Weather and Climate Dynamics
Weather and Climate Dynamics
WCD
Articles | Volume 5, issue 1
Articles | Volume 5, issue 1
https://doi.org/10.5194/wcd-5-263-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wcd-5-263-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 5, issue 1
Research article
 | 
22 Feb 2024
Research article |  | 22 Feb 2024

Persistent warm and cold spells in the Northern Hemisphere extratropics: regionalisation, synoptic-scale dynamics and temperature budget

Alexandre Tuel and Olivia Martius

Data sets

The ERA5 global reanalysis (https://doi.org/10.24381/cds.bd0915c6) H. Hersbach et al. https://doi.org/10.1002/qj.3803

Model code and software

ConTrack - Contour Tracking of circulation anomalies in weather and climate data D. Steinfeld https://doi.org/10.5281/ZENODO.4765560

avatar101/R-metric S. M. Ali https://doi.org/10.5281/zenodo.5742810

Analysis of persistent warm and cold spells A. Tuel https://doi.org/10.5281/ZENODO.10680180

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Short summary
Warm and cold spells often have damaging consequences for agriculture, power demand, human health and infrastructure, especially when they occur over large areas and persist for a week or more. Here, we split the Northern Hemisphere extratropics into coherent regions where 3-week warm and cold spells in winter and summer are associated with the same large-scale circulation patterns. To understand their physical drivers, we analyse the associated circulation and temperature budget anomalies.
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