Pangeo Community Weekly Meeting
Join the meeting: NumFocus Zoom Link
Archived Pangeo Weekly check-in notes from 2018-2025!
2026-05-13 (9am PT; 12pm ET, 1600 UTC)
Attendees: Name / Institution / @GitHub:
- Max Jones / Development Seed / @maxrjones
- Rich Signell
- Henry Rodman
- Len Strnad
- Caleb Robinson
- Issac Corley
- Amy Steiker
- Eli Homes
Showcase Talk (15-25 min): Lightning talks!!!
- Discussion
60 Second Updates:
- Max J:
- Rich S:
Agenda Items:
- TBD
2026-04-08 (1pm PT; 4pm ET; 2000 UTC)
Attendees: Name / Institution / @GitHub:
- Paige Martin / Australia’s Climate Simulator / @paigem
- Scott Henderson / UW eScience / @scottyhq
- Harsha Hampapura / NSF NCAR/ @hrhampapura
- Justus Magin / LOPS / @keewis
- Rich Signell / Open Science Computing, LLC/ @rsignell
- Chuck Daniels / Development Seed / @chuckwondo
- Tom Augspurger / NVIDIA / @TomAugspurger
- Ian Carroll / NASA/GSFC / @itcarroll
- Max Jones / Development Seed / @maxrjones
- Luis Lopez / NSIDC / @betolink
- Raphael Hagen / CarbonPlan / @norlandrhagen
- Wei Ji Leong / Development Seed / @weiji14
- Will May / ASRC / @wmay
- Tom Nicholas / Earthmover / @TomNicholas
- Nick Hodgskin / Utrecht University / @VeckoTheGecko
Showcase Talk (15-25 min): Scott Henderson - “GitHub as a cloud portal for reproducible research workflows”
- Discussion
- Slide Deck is Here https://docs.google.com/presentation/d/1MFFS3MhDR081a0D-fmNYAZ06iGIIAZRERB_sSP0PMTw/edit?usp=sharing
60 Second Updates:
- Rich: topozarr/zarr-layer fun, Teaching/Training in the age of agentic coding
- Paige: Australian climate modelling community has a Community Forum (ACCESS-Hive Forum) similar to Pangeo Discourse
- Nick: Building tooling in Parcels for transmitting example datasets via GH issues, and (separately) working on a benchmarking pipeline for simulations and reporting
- Tom N: Icechunk 2.0 is out! (blog post coming tomorrow)
- Justus: using zizmor to clean up the github actions setup of xarray
Agenda Items:
- TBD
2026-04-01 (9am PT; 12pm ET, 1600 UTC)
Attendees: Name / Institution / @GitHub:
- Max Jones / Development Seed / @maxrjones
- Tom Augspurger / NVIDIA / @TomAugspurger
- Raphael Hagen / CarbonPlan / @norlandrhagen
- Negin Sobhani / NSF-NCAR / @negin513
- Chuck Daniels / Development Seed / @chuckwondo
- Justus Magin / LOPS / @keewis
- Wietze Suijker / Mila (IVADO) / @wietzesuijker
- Scott Henderson / UW eScience / @scottyhq
- Kyle Barron / Development Seed / @kylebarron
- Tom Nicholas / Earthmover / @Tomnicholas
Showcase Talk (15-25 min): Tom Augspurger - GPU-Accelerated Zarr; slides
- Discussion
60 Second Updates:
- Max
- Showcase next week on “GitHub as a cloud portal for reproducible research workflows” by scottyhq
- Got a Google Workspace for Pangeo, so a shared drive and email address is available for those who need it. Will also be revamping the pangeo calendar
- Scott: NSF’s CloudBank project now offers multi-cloud access to any US-based educator or researcher. Can be an easy way to access general AWS, Azure, Google account https://www.cloudbank.org/
- Short application, up to $10k / year for basic projects, bigger application for larger projects
- Kyle
- Working on deck.gl-raster zarr
- Raphael
- Check out https://zarr-layer.demo.carbonplan.org/
- Wietze:
- Adding Multiscales to AlphaEarth Foundations GeoZarr Mosaic
- RFC: https://github.com/geospatial-jeff/aef-mosaic/issues/23
- Max
- Zarr explorer and validator -https://inspect.geozarr.org/
- .
