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Shaded Contours: Probability of Exceedance in 6h-Mean Precipitation Rate over 1mm/hr, Red Lines: Identified Wave Troughs
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The wave troughs are identified similar to Belanger, J.I., Jelinek, M.T. and Curry, J.A. (2016), A climatology of easterly waves in the tropical Western Hemisphere. Geoscience Data Journal 3: 40–49 (doi.org/10.1002/gdj3.40)
A climatology of curvature vorticity at 700hPa was derived from ERA-5 data and interpolated to 1.0° resolution. The forecast data for the 700hPa wind field was coarsened to 1.0° resolution before the trough detection but the probability of exceedance of the 6h-mean precipitation rate was plotted at 0.4° resolution for ECMWF-ENS and 0.25° resolution for GEFS. Source code for the identification and tracking is available here.
The implementation of the wave trough identification and scripting for the maps production was done by Christoph Fischer. The forecast data download, page design and navigation logic was done by Marco Wurth.
The work was supported by the DFG Transregio Waves to Weather: www.wavestoweather.de
A climatology of curvature vorticity at 700hPa was derived from ERA-5 data and interpolated to 1.0° resolution. The forecast data for the 700hPa wind field was coarsened to 1.0° resolution before the trough detection but the probability of exceedance of the 6h-mean precipitation rate was plotted at 0.4° resolution for ECMWF-ENS and 0.25° resolution for GEFS. Source code for the identification and tracking is available here.
The implementation of the wave trough identification and scripting for the maps production was done by Christoph Fischer. The forecast data download, page design and navigation logic was done by Marco Wurth.
The work was supported by the DFG Transregio Waves to Weather: www.wavestoweather.de