AbstractGlobal solar radiation measurements and estimates of other radiation fluxes are made for a period of four years on a monthly basis, and one year on a daily basis, for an alpine valley. The site is at 43°02′S, 171°46′E, at an elevation of 780 m a.m.s.l. High day to day variabilities in global solar, net solar, net terrestial and net radiation are observed. A range of albedo values from 13% to 18% is found for tussock grass cover. A regression equation between global solar and net radiation is used and discussed. Mean monthly net radiation during the study year ranged from 269 ly day-1, in November, to 9 ly day-1, in June. The composite nature of net radiation is illustrated and attention is drawn to relatively large size of net terrestial radiation.