revert figures arrangement to be independent

src/docs/JOSS/paper.md

@@ -144,9 +144,9 @@ Often these simulations involve coupling between compositional multiphase flow a
 As an example of a field case where GEOS has been applied, we present a simulation of CO2 storage at a large real-world storage site.
 Figure \ref{RW_mesh} illustrates the computational mesh and relevant problem size and physical dimensions.
 
-![Discrete mesh of a real world CO2 storage site. Transparency is used for the overburden region to reveal the complex faulted structure of the storage reservoir.\label{RW_mesh}](RW_mesh.png){ width=40% }
+![Discrete mesh of a real world CO2 storage site. Transparency is used for the overburden region to reveal the complex faulted structure of the storage reservoir.\label{RW_mesh}](RW_mesh.png){ width=80% }
 
-![Results of a compositional flow simulation of a real world CO2 storage site.\label{RW_results}](RW_results2.png){ width=40% }
+![Results of a compositional flow simulation of a real world CO2 storage site.\label{RW_results}](RW_results2.png){ width=80% }
 
 
 As an example of the weak scalability of GEOS on exascale systems, we present two weak scaling studies on a simple wellbore geometry using the exascale Frontier supercomputer located at Oak Ridge National Laboratory.
@@ -155,6 +155,7 @@ There is a moderate decrease in efficiency with the application of the hypre pre
 The compositional flow study presented in Figure \ref{fig:Frontier_CMPF} shows similarly good weak scaling. 
 
 ![Weak scaling results for mechanics on ORNL/Frontier.\label{fig:Frontier_Mechanics}](GEOS_Frontier_mechanics.pdf){ width=40% }
+
 ![Weak scaling results for compositional flow on ORNL/Frontier.\label{fig:Frontier_CMPF}](GEOS_Frontier_compositional.pdf){ width=40% }
 
 # Acknowledgements