Heimo Truhetz in #10: INT2LM on January 22 (#56ab99a)

in #10: INT2LM

<h3> Interpolation with large ratios of grid spacings </h3> <p> Hi all, <br/> I am trying to create initial and lateral boundary conditions for a grid with 300 m grid spacing from a previous convection-permitting simulation with 3 km grid spacing. So, the ratio between the grid spacing is 1:10. </p> <p> <br/> Actually, INT2LM (version 3.0) should do a simple bi-linear interpolation. However, it creates unrealistic plumes and stripes instead of smooth transitions between the centers of the grid cells of the 3 km grid. </p> <p> Do you have any idea,  how this can be solved? </p> <p> Here is a figure that shows QV of the lowest model level with 300 m grid spacing. </p> <p> <img src="/uploads/media/material/600ea1c6-cc43-4b86-be99-7fc018f4352d/Screenshot_from_2024-01-22_16-24-15.png"/> </p> <p> Best, Heimo </p>

  @heimotruhetz in #56ab99a

<h3> Interpolation with large ratios of grid spacings </h3> <p> Hi all, <br/> I am trying to create initial and lateral boundary conditions for a grid with 300 m grid spacing from a previous convection-permitting simulation with 3 km grid spacing. So, the ratio between the grid spacing is 1:10. </p> <p> <br/> Actually, INT2LM (version 3.0) should do a simple bi-linear interpolation. However, it creates unrealistic plumes and stripes instead of smooth transitions between the centers of the grid cells of the 3 km grid. </p> <p> Do you have any idea,  how this can be solved? </p> <p> Here is a figure that shows QV of the lowest model level with 300 m grid spacing. </p> <p> <img src="/uploads/media/material/600ea1c6-cc43-4b86-be99-7fc018f4352d/Screenshot_from_2024-01-22_16-24-15.png"/> </p> <p> Best, Heimo </p>
HT wrote

Interpolation with large ratios of grid spacings

Hi all,
I am trying to create initial and lateral boundary conditions for a grid with 300 m grid spacing from a previous convection-permitting simulation with 3 km grid spacing. So, the ratio between the grid spacing is 1:10.


Actually, INT2LM (version 3.0) should do a simple bi-linear interpolation. However, it creates unrealistic plumes and stripes instead of smooth transitions between the centers of the grid cells of the 3 km grid.

Do you have any idea,  how this can be solved?

Here is a figure that shows QV of the lowest model level with 300 m grid spacing.

Best, Heimo

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