Surface radiative fluxes are a key parameter of climate. The surface radiation budget sums up the downward shortwave radiation (global radiation) and the upward shortwave component reflected by the Earth's surface (reflective radiation), as well the upward thermal radiation emitted by the Earth's surface and the according downward thermal component by the atmosphere, both known as longwave radiative fluxes.
Since 1992 surface radiation measurements are operated at the AWIPEV research base, contributing to the Baseline Surface Radiation Network (BSRN). The long-term observations of surface radiation allow to identify signals of climate change, that are analyzed in the Atmospheric Physics section.
Similar surface radiation measurements are operated at the Neumayer station in Antarctica.