Modern Trends of Temperature of the Atmospheric Boundary Layer over Siberia

Lomakina, N. Ya.; Lavrinenko, A. V.

doi:10.1134/s102485602204011x

Cited by 7 publications

(5 citation statements)

References 8 publications

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“…The classification based on temperature-related indexes (TX90P and TX10P) showed cohesive distributions in climatically homogeneous areas. Figure 7 shows that the Siberian region has the strongest increasing trend of hightemperature events (TX90P) in spring, especially in the eastern part of the region, which is consistent with the descriptions in previous studies [13,40] that examined trends in the seasonal averaged temperature and the frequency of abnormally high-temperature events. Additionally, it was also noted that in the recent decade (2011-2020), the frequency of high-temperature events in winter has increased in most of Western Siberia [14], i.e., high-temperature events are more likely to occur in colder seasons.…”

Section: The Trends Of Extreme Indexes In the Interior Of Siberiasupporting

confidence: 90%

Long-Term Trends of Extreme Climate Indexes in the Southern Part of Siberia in Comparison with Those of Surrounding Regions

et al. 2023

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Siberia, which experienced disastrous heat waves in 2010 and 2012, is one of the regions in which extreme climate events have occurred recently. To compare the long-term trends of extreme climate events in the southern part of Siberia with those of surrounding regions, we calculated 11 extreme climate indexes from observational data for 1950–2019 and analyzed the trends in Siberia and other parts of Russia using statistical techniques, i.e., Welch’s t-test, the Mann–Kendall test, Sen’s slope estimator, and a cluster analysis. We clarified that high-temperature events in March are more frequent in Siberia than in the surrounding areas. However, the increasing trends of high temperatures in Siberia were lower than those in northwestern China and Central Asia. The intensity of heavy precipitation is increasing in Siberia, as it is in the surrounding areas. Compared to the surrounding areas analyzed in previous studies, the trend of heavy precipitation in Siberia has not increased much. In particular, Siberia shows a more remarkable decreasing trend in heavy precipitation during the summer than other regions. The dry trends in the summer, however, do not occur in Siberia as a whole, and the opposite trend of summer precipitation was observed in some areas of Siberia.

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Section: The Trends Of Extreme Indexes In the Interior Of Siberiasupporting

confidence: 90%

Long-Term Trends of Extreme Climate Indexes in the Southern Part of Siberia in Comparison with Those of Surrounding Regions

et al. 2023

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“…Figure 1 shows the spatial distribution of the linear trend coefficients of anomalies in the average seasonal values of water vapor content at four ABL levels over the territory of Siberia for the period from 1981 to 2020. Analysis of long-term changes in air humidity in the ABL of the Siberian region over the past 40 years (Figure 1) showed that the distribution character of linear trends of anomalies in the average seasonal mass fraction of water vapor is spatially heterogeneous, depends on the season, and is more similar to the distribution of trends in the average seasonal temperature 20 , but with some differences. The summer season is characterized by the maximum positive air humidity trends observed at the ground level in most of the Siberian region: from 0.16 to 0.30 o / oo /decade in polar and subpolar latitudes and from 0.13 to 0.37 o / oo /decade in the temperate zone.…”

Section: Trends In Average Seasonal Air Humidity For the Period 1981-...mentioning

confidence: 99%

Average seasonal humidity trends in the atmospheric boundary layer over Siberia

Lomakina,

Lavrinenko

2023

29th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

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The work presents analysis results of trends in the average seasonal air humidity within the atmospheric boundary layer of Siberia over 1981–2020, estimated from the observation data of 24 aerological stations for winter, spring, summer, and fall. It has been established that the summer season makes the greatest contribution to the increase in the average annual air humidity in the atmospheric boundary layer of the region, especially near the earth's surface, and to a lesser extent − spring and fall. Changes in the average seasonal air humidity for 1981–2020 were compared with the previously studied period 1981–2010.

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“…Let us consider forty-year changes in the anomalies of the water vapor content in the atmospheric boundary layer of Siberia. Figure 1 shows the spatial distribution of the linear trend coefficients of anomalies in the average annual air temperature 20 and water vapor content at four ABL levels over the territory of Siberia. At the ABL level of 400 m, the maximum trends in average annual humidity, as well as in average annual temperature, are observed in the polar regions.…”

Section: Trends In Average Annual Air Humidity For the Period 1981-2020mentioning

confidence: 99%

“…Along with the study of forty-year changes in the average annual air humidity, an assessment was made of the contribution of the last decade (2011-2020) to air humidity changes in the atmospheric boundary layer over the territory of Siberia. For the period 1981−2020 compared to 1981−2010 not only the warming of the atmospheric boundary layer of the Siberian region intensified 20 , but its moisture content also increased in most of the Siberian region territory (Table 1). The increase in air humidity in the atmospheric boundary layer intensified throughout Western Siberia.…”

Section: The Contribution Of the Last Decade To The Change In Air Hum...mentioning

confidence: 99%

Current climate changes in the atmospheric boundary layer over the Siberian region

Lomakina,

Lavrinenko

2023

29th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

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The work presents analysis results of trends in the average annual air humidity in the atmospheric boundary layer of Siberia for 1981−2020 according to observations of 24 aerological stations. It has been established that, in contrast to the average air temperature, which is characterized by positive trends throughout the entire atmospheric boundary layer of Siberia, negative trends in the average annual air humidity are observed from a height of 400 m in the south-west of the territory, and they prevail at 1600 m in Western Siberia to the west 7580 E and, partially, in the subpolar and temperate latitudes of Eastern Siberia. Changes in the average annual air humidity for 19812020 were compared with the previously studied period 19812010. The moisture content in the atmospheric boundary layer over Siberia increased almost throughout the region, with the exception of the central areas of Eastern Siberia, where a slowdown in the growth of air humidity is observed.

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Modern Trends of Temperature of the Atmospheric Boundary Layer over Siberia

Cited by 7 publications

References 8 publications

Long-Term Trends of Extreme Climate Indexes in the Southern Part of Siberia in Comparison with Those of Surrounding Regions

Long-Term Trends of Extreme Climate Indexes in the Southern Part of Siberia in Comparison with Those of Surrounding Regions

Average seasonal humidity trends in the atmospheric boundary layer over Siberia

Current climate changes in the atmospheric boundary layer over the Siberian region

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