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Jian Sun

PROFILE

Jian Sun

Contributed to climate modeling and high-performance computing projects by enhancing documentation and stabilizing GPU workflows. Improved the NCAR/musica repository’s tutorial on user-defined reactions, clarifying that reaction rates are provided directly and refining guidance for ambiguous observational scenarios. This work, implemented in Jupyter Notebook and Fortran, strengthened onboarding and reproducibility for new users. In the ESCOMP/atmospheric_physics repository, addressed a broken GPU test in the CAM model’s RRTMGP gas optics calculation by removing unnecessary memory allocation and directly accessing mass mixing ratios, which improved test reliability without impacting performance. Demonstrated technical writing, Fortran, and GPU computing skills across both projects.

Overall Statistics

Feature vs Bugs

50%Features

Repository Contributions

3Total
Bugs
1
Commits
3
Features
1
Lines of code
11
Activity Months2

Work History

October 2025

1 Commits

Oct 1, 2025

October 2025 monthly summary for ESCOMP/atmospheric_physics: Delivered a focused bug fix to stabilize the CAM GPU path in the RRTMGP gas optics calculation. The fix simplifies the gas optics calculation by removing an unnecessary allocation for gas_mmr and directly accessing rad_const_array for the mass mixing ratio, addressing a broken GPU test and reducing flaky test failures. Commit: 0f2e4afd1a54b41dc6d8529b9c25281114c87a7e (Fix broken RRTMGP GPU test in CAM (#316)).

June 2025

2 Commits • 1 Features

Jun 1, 2025

June 2025 monthly summary for NCAR/musica focused on tutorial clarity and onboarding improvements around user-defined reactions. No major bugs fixed this month; efforts concentrated on documentation quality and user guidance to accelerate adoption and reproducibility.

Activity

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Quality Metrics

Correctness93.4%
Maintainability93.4%
Architecture93.4%
Performance93.4%
AI Usage20.0%

Skills & Technologies

Programming Languages

FortranJupyter Notebook

Technical Skills

Climate ModelingDocumentationFortranGPU ComputingHigh-Performance ComputingTechnical Writing

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

NCAR/musica

Jun 2025 Jun 2025
1 Month active

Languages Used

Jupyter Notebook

Technical Skills

DocumentationTechnical Writing

ESCOMP/atmospheric_physics

Oct 2025 Oct 2025
1 Month active

Languages Used

Fortran

Technical Skills

Climate ModelingFortranGPU ComputingHigh-Performance Computing