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Land‐Atmosphere Cascade Fueled the 2020 Siberian Heatwave
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2022
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Source: AGU Advances, 3(6)
[PDF-1.57 MB]
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Journal Title:AGU Advances
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Description:A heatwave in Siberia starting in January 2020, initiated by a wave 5 pattern in the jet stream, caused the surface air temperature to reach 38°C in June with important impacts on ecosystems and water resources. Here we show that this dynamical setup started a chain of events leading to this long-lasting and unusual event: positive temperature anomalies over Siberia caused early snowmelt, leading to substantial earlier vegetation greening accompanied by decreased soil moisture and browning in the summer. This soil moisture depletion and vegetation browning, in turn, increased the impact of the heatwave on the atmosphere through a land-atmosphere feedback. This line of evidence suggests that large-scale dynamics and land-atmosphere
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Source:AGU Advances, 3(6)
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DOI:
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ISSN:2576-604X;2576-604X;
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Rights Information:CC BY-NC
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Compliance:Library
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