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Mechanism of Cross-Seasonal Response of Arctic Temperature to Eurasian Early Spring Snow Loss: The Critical Roles of Soil Moisture and Stationary Wave Propagation.

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Title: Mechanism of Cross-Seasonal Response of Arctic Temperature to Eurasian Early Spring Snow Loss: The Critical Roles of Soil Moisture and Stationary Wave Propagation.
Authors: Ma, Li1,2,3,4 (AUTHOR), Wei, Zhigang1,2,3,4 (AUTHOR) wzg@bnu.edu.cn, Ding, Ruiqiang1,2,3,4 (AUTHOR), Gong, Daoyi1,2,3,4 (AUTHOR), Li, Xianru1,2,3,4 (AUTHOR), Zheng, Zhiyuan5 (AUTHOR)
Source: Journal of Climate. May2026, Vol. 39 Issue 10, p1-11. 11p.
Subjects: Soil moisture, Atmospheric waves, Arctic climate, Energy budget (Geophysics), Climate change
Geographic Terms: Siberia (Russia), Arctic regions, Europe
Abstract: Snow cover can significantly influence climate via modulating surface energy balance, yet its cross-seasonal impacts on Arctic temperatures remain poorly understood. Here, based on diagnostic analysis and numerical experiments, we reveal a robust linkage between reduced early spring (March–April) snow water equivalent (SWE) in northern Europe and increased May-June-July (MJJ) 2m air temperature over the East Siberian-Chukchi Sea during 1951–2022. Specifically, March–April SWE negative anomaly can persist to June and result in drier surface conditions due to reduced snowmelt. It led to elevated turbulent heat fluxes and positive geopotential height anomalies over northern Europe via snow-albedo and snow-hydrological effects during April-May-June. Hence, the eastward-propagating wave train enhanced over northern Europe and reaches South Siberia, causing cyclonic activity and enhanced precipitation. The resultant soil moisture increases persist into MJJ, favoring less sensible heat fluxes, upward wave activity flux, and wave train poleward-propagation. Finally, an anticyclonic anomaly appears over East Siberian-Chukchi Sea, enhancing anomalous descending motion, water vapor and downward longwave radiation, collectively raising near-surface temperatures. Moreover, numerical experiments successfully reproduce this cascade of mechanisms, confirming the physical pathway. Our study provides a new perspective for the studies of the snow cover climate effect, especially its impacts to the Arctic temperature variability. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Climate is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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  Label: Title
  Group: Ti
  Data: Mechanism of Cross-Seasonal Response of Arctic Temperature to Eurasian Early Spring Snow Loss: The Critical Roles of Soil Moisture and Stationary Wave Propagation.
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  Data: <searchLink fieldCode="AR" term="%22Ma%2C+Li%22">Ma, Li</searchLink><relatesTo>1,2,3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wei%2C+Zhigang%22">Wei, Zhigang</searchLink><relatesTo>1,2,3,4</relatesTo> (AUTHOR)<i> wzg@bnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Ding%2C+Ruiqiang%22">Ding, Ruiqiang</searchLink><relatesTo>1,2,3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gong%2C+Daoyi%22">Gong, Daoyi</searchLink><relatesTo>1,2,3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Xianru%22">Li, Xianru</searchLink><relatesTo>1,2,3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zheng%2C+Zhiyuan%22">Zheng, Zhiyuan</searchLink><relatesTo>5</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Climate%22">Journal of Climate</searchLink>. May2026, Vol. 39 Issue 10, p1-11. 11p.
– Name: Subject
  Label: Subjects
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  Data: <searchLink fieldCode="DE" term="%22Soil+moisture%22">Soil moisture</searchLink><br /><searchLink fieldCode="DE" term="%22Atmospheric+waves%22">Atmospheric waves</searchLink><br /><searchLink fieldCode="DE" term="%22Arctic+climate%22">Arctic climate</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+budget+%28Geophysics%29%22">Energy budget (Geophysics)</searchLink><br /><searchLink fieldCode="DE" term="%22Climate+change%22">Climate change</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Siberia+%28Russia%29%22">Siberia (Russia)</searchLink><br /><searchLink fieldCode="DE" term="%22Arctic+regions%22">Arctic regions</searchLink><br /><searchLink fieldCode="DE" term="%22Europe%22">Europe</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Snow cover can significantly influence climate via modulating surface energy balance, yet its cross-seasonal impacts on Arctic temperatures remain poorly understood. Here, based on diagnostic analysis and numerical experiments, we reveal a robust linkage between reduced early spring (March–April) snow water equivalent (SWE) in northern Europe and increased May-June-July (MJJ) 2m air temperature over the East Siberian-Chukchi Sea during 1951–2022. Specifically, March–April SWE negative anomaly can persist to June and result in drier surface conditions due to reduced snowmelt. It led to elevated turbulent heat fluxes and positive geopotential height anomalies over northern Europe via snow-albedo and snow-hydrological effects during April-May-June. Hence, the eastward-propagating wave train enhanced over northern Europe and reaches South Siberia, causing cyclonic activity and enhanced precipitation. The resultant soil moisture increases persist into MJJ, favoring less sensible heat fluxes, upward wave activity flux, and wave train poleward-propagation. Finally, an anticyclonic anomaly appears over East Siberian-Chukchi Sea, enhancing anomalous descending motion, water vapor and downward longwave radiation, collectively raising near-surface temperatures. Moreover, numerical experiments successfully reproduce this cascade of mechanisms, confirming the physical pathway. Our study provides a new perspective for the studies of the snow cover climate effect, especially its impacts to the Arctic temperature variability. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Climate is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1175/JCLI-D-25-0711.1
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 11
        StartPage: 1
    Subjects:
      – SubjectFull: Soil moisture
        Type: general
      – SubjectFull: Atmospheric waves
        Type: general
      – SubjectFull: Arctic climate
        Type: general
      – SubjectFull: Energy budget (Geophysics)
        Type: general
      – SubjectFull: Climate change
        Type: general
      – SubjectFull: Siberia (Russia)
        Type: general
      – SubjectFull: Arctic regions
        Type: general
      – SubjectFull: Europe
        Type: general
    Titles:
      – TitleFull: Mechanism of Cross-Seasonal Response of Arctic Temperature to Eurasian Early Spring Snow Loss: The Critical Roles of Soil Moisture and Stationary Wave Propagation.
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            NameFull: Ma, Li
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            NameFull: Wei, Zhigang
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            – D: 15
              M: 05
              Text: May2026
              Type: published
              Y: 2026
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              Value: 39
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