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High-Resolution Observations of a Mesoscale Gravity Wave Event in the Nocturnal Boundary-Layer Over the Netherlands and Belgium
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DOI：10.1029/2025JD046018.png)
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Abstract
En 中文
We present observations of a gravity wave (GW) event over the Netherlands and Belgium in the night and early morning of 30 June 2022. This event was captured by instruments that are part of the meteorological observational network of The Netherlands and Belgium, including the operational weather radars and automatic lidar ceilometers, and by the (tower) in situ and Doppler lidar at the Cabauw atmospheric research station. Together they provide 3D information on the GW event, with detailed information on the vertical profiles from Cabauw, and the spatial extent and evolution from the observational synoptic network. Two distinct GW trains were observed, both interpreted as ducted GW that are trapped in the lowermost 500 m of the stable nocturnal boundary layer. The GWs showed large vertical velocity amplitudes up to 3 m/s, resulting in strong modulations of wind, temperature, humidity and pressure. By comparing our observations to the Copernicus European Regional ReAnalysis (CERRA) wind and temperature fields, we interpret that these GWs were generated by convergence lines over Belgium and the North Sea that was linked to an occlusion front.
Keywords:
gravity waves
nocturnal boundary-layer
remote sensing observations
tower-based in situ observations
microbarometer
weather radar
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J
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3.4
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288
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0
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