Agenda Items:
2026–03-25 (1pm PT; 4pm ET; 2000 UTC)
Attendees: Name / Institution / @GitHub:
- Justus Magin / LOPS / @keewis
- Raphael Hagen / CarbonPlan / @norlandrhagen
- Wei Ji / DevSeed / @weiji14
- Leon Foks / Contractor USGS / @leonfoks
Updates:
- Raphael
- Working on testing ‘hybrid’ multiscales datasets for Zarr-layer.
- Virtualizarr (netcdf?) base, multiscale icechunk above from topozarr.
- Justus
- Refactored healpix-geo into a rust crate + python wrappers
2026–03-11 (1pm PT; 4pm ET; 2000 UTC)
Attendees: Name / Institution / @GitHub:
- Max Jones / Development Seed / @maxrjones
- Shane Loeffler / CarbonPlan
- Tyler Erickson / VorGeo /@tylere
- Aimee Barciauskas / Development Seed / @abarciauskas-bgse
- Wietze Suijker / IVADO / @wietzesuijker
- Raphael Hagen / CarbonPlan / @norlandrhagen
- Justus Magin / LOPS / @keewis
- Julia Signell / Element 84 / @jsignell
- Chuck Daniels / Development Seed / @chuckwondo
- Paige Martin / Australia’s Climate Simulator / @paigem
- Im
- Diego Ripley / Data for Canada / @diegoripley
- Jay Alder / USGS / jalder@usgs.gov
- Jacopo Hirschstein / TEKJA
- Tom Nicholas / Earthmover
- Tom Augspurger / NVIDIA / @TomAugspurger
- Sean Harkins / Development Seed / @sharkinsspatial
- Wei Ji Leong / Development Seed / @weiji14
- Thomas Moore / CSIRO / @Thomas-Moore-Creative
- Tyler Anderson / Element 84 / @tylanderson
- Kata Martin / CarbonPlan / @katamartin
Showcase Talk (15-25 min): Shane Loeffler - Visualizing Zarr with zarr-layer
- Discussion
60 Second Updates:
- Wei Ji:
- Working on new TIFF to GPU backend entrypoint in cupy-xarray - https://github.com/xarray-contrib/cupy-xarray/pull/81
- Diego Ripley
- Bringing in 27TB+ of orthoimagery for Quebec, Canada to Source Cooperative
- Paige Martin
- SciPy 2026 is looking for proposal reviewers for the Environmental, Earth, and Climate track. Sign up here if interested: https://docs.google.com/forms/d/e/1FAIpQLSeJgVC4Uax6oP-fdXvEaCbLfWwCc5yuc2Z4s6DzOHoUFu5rJA/viewform
- Tom N
- Working towards Icechunk V2
- Shane
Agenda Items:
- TBD
2026-03-04 (9am PT; 12pm ET, 1600 UTC)
Attendees: Name / Institution / @GitHub:
- Max Jones / Development Seed / @maxrjones
- Rich Signell / Open Science Computing / @rsignell
- Wietze Suijker / IVADO / @wietzesuijker
- Sarah Zwiep / Floodbase / @szwiep
- Chuck Daniels / Development Seed / @chuckwondo
- Justus Magin / LOPS / @keewis
- Kevin Sampson / ASO / @ksampson-aso
- Julia Signell / Element 84 / @jsignell
- Scott Henderson / UW eScience / @scottyhq
- Diego Ripley / Data for Canada / @diegoripley
Showcase Talk (15-25 min): Wietze Suijker - No shard feelings: GeoZarr rendering in QGIS, powered by GDAL”
- Discussion
60 Second Updates:
- Julia:
- Thinking about how to handle `bool(xr.Dataset)`
- Xarray is supposed to work with Pandas 3 - if it doesn’t raise an issue!
