Climate change in the western part of the Russian Arctic in 1980–2021. Part 2. Soil temperature, snow, humidity

• Published in: Arctic and Antarctic Research
• Main Authors: I. V. Serykh, A. V. Tolstikov, И. В. Серых, А. В. Толстиков
• Format: Article in Journal/Newspaper
• Language: Russian
• Published: Государственный научный центр Российской Федерации Арктический и антарктический научно-исследовательский институт 2022
• Subjects: снежный покров; Arctic atlantification; Barents Sea; climate shift; climate warming; feedbacks; Kara Sea; northwest Russia; permafrost; snow cover; soil moisture content; White Sea; Баренцево море; Белое море; влагосодержание почвы; влажность воздуха; Карское море; климатический сдвиг; многолетняя мерзлота; обратные связи; потепление климата; северо-запад России; Arctic; Merra; Climate change; Northwest Russia
• Online Access: https://www.aaresearch.science/jour/article/view/474; https://doi.org/10.30758/0555-2648-2022-68-4-352-369

Based on average monthly data from the re-analysis of NASA MERRA-2 satellite measurements, the paper explores climatic changes in the temperature of the upper 1.5 meters of soil (TS), the thickness and area of the snow cover (SC), the moisture content of the top layer of soil 1 meter thick (SM) and air humidity at a height of 2 meters from the surface (AH) in the western part of the Russian Arctic (60°–75° N, 30°–85° E) for 1980–2021. The time interval considered is divided into two periods: 1980–2000 and 2001–2021. The differences between the average values of the parameters studied for these periods are calculated. The climatic changes that have occurred for the winter and summer seasons, as well as for each month of the year, are considered separately. Calculation of linear and quadratic trends has revealed an accelerating growth in the TS of the region studied in the period 2001–2021. A decrease in the thickness of the SC and a significant reduction in the area of the SC in November and April are shown. An increase in SM was found in the southwest and east of the region studied in the period 2001–2021, and a significant increase in AH in the western part of the Russian Arctic over the time interval studied is shown. Moreover, the growth of AH over the waters of the Barents, Kara and White Seas significantly accelerated in 2001–2021 compared to 1980–2000. По среднемесячным данным реанализа спутниковых измерений NASA MERRA-2 исследованы климатические изменения температуры верхних 1,5 метров почвы (ТП), толщины и площади снежного покрова (СП), влагосодержания верхнего слоя почвы толщиной 1 метр (ВП) и влажности воздуха на высоте 2 метра от поверхности (ВВ) в регионе западной части Российской Арктики (60°–75° с. ш., 30°–85° в. д.) за 1980–2021 гг. Рассматриваемый временной интервал разбит на 2 периода: 1980–2000 гг. и 2001–2021 гг. Вычислены разности между средними значениями исследуемых параметров за эти периоды. Отдельно рассмотрены климатические изменения, произошедшие для зимнего и летнего сезонов, а также ...