POLLEN OF SAGEBRUSH (ARTEMISIA SP.) IN SOLID PRECIPITATION OF THE ALTAI KRAI AND AREAS OF ITS SUPPLY

The results of microscopic analysis of 207 samples of solid precipitation (snow) collected at three key points located in various natural conditions in the Altai krai during the snow cover period (2019-2020, 2020-2021) are presented. The study focuses on the determination of sagebrush pollen ( Artemisia sp.) as one of the main indicators of the state of geosystems, cryospheric processes during paleoclimatic and paleoecological reconstructions, and the main allergen. Pollen grains of trees and grasses were identified in the third part of the samples taken, and sagebrush was isolated in 20% of this number of samples. To determine the areas of its supply, an integrated approach based on the analysis of backwards trajectories of air masses movement (HYSPLIT model) and synoptic conditions (ERA 5 and NCEP/NCAR reanalysis) was used. Such an integrated approach made it possible to determine that sagebrush pollen was supplied with air masses coming from the territories of the Kazakh Upland (Kazakhskiy Melkosopochnik).