General announcements

• Next meeting in two weeks (no special topic for next week's time slot)
• Send in any special topics you are interested in presenting and discussing

Infra - Evan

• Ashley added a new ingest suite for ERA5 Analysis
• Evan and others are looking into doing EWOK tasks in a Singularity container
• Good progress with test and installation automation for R2D2 (Eric, SteveG)

Interfaces - Liam

• Raji submitted two PRs
  • C++ implementation of surface pressure operator using the UKMO and GSL schemes
  • Updates to filters for better traceability using the oops::Log::trace() channel
• SteveH and SteveV are working on the new IODA reader refactoring and integration of the new ObsSpace DataFrame
  • New reader steps: Load (file I/O), Filter, Distribute
  • Filter step implementation is done, Load (SteveH) and Distribute (SteveV) steps are work in progress
• Met Office contributed a IODA parallel ODB reader (in develop)
• NOAA-EMC contributed a IODA parallel BUFR reader (PR under review)
• Many thanks to our partners for these valuable contributions
• Liam is continuing work on GPU offloading in Atlas, Ectrans for various steps including adjoint, inverse, etc.

Algo - Clementine

• Christian is back from PTO and is working on the continuous DA capability
• Nate is adding a feature for writing out lat, lon files from any model which will be used to compute scores
• Clementine
  • Adding capability to compute scores using WeatherBench
  • Assisted with work to run EWOK tasks in a Singularity container
  • Cleaning up the EWOK repo, including removing obsolete code

COMPO - Jerome

• PRs submitted for ingest of new aerosol obs types

Marine - Kriti

• Work in progress with 4DVar, HTLM

OBS - BenR

• Github discussion (https://github.com/orgs/JCSDA-internal/discussions/171) for extending the ground based radar operators
• Ocean surface wind converter (GNSSR, COWVR)
  • Ashley helped out with the COWVR radiance ingest suite
  • This provides a nice guide for further ingest suite development
• SSMIS unit test updates
• Ncdiag converter updates including a fix for an issue with azimuth angle metadata
• Contributions from partners:
  • Mean gaussian filter which can be used for actions such as super-obb'ing
  • Work in progress to reduce spatial density of GeoVaLs
  • Various UFO bug fixes from Jianjun

CRTM - Cheng

• CRTM V3.2, final check for all instrument coefficients in netCDF format.
• New coefficients generation for PACE
• Bug fix:
  • azimuthal-dependent calculation for CRTM Jacobians (visible channels)
  • surface emissivity Jacobians (UFO QC tests)

NOAA-EMC - Dan

• Focus is on testing and qualifying flows including ones that use JEDI
  • Realtime runs
  • Reproducibility checks
    • Good results in general
    • Some obs types are showing poor results and are being investigated
      • H(x) differences of 10's of Kelvin, has some dependency on the number of MPI tasks being used
    • Plan moving forward is to dump out quantities in single precision and call it good when differences are within roundoff errors
  • Qualification with entire workflows in underway
• Cleaning up the build processes including eliminating forked repos (eg, MOM6)
• Moved to spack-stack-1.9.1
  • Ron's parallel BUFR reader PR has been waiting for spack-stack-1.9.1 and is now ready for review

GMAO - Ricado

• Checking GSIBEC results and will keep EMC updated
• Finishing up work with Francois H. to implement interpolator changes needed by GSIBEC
• Wrapping up fixes for CO2 UFO operator issues
• Put knobs into GMAO workflow for cycling DA
• Seeing good results with SWELL
• Starting to look into ingesting SABER(?) obs into JEDI
  • Measurements from mesosphere, upper stratosphere
  • Have a converter to BUFR, working on path to ingest in JEDI

MMM - ChrisS

• Developing/updating reference configs for workflows
• Prep for MPAS-JEDI tutorial scheduled for this June in Scotland
• Updated obs2ioda converter to directly output IODA V3 format
• Working on hourly cycling in DA flows

Met Office - MikeC

• We don't have any updates from the UKMO this week which were not part of the quarterly review.
  • We have had bank holidays over the easter period. 
• In terms of general work:

  • We continue to implement JEDI operationally for the observation processing and the trialing looks good

    • This is planned for operational implementation at the end of 2025  

  • We are currently testing working on HTLM, hybrid-B, multi resolution testing in preparation for our next generation HPC benchmarking exercise

    • Due later in 2025

OAR - no update

ROMS - HernanA

• Qualifying more realistic 4DVar flows
  • Error analysis
  • Looking at innovation, increments, background variance, etc.
  • Working out tuning and calibration for the flows

NRL - no update