Global-scale Observations of the Limb and Disk

GOLD is a two-channel far-ultraviolet (FUV) imaging spectrograph built by the Laboratory for Atmospheric and Space Physics at the University of Colorado Boulder and flown as a hosted payload on the commercial communications satellite SES-14.

In June 2017, SES announced the successful integration of GOLD with the SES-14 satellite under construction at Airbus Defence and Space in Toulouse, France.

[9] The scientific objectives of the GOLD mission are to determine how geomagnetic storms alter the temperature and composition of Earth's atmosphere, to analyze the global-scale response of the thermosphere to solar extreme-ultraviolet variability, to investigate the significance of atmospheric waves and tides propagating from below the temperature structure of the thermosphere and to resolve how the structure of the equatorial ionosphere influences the formation and evolution of equatorial plasma density irregularities.

GOLD observations have also implicated gravity waves emanating from the lower atmosphere in the seeding of equatorial plasma bubbles, which degrade GPS performance.

First, GOLD observations showed that even weak or minor geomagnetic activity (maximum Kp=1.7) can still generate significant disturbances in the thermosphere and ionosphere.