Articles | Volume 14, issue 11
https://doi.org/10.5194/gmd-14-6765-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-14-6765-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Methods for assessment of models
| 
05 Nov 2021
Methods for assessment of models |
| 05 Nov 2021
| 05 Nov 2021
Verification of boundary layer wind patterns in COSMO-REA2 using clear-air radar echoes
Sebastian Buschow
CORRESPONDING AUTHOR
Institute of Geosciences, University of Bonn, Bonn, Germany
Petra Friederichs
Institute of Geosciences, University of Bonn, Bonn, Germany
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This preprint is open for discussion and under review for Earth System Dynamics (ESD).
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We analyze the duration of large-scale weather patterns and their link to near-surface temperatures during heatwaves in Central Europe for 1950–2023. Compared to non-heatwave days, a stronger link between them is found on heatwave days from May to September. We relate our results to typical long-lasting weather patterns known as weather regimes. In July and August, weather patterns last longer as west winds are often blocked by Scandinavian and European blocking regimes, inducing hot extremes.
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We analyze the duration of large-scale weather patterns and their link to near-surface temperatures during heatwaves in Central Europe for 1950–2023. Compared to non-heatwave days, a stronger link between them is found on heatwave days from May to September. We relate our results to typical long-lasting weather patterns known as weather regimes. In July and August, weather patterns last longer as west winds are often blocked by Scandinavian and European blocking regimes, inducing hot extremes.
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Short summary
When insects fill the lower kilometers of the atmosphere, they get caught in the convergent parts of the wind field. Their concentration visualizes the otherwise invisible circulation on radar images. This study shows how clear-air radar data can be compared to simulated wind fields in terms of scale, anisotropy, and direction. Despite known difficulties with simulating these near-surface wind systems, we find decent agreement between a long-term simulation and the German radar mosaic.
When insects fill the lower kilometers of the atmosphere, they get caught in the convergent...
