SAGE III on ISS role in climate processes. water vapor measurements will provide important contributions on the long-term effect of this green house gas. Ozone research has remained at the forefront of atmospheric science for many years because stratospheric ozone shields the Earth's surface (and its inhabitants) from harmful ultraviolet radiation. Since recent declines in stratospheric ozone have been linked to human activity, accurate long-term measurements of ozone remain crucial. It is important to monitor ozone levels in the lower stratosphere and upper troposphere since observed trends are the largest and most poorly understood at those altitudes. SAGE III's high vertical resolution and long-term
Atmospheric Chemistry Suite than the PFS spectrometer of Mars Express orbiter. Of particular interest to this astrobiology mission, is the detection and characterization of the atmospheric methane (), as it may be of geological or biological nature. Large differences in the abundances were measured between observations taken in 2003, 2006, and on 2014 NASA reported that the "Curiosity" rover detected a tenfold increase ('spike') in methane in the atmosphere in late 2013 and early 2014. This suggestes that the methane was locally concentrated and is probably seasonal. Because methane on Mars would quickly break down due to ultraviolet radiation from the Sun and