Parameterisation of surface radiation flux at an Antarctic site

During the Antarctic summer 1994r95 the values of downward and upward flux densities of both solar and terrestrial radiation were recorded at 1200 m for a period of 1 month on the Reeves Ž X X . Neve Glacier lat 74839 S, long 161835 E , near the Italian base of Terra Nova Bay. The relations ` w proposed by Swinbank Swinbank, W.C., 1963. Long-wave radiation from clear skies. Q. J. R. x w Meteorol. Soc. 89, 339–348 , Idso and Jackson Idso, S.B., Jackson, R.D., 1969. Thermal x w radiation from the atmosphere. J. Geophys. Res. 74, 5397–5403 and Deacon Deacon, E.L., 1970. x The derivation of Swinbank’s long-wave radiation formula. Q. J. R. Meteorol. Soc. 96, 313–319 associating the long-wave atmospheric radiation flux only to the air temperature at screen level were tested in extreme Antarctic climatological condition. A relation between the long-wave radiation flux and both screen air temperature and cloud cover fraction in accordance to the height of the cloud base was defined using the Kasten and Czeplak relationship that relates the solar radiation flux and the cloud cover index. The study of the incoming short-wave radiation flux from the clear sky and that reflected by the surrounding snow cover allowed for highlighting the role of surface geometry on the albedo measurements. q 2000 Elsevier Science B.V. All rights reserved.