Results of Actinometric Measurements in the Valley of the Nekrasov Glacier

Results of field actinometric measurements that were obtained in July 2023 in the valley of Nekrasov mountain glacier (the South Chujsky Range, Altai) are shown in the paper. Values of total incoming and of reflected solar radiation were measured; field works were carried out between 14.07.2023 and 27.07.2023, the pyranometer “Peleng SF-06” was used. Expressed daily cycle of the total solar radiation is found and approximated by a parabola; major variations of incoming radiation in the morning (9 a.m.) and in the evening (6 p.m.) are caused by shading of the relief. The albedo values of nature surfaces in the valley of Nekrasov glacier are determined: snowfield in the valley (0.39), dry moraine without moss (0.10) and with moss (0.11), snow cover on the glacier (0.44), snowfield in the edge part of glacier (0.25), wet firn (0.27), sand on wet ice (0.09), stream on the glacier (0.11).