CPAS v1.2.0

5 Jun 2024

New Features:

  • P3 (Predicted Particle Properties) Microphysics scheme is available in Real Simulation.

CPAS v1.1.1

6 Sep 2023


  • Fix the damping coefficient at the upper gravity-wave absorbing layer.

CPAS v1.1.0

13 Apr 2023


  • Major enhancement in HTS algorithm, saving overhead
  • Improved scalability


CPAS v1.0.0

30 Jun 2022

New Features:

  • Shin-Hong PBL scheme is available in Real Simulation.
  • 3 arc-second geographical data (terrain, landuse, soiltype) will be used for regions with grid spacing shorter than 2km.



  • Fixed multi-threading issues in parameterization schemes (scale-aware new Tiedtke, scale-aware Tiedtke, YSU).


CPAS v0.17.0

6 Jan 2022

New Features:

  • A configuration item is added to HTS workload options of mesh generation jobs to specify the factor for assigning time-step (s/km).



  • The formulation of damping coefficient is changed to one that works well over very large resolution variation.
  • Fix the relaxation coefficients for the relaxation zone in limited-area simulations for HTS.


CPAS v0.16.1

11 Nov 2021


  • The algorithm that populates green fraction, albedo and snow albedo data to the mesh's static data is enhanced to work well in very high resolution regions.


CPAS v0.16.0

19 Oct 2021

New Features:

  • Limited-area Real Simulation
  • Copy-and-paste function for refinement and limited-area regions in Mesh Specification
  • (Update 26 Oct 2021) The Jupyter visualization tools have better memory management.



  • The atmospheric model is based on MPAS-A v7.1


CPAS v0.15.0

13 Jul 2021

New Features:

  • Support specifying the set of output variables for Real Simulation jobs
  • FDDA options for Real Simulation jobs
  • Limited-area Mesh Generation (Limited-area Real Simulation pending)



  • The atmospheric model is based on MPAS-A v7.0
  • The meshDensity field of generated mesh is changed to follow that of the generated mesh rather than the target resolutions specified.
  • The assignment of time steps to HTS levels is changed to use larger time steps
  • Scale-aware convection schemes: new Tiedtke, Tiedtke


CPAS v0.13.0

9 Dec 2020

New Features:

  • Added the choice of model version 
  • Added the choice of physics suite and YSU options


CPAS v0.11.1

6 Nov 2020


  • Fixed a bug in processing landmask 
  • Fixed the update of running status of mesh generation jobs


CPAS v0.11.0

16 Oct 2020

New Features:

  • Added an experimental Shallow Water Test feature.
  • Added PBL scheme options in Real Simulation.



  • Fixed wind barb in plot_diag_contour() in the Jupyter visualization system.
  • For the Grell-Freitas convection scheme, removed the unnecessary switching off for small cells.


CPAS v0.10.0

20 Jul 2020

New Features:

  • Added HTS chart and globe in mesh generation report
  • Optimized mesh generation by automatically rotating the initial icosahedron before refinement



  • Fixed the population of varsso data in the init_atmosphere step


CPAS v0.7.2

3 Mar 2020

New Features:

  • Revised mesh generation algorithm that improved conformance to finest resolution


CPAS v0.6.0

7 Jan 2020

New Features:

  • Deleting unwanted jobs and results


CPAS v0.4.0

25 Nov 2019

New Features:

  • Real simulation
  • Result visualization with Jupyter Notebook



  • The algorithm for customized mesh generation is changed from JIGSAW-GEO-based to OLAM-based


CPAS v0.3.2

31 May 2019


  • Customized mesh generation