Added decomposition instread of just ICON grid

lectures/parallelism/slides.qmd

@@ -56,16 +56,29 @@ FIXME
 
 :::: {.columns}
 
-::: {.column width="75%"}
+::: {.column width="50%"}
+
+<br>
 
-![](static/csm_icon_grid_16198badca.jpg){width=100%}
+* Climate model (e.g. ICON) horizontal grid decomposition
+
+:::
+
+::: {.column width="50%"}
+
+![](static/csm_icon_grid_single_noborder_decomp.png){width=100%}
+
+::: {.tiny}
+
+adapted from original image by MPI-M
+
+:::
 
 :::
 
 ::::
 
-ICON model grids: a) Global uniform grid, b) Global grid with locally refined ocean grid, c) Limited area atmosphere-only uniform grid with inside nests.
-Credit: MPI-M
+
 
 # Introducing OpenMP
 * A popular way to parallelize code