Home – Home – Jornals – Earth’s Cryosphere 2022 number 6

The results of microscopic analysis of 118 samples of solid precipitation (snow) collected during the cold season of 2019-2020 at three key points in the neighboring Altai-Sayan and Tobol-Irtysh glaciological regions and on their border are presented. In 45 samples (38 %), advective pollen grains of trees (Betula sp., Pinus sp.) and herbs (Artemisia sp., families Asteraceae, Amranthaceae s.l. (incl. Chenopodiaceae), Fabaceae, Poaceae) were identified. Territories from which pollen grains arrived with air masses causing precipitation during the cold season were determined. Advective pollen of wormwood (Artemisia sp.) was brought from the territory of the Kazakh Upland and was determined in the snow of both glaciological regions and on their border. Pollen grains of Amaranthaceae s.l. (incl. Chenopodiaceae) were introduced from the plains of Kazakhstan and, partially, from the snow-free slopes of the Altai Mountains and from the Middle Ob Lowland. Pollen of Fabaceae family was only identified in the precipitation of the Altai-Sayan glaciological region, while pollen grains of Poaceae family were found in the precipitation of the Tobol-Irtysh region; in the border zone of the two glaciological regions, pollen grains of these taxa were not found.