Semenova et al. (2026) Spatiotemporal Characteristics and Synoptic Patterns of Dry‐Hot Winds ( Sukhoviys ) in Ukraine

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Identification

• Journal: International Journal of Climatology
• Year: 2026
• Date: 2026-08-11
• Authors: Inna Semenova, Sergio M. Vicente‐Serrano
• DOI: 10.1002/joc.70553

Research Groups

Not specified in the provided text.

Short Summary

This study characterizes "sukhoviys" (dry-hot winds) in Ukraine from 1973 to 2025, identifying a predominance of short-duration events and an increasing trend in high-temperature episodes since 2007.

Objective

• To identify and analyze the frequency, duration, spatial extent, and atmospheric circulation patterns of sukhoviy events across Ukraine.

Study Configuration

• Spatial Scale: National (Ukraine), based on 34 meteorological stations.
• Temporal Scale: 1973–2025.

Methodology and Data

• Models used: Sukhoviy Station Index (SSI) and Sukhoviy-Day Index (SDI).
• Data sources: Observational data from 34 meteorological stations.
• Event Definition: Air temperature $\ge 25\text{ °C}$, relative humidity $\le 30\%$, and wind speed $\ge 5\text{ m s}^{-1}$.

Main Results

• Temporal Distribution: Peak activity occurs in July and August, averaging 3–4 days per month with temperatures typically $\ge 30\text{--}32\text{ °C}$.
• Duration and Extent: 67% of events are short (1–2 days), while 3% are prolonged ($\ge 10$ days), with the latter potentially affecting 16–19 stations simultaneously.
• Trends: An increase in the number of sukhoviy days with temperatures exceeding $30\text{ °C}$ has been observed at several stations since 2007.
• Circulation Patterns: Events are primarily driven by easterly air-mass advection, southerly advection, and the eastward extension of anticyclonic ridges from the west.

Contributions

• Provides a comprehensive catalogue of sukhoviy episodes in Ukraine and introduces the use of SSI and SDI to quantify the intensity and spatial impact of these agricultural-stress-inducing winds.

Funding

Not specified in the provided text.

Citation

@article{Semenova2026Spatiotemporal,
  author = {Semenova, Inna and Vicente‐Serrano, Sergio M.},
  title = {Spatiotemporal Characteristics and Synoptic Patterns of Dry‐Hot Winds ( <i>Sukhoviys</i> ) in Ukraine},
  journal = {International Journal of Climatology},
  year = {2026},
  doi = {10.1002/joc.70553},
  url = {https://doi.org/10.1002/joc.70553}
}