- Max
- Experimenting with new fully async rust backed virtual zarr stores - https://github.com/maxrjones/async-hdf5
- Took on GeoZarr SWG leadership, put together a website and validator to help folks get started
- Diego
- Working on Zarrifying https://source.coop/dataforcanada/d4c-datapkg-orthoimagery/archive/ca-on_province_of_ontario-2024A000235_drape_eastern_ontario_orthoimagery_2024_16cm
- Justus
- Working on rust compilation to web assembly
- Scott
- Amazing Zarr work everyone. Thanks :)
- Excited to keep trying GDAL GTI / MultiDim vs Zarr https://github.com/uw-cryo/stac-3dep-1m
- Comment from Julia - have you seen rio-stac-io?
Agenda Items:
- TBD
2026-02-04 (9am PST; 12pm EST, 1600 UTC)
Attendees: Name / Institution / @GitHub:
- Max Jones / Development Seed / @maxrjones
- Justus Magin / LOPS / @keewis
- Julia Signell / Element 84 / @jsignell
- Alex Hewett
- Ola Formo Kihle / @ofk123
Showcase Talk (15-25 min):
- Discussion
60 Second Updates:
- Max J:
- Pangeo showcase - Chuck is going to help, but would still like a higher lottery/bus factor (4)
- Julia:
- More xarray triage:
- Going to merge a PR that changes all the DeprecationWarnings to FutureWarnings - so that might be noisy.
- Pandas 3 support in xarray is coming along. The most interesting part is the dtypes
Agenda Items:
- Discussions about xarray issue, STAC vs Intake, Virtualization
2026-01-20 (1pm PST; 4pm EST; 2000 UTC)
Attendees: Name / Institution / @GitHub:
- Justus Magin / LOPS / @keewis
- Max Jones / Development Seed / @maxrjones
- Raphael Hagen / CarbonPlan / @norlandrhagen
Showcase Talk (15-25 min):
- Discussion
60 Second Updates:
- Raphael - Zarr-layer
- Max - check out https://obspec-utils.readthedocs.io/en/latest/
Agenda Items:
- TBD
2026-01-21 (9am PST; 12pm EST, 1600 UTC)
Attendees: Name / Institution / @GitHub:
- Justus Magin / LOPS / @keewis
- Julia Signell / Element 84 / @jsignell
60 Second Updates:
- Julia:
- Nothing much. Just trying to help triage xarray.
Agenda Items:
2026-01-14 (1pm PST; 4pm EST; 2000 UTC)
Attendees: Name / Institution / @GitHub:
- Max Jones / Development Seed / @maxrjones
- Justus Magin / LOPS / @keewis
- Wei Ji Leong / Development Seed
- Ola Formo Kihle / @ofk123
Showcase Talk (15-25 min):
- Discussion
60 Second Updates:
- Dggs aggregations
- Rasterix release plan
Agenda Items:
- TBD
2026-01-07 (9am PST; 12pm EST, 1600 UTC)
Attendees: Name / Institution / @GitHub:
- Justus Magin / LOPS / @keewis
- Julia Signell / Element 84 / @jsignell
- Tom Nicholas / Earthmover / @tomnicholas
60 Second Updates:
- Julia:
- Auto chunking that guarantees that on-disk chunks don’t get split up: https://github.com/pydata/xarray/pull/11060
- Justus:
- xdggs can encode / decode datasets in the zarr convention (https://github.com/zarr-conventions/dggs)
- Involved in the maintenance of h3ronpy
- Looking into using a DGGS based index (e.g. s2geometry’s S2CellTree) for regridding (similar to what s2geography / spherely do)
Agenda Items:
- TBD
See also the:
Archived Pangeo Weekly check-in notes from 2025
Archived Pangeo Weekly check-in notes from 2024
Archived Pangeo Weekly check-in notes from 2023
Archived Pangeo Weekly check-in notes from 2022
Archived Pangeo Weekly check-in notes from 2021
Archived Pangeo Weekly check-in notes from 2018-2020!
** TEMPLATE **
2026-XX-XX (1pm PT; 4pm ET; 2000 UTC)
2026-XX-XX (9am PT; 12pm ET, 1600 UTC)
Attendees: Name / Institution / @GitHub:
- Max Jones / Development Seed / @maxrjones
- Rich Signell / Open Science Computing / @rsignell
Showcase Talk (15-25 min):
- Discussion
60 Second Updates:
- Max J:
- Rich S:
Agenda Items:
- TBD