Researchers used a specially equipped plane for a series of pole - to - pole flights to measure the concentrations of greenhouse gases and black carbon
particles at different altitudes, different locations and different times of the year.
Important manifestations of such external forcing from space to the atmosphere are the variations in
different solar parameters such as the solar irradiance (including solar UV) and solar
particle fluxes, which can induce changes in the atmosphere both
at local and global scales, and can influence over a large range of
altitudes.