GOME is carried by the _ satellite, which is in a _, _ orbit with a period of about _.

As it passes over the Earth's surface the spectrometer scans the atmosphere and the surface _ of the satellite. Each scan covers an area on the ground of approximately _ along the track by _ across the track.

In nadir mode the GOME spectrometer measures the _. These measurements are performed during the _.

The instrument covers the entire surface of the Earth every _.