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A robust stepwise jump in the Arctic wintertime warming in 2005 coherent with the increased clear-sky downward longwave radiation flux. / Latonin, M.M.; Demchenko, A.Y.
в: Dynamics of Atmospheres and Oceans, Том 108, 101503, 01.12.2024.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - A robust stepwise jump in the Arctic wintertime warming in 2005 coherent with the increased clear-sky downward longwave radiation flux
AU - Latonin, M.M.
AU - Demchenko, A.Y.
N1 - Export Date: 27 October 2024 Сведения о финансировании: Russian Science Foundation, RSF, 23-77-01046 Текст о финансировании 1: This study was funded by the Russian Science Foundation (RSF), grant number 23-77-01046 ( https://rscf.ru/en/project/23-77-01046/ ). The authors are thankful to reviewers and editors whose evaluation helped to improve the quality of the manuscript.
PY - 2024/12/1
Y1 - 2024/12/1
N2 - In some areas of the Arctic, the Earth's surface temperature and near-surface air temperature are rising faster than in others. The purpose of this study is to identify, based on the ERA5 climate reanalysis data, the spatiotemporal structure of climatic changes in the Arctic during 1959–2022. The main emphasis is put on the following three parameters: mean surface clear-sky downward longwave radiation flux, near-surface air temperature, and skin temperature. A statistical model of stepwise changes was applied to the time series of the studied characteristics at each grid point of the entire Arctic (67°N–90°N). The results obtained indicate a close relationship between all parameters in the winter season. The dominant year of stepwise changes in the Arctic is 2005. Moreover, it is precisely this transition from one state of the climate system to another that is statistically significant over a large territory, which is located mainly in the Eastern Hemisphere. The time series averaged over the identified areas are highly correlated with each other, and the year 2005 characterizes the change from a sharp increase in values to their variability without a pronounced trend. The available satellite observations fully confirm the temporal structure of the stepwise changes for the studied parameters and largely confirm its spatial structure. Thus, the clear-sky downward longwave radiation flux is one of the leading factors in the formation of the thermal regime of the Arctic. © 2024 Elsevier B.V.
AB - In some areas of the Arctic, the Earth's surface temperature and near-surface air temperature are rising faster than in others. The purpose of this study is to identify, based on the ERA5 climate reanalysis data, the spatiotemporal structure of climatic changes in the Arctic during 1959–2022. The main emphasis is put on the following three parameters: mean surface clear-sky downward longwave radiation flux, near-surface air temperature, and skin temperature. A statistical model of stepwise changes was applied to the time series of the studied characteristics at each grid point of the entire Arctic (67°N–90°N). The results obtained indicate a close relationship between all parameters in the winter season. The dominant year of stepwise changes in the Arctic is 2005. Moreover, it is precisely this transition from one state of the climate system to another that is statistically significant over a large territory, which is located mainly in the Eastern Hemisphere. The time series averaged over the identified areas are highly correlated with each other, and the year 2005 characterizes the change from a sharp increase in values to their variability without a pronounced trend. The available satellite observations fully confirm the temporal structure of the stepwise changes for the studied parameters and largely confirm its spatial structure. Thus, the clear-sky downward longwave radiation flux is one of the leading factors in the formation of the thermal regime of the Arctic. © 2024 Elsevier B.V.
KW - Climate warming
KW - Longwave radiation
KW - Stepwise changes
KW - Surface temperature
KW - The Arctic
KW - Atmospheric temperature
KW - Clear sky
KW - Long-wave radiation
KW - Near surface air temperature
KW - Radiation fluxes
KW - Stepwise change
KW - Surface temperatures
KW - The arctic
KW - Times series
KW - Wintertime warming
KW - Miocene
UR - https://www.mendeley.com/catalogue/4e33de96-e7ef-3a51-8b75-bf0ea00aa074/
U2 - 10.1016/j.dynatmoce.2024.101503
DO - 10.1016/j.dynatmoce.2024.101503
M3 - статья
VL - 108
JO - Dynamics of Atmospheres and Oceans
JF - Dynamics of Atmospheres and Oceans
SN - 0377-0265
M1 - 101503
ER -
ID: 126460876