January 2026 performance summary for GEOS-ESM development teams. Key focus areas were delivering robust data processing capabilities, establishing CI/CD governance, and expanding satellite data support across swell and GEOSadas. Business value delivered includes more accurate IASI data handling through error parameter vectors for Metop-B/C and seamless integration of the BFR converter into IODA, strengthened code quality and collaboration via CI/CD pipelines and governance in GEOSadas, and broader data coverage through VIIRS and NOAA-20 support. Additionally, stability and data management improvements enhance operational reliability and reduce maintenance overhead.

October 2025 monthly summary for GEOS-ESM/swell focused on compatibility and build-path updates to align swell with the JEDI/UFO framework, enabling stable integration with updated components and NCCS Discover workflows. The work reduces deployment risk and prepares the system for upcoming component upgrades.

August 2025 performance summary focusing on delivering business Value and technical accomplishments. Key initiatives included expanding data accessibility through a new SABER TIMED data ingestion converter for IODA, and refining snow/ice surface physics to improve model stability under varying temperature conditions. The efforts enhanced data interoperability, reduced manual integration steps, and strengthened the reliability of ice-fracture related calculations across snow and ice surfaces. Build-system automation and validation were improved to ensure smooth deployment of new tools across CI and production environments.

July 2025 monthly summary for GEOS-ESM/swell: Focused on configuration hygiene and data-file governance within SWELL. Centralized the fv3files linkage configuration to allow SWELL to directly manage peripheral data files, improving data control and organization for the GEOS interface. Removed the deprecated air_pressure_thickness field (alias delp) from multiple configuration files to reduce confusion and potential misconfiguration in background and analysis models. These changes enhance reliability, maintainability, and data governance across SWELL-enabled workflows.

June 2025 performance summary for GEOSadas and swell: Delivered substantial performance, reliability, and data-processing improvements that enable more scalable workflows and richer observations. Key GEOSadas work includes parallelization for the 4D workflow with hybrid/parallel submissions, updates to Jedi run/configuration, and added YAML changes to reflect the new flow; introduction of 3D pressure data processing via air_pressure_levels; standardization of cubed analysis output naming and instrument configurations; and essential maintenance updates to build paths and version tags. In swell, implemented generalized bias correction for AMSUA/ATMS channels, added OMPS-LP support (N21/NPP) with IODA mappings, synchronized RO sources with the 5.42x baseline, introduced IO pool sizing with a max of 6 and missing-file warning actions to improve reliability, and fixed AVHRR Metop-C configuration to ensure ncdiag conversion works. These efforts collectively improve data quality, processing throughput, and stability across workflows, enabling faster decision-making and broader observational coverage. Technologies demonstrated include parallel computing, YAML-driven configuration, IODA instrument mappings, IO pool tuning, and cross-repo release hygiene.

May 2025 performance summary for GEOS-ESM codebase across GEOSadas and swell repositories. Focused on expanding data assimilation capabilities, stabilizing GSI/JEDI workflows, and aligning FV3-JEDI environment to latest tools for improved forecast accuracy and operational reliability.

April 2025 monthly summary for GEOSadas focused on delivering end-to-end JEDI-based data assimilation enhancements and automation. Highlights include integration of JEDI workflow with GEOSdas, enabling 3dfgat assimilation, cycling capability, and expanded observation operator mappings; addition of input/output path updates, environment variable handling, and new configuration files; and an option to bypass GSI analysis to streamline workflows. The work progressed from initial setup improvements through to actual 3dfgat implementation and automated setup, with ongoing alignment to SWELL for JEDI version consistency.

March 2025 monthly summary focusing on business value and technical achievements across GEOS-ESM repositories. Delivered features enabling more accurate data assimilation, improved resource management for MPI runs, and strengthened release readiness and grid IO capabilities. Implemented critical bug fixes to improve data integrity and reliability, reducing run-time errors and ensuring consistent results for downstream users.

February 2025 monthly summary for GEOS-ESM/swell focused on stability and deterministic configuration. Implemented a critical fix by pinning the default MKS I Path Tag to g5.41.3, preventing version drift and ensuring reproducible MKS I configurations across environments and experiments. The change is tied to a targeted commit to reinforce reproducibility and alignment with release tagging.

January 2025 performance summary focusing on critical configuration fixes across two GEOS repositories, delivering improved data quality, stable Jo metrics, and correct temporal resolution for C720 simulations.

December 2024 highlights: Strengthened data assimilation configuration and build/run reliability across GEOS-ESM repositories, delivering measurable improvements in assimilation accuracy, data handling, and operational reproducibility. Key work included: Data Assimilation Configuration Enhancements for JEDI in swell; GEOSadas prePP/FPP configuration and data path updates; NCEP_bkgecov build/run refinements; GCM Ensemble startup cleanup to ensure clean restarts. These efforts reduce risk, streamline workflows, and enable faster, more reliable forecast experiments. Demonstrated skills: cross-repo collaboration, CMake/Fortran build optimization, SBATCH workflow management, and data assimilation governance.

November 2024 produced substantive improvements in GEOSadas, delivering performance, reliability, and maintainability gains that directly support expanded capabilities and more robust daily operations. Key changes spanned parallel execution for post_egcm submissions, corrected statistics generation workflows, enhanced variance-based analytics, improved ensemble post-processing and diagnostics, and updated cross-repo dependencies with efficient management practices.

October 2024 focused on refining distributed processing for ensemble workflows and improving environment compatibility, with targeted fixes and feature work across GEOSadas and swell. Notable progress includes a proto-implementation of Slurm array-based distribution for GEOSadas, followed by a stabilization decision to revert to the prior submission paradigm to reduce restart complexity; a new efficient EnKF task distribution approach with dynamic scripts to optimize core usage; a bug fix in observer configuration by safely copying RC files to a temporary location before activation; alignment of component tags, versions, and environment settings to ensure compatibility with the 11.6x model and Intel/SLES15 environments; and hydrometeor support added to swell’s observation types and analysis variables, expanding the data assimilation capabilities.