Upper Atmosphere Research Satellite Upper Atmosphere Research Satellite The Upper Atmosphere Research Satellite (UARS) was a NASA-operated orbital observatory whose mission was to study the Earth’s atmosphere, particularly the protective ozone layer. The satellite was deployed from Space Shuttle "Discovery" during the STS-48 mission on 15 September 1991. It entered Earth orbit at an operational altitude of , with an orbital inclination of 57 degrees. The original mission duration was to be only three years, but was extended several times. When the mission finally ended in June 2005 due to funding cuts, 14 years after the satellite's launch, six of its ten instruments were
Carbon dioxide in Earth's atmosphere dioxide is often mentioned in the context of its increased influence as a greenhouse gas since the pre-industrial (1750) era. In the IPCC Fifth Assessment Report the increase in CO was estimated to be responsible for 1.82 W·m of the 2.63 W·m change in radiative forcing on Earth (about 70%). The concept of atmospheric CO increasing ground temperature was first published by Svante Arrhenius in 1896. The increased radiative forcing due to increased CO in the Earth's atmosphere is based on the physical properties of CO and the non-saturated absorption windows where CO absorbs outgoing long-wave energy. Atmospheric carbon dioxide