Embedded Files
SE1: Squall Line
Motivating question: is the squall sensitive to stretching the grid vertically in areas of interest?
Motivating question: is the squall sensitive to stretching the grid vertically in areas of interest?
Summary: yes - wave speed and intensity increase when grid is refined around the initial perturbation
Summary: yes - wave speed and intensity increase when grid is refined around the initial perturbation
6-hour animations of squall line with constantly-spaced vertical grid
6-hour animations of squall line with constantly-spaced vertical grid
Temperature perturbation (red = warmer)
Temperature perturbation (red = warmer)
Zonal wind perturbation (blue = stronger westerly wind)
Zonal wind perturbation (blue = stronger westerly wind)
Vertical cross-section (longitude-pressure)
Pressure level cross-section (longitude-latitude)
Vertical velocity perturbation (red = stronger updrafts)
Vertical velocity perturbation (red = stronger updrafts)
Vertical cross-section (longitude-pressure)
Pressure level cross-section (longitude-latitude)
Suite of vertical grids
Suite of vertical grids
Constant-height grid
Maximum compression at 4000 m
Maximum compression at 0 m
Comparison of constant-spaced and 4000m-compressed grids
Comparison of constant-spaced and 4000m-compressed grids
Zonal wind: compressed grid at bubble-height simulates stronger and faster surface gust fronts
Zonal wind: compressed grid at bubble-height simulates stronger and faster surface gust fronts
Vertical velocity: compressed grid at bubble-height simulates stronger front updrafts
Vertical velocity: compressed grid at bubble-height simulates stronger front updrafts
Temperature: compressed grid at bubble-height results in cooler surface temperatures
Temperature: compressed grid at bubble-height results in cooler surface temperatures
Comparison of 4000m-compressed and 0m-compressed grids
Comparison of 4000m-compressed and 0m-compressed grids
Zonal wind: surface grid simulates weaker & slower surface gust fronts relative to 4000 m grid
Zonal wind: surface grid simulates weaker & slower surface gust fronts relative to 4000 m grid
Vertical velocity: surface grid reduces wave speed and changes wave shape relative to 4000 m grid
Vertical velocity: surface grid reduces wave speed and changes wave shape relative to 4000 m grid
Temperature: compressed grid at bubble-height results in cooler surface temperatures
Temperature: compressed grid at bubble-height results in cooler surface temperatures
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