@_jhamman
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Climate scientist, engineer and human. Co-founder/CTO @earthmoverHQ. @xarray_dev/@pangeo_data dev. Formerly @carbonplanorg, @NCAR_Science, and @uw_cee. He/him.
Seattle, WA
Joined October 2014
- Tweets1.2K
- Following717
- Followers1.7K
- Likes5K
Pinned Tweet
I’ve got some exciting news to share. @rabernat and I have started @EarthmoverHQ, a new company with a mission to empower people to use scientific data to solve our planet’s most urgent challenges.
nitter.cf/EarthmoverHQ/status/15…
👋 Earthmover is a new startup whose mission is to empower people to use scientific data to solve humanity’s greatest challenges. Founders @rabernat and @_jhamman sat down with @tdechant of @techcrunch to explain why this company needs to exist.
techcrunch.com/2022/10/11/ea…
Joe Hamman retweeted
🔊 Announcing Zax: A new tensor-native data-proximate compute service from Earthmover!
Zax's query planner creates an execution plan that innately understands scientific data. Zax beta services, Zax-SQL and Zax-OpenEO, are now available to customers and free tier users. 🎉
Joe Hamman retweeted
🗣️ @TheInstituteUSM at @SouthernMiss built AQUAVIEW to turn @NOAA 's 90 million ocean profiles from a multi-day FTP workflow into an interactive conversation.
Powered by Arraylake + Icechunk + @LangChain + @GeminiApp. 🌊
Read the case study: earthmover.io/blog/aquaview-…
Joe Hamman retweeted
🚀 The Earthmover Data Marketplace is expanding!
New partners @SylveraCarbon, @SpireGlobal, Eagle Rock Analytics/Cal-Adapt, and @carbonplanorg list their data sets: From forest carbon to 46-day forecasts to wildfire risk: read up or explore for yourself!
We watched data teams waste years building the same ingestion pipelines for weather data.
So we fixed it. Zero ingestion. High velocity. Cloud-native.
Proud to launch with incredible partners like @brightbandtech, #zeusai, and dynamical.org. Give it a spin! 👇
Joe Hamman retweeted
1/3 Read the latest on the Earthmover seed round, roadmap, and current customers on TechCrunch: techcrunch.com/2025/09/22/ea…
Joe Hamman retweeted
CEO @rabernat, CTO @_jhamman & the Earthmover team are out and about at #ClimateWeekNYC - and registration is still open for Wednesday's workshop, 'Open Data in Applied Risk Analysis' and Thursday's panel, 'Bridging Earth Observation & Risk Analytics at Scale.' Join them!
Joe Hamman retweeted
#ClimateWeek NYC is coming soon: register for the events @rabernat & Earthmover will attend here: m.earthmover.io/events - including a Future of AI Weather Forecasting panel with @brightbandtech @nvidia @sorcerer_earth & @Google
Joe Hamman retweeted
Running AI weather models in the cloud? Here are 3 optimizations that radically cut cost and keep those GPUs busy earthmover.io/blog/the-3-key…
🚀 Big launch today: introducing Flux — a game-changing way to serve geospatial data via standard APIs in seconds. Built for scale, speed, and simplicity.
No more bespoke APIs. No glue code.
Just fast, interoperable access via tools you already use — QGIS, ArcGIS, web maps, Python, R, MATLAB, and more.
Flux is a cheat code for building data products.
📝 More details: earthmover.io/blog/announcin…
📅 Webinar April 22: share.hsforms.com/1FLrE9CpwS…
💬 DMs open — happy to chat or schedule a demo.
Joe Hamman retweeted
1/ 🚀 Solving #NASA ’s cloud data dilemma: Icechunk unlocks 100x faster access to archival data formats
We're thrilled to publish results from our pilot project with @NASA + @developmentseed to enable high-performance cloud-native access for NASA’s 100s of PBs of EO data.
Joe Hamman retweeted
We're moving over to BlueSky and LinkedIn for all our future announcements. Follow us at bsky.app/profile/pangeo.io to find out more about tomorrow's showcase 😉 (p.s., it's on Xpublish at Scale at 4 PM EST 🚀) Connect with us on LinkedIn at linkedin.com/company/pangeo-…
Joe Hamman retweeted
🌍 As we digitize the analog world, new data formats unlock exponential value.
@EarthmoverHQ's open-source Zarr and Icechunk are redefining how we organize and compute massive geospatial datasets, scaling solutions for problems once thought inaccessible.
🔊 Links 👇
🌎 Why do we need a cloud-native data lake for geospatial data?
In the latest episode of The Infra Pod, @tnachen & @ianlivingstone chat with the cofounders of @EarthmoverHQ, @rabernat & @_jhamman, about the future of data in climate and earth sciences.
🎧 Link in 🧵
Joe Hamman retweeted
🌎 Why do we need a cloud-native data lake for geospatial data?
In the latest episode of The Infra Pod, @tnachen & @ianlivingstone chat with the cofounders of @EarthmoverHQ, @rabernat & @_jhamman, about the future of data in climate and earth sciences.
🎧 Link in 🧵
Joe Hamman retweeted
If you’ll be at #AMS25 and love weather data, join us for a @pangeo_data Community Happy Hour! We’ll have drinks, appetizers, and great conversation with friends old and new about technology, weather & climate data, and open-source software! Register: lu.ma/ddtba5f5
Joe Hamman retweeted
We’re thrilled to announce the release of @zarr_dev-Python 3! This major release brings full support for Zarr v3 specification, including the new chunk-sharding extension, major performance enhancements, and a thoroughly modernized codebase. Read more: earthmover.io/blog/zarr3-rel…
We released Zarr-Python 3 today, complete with support for the v3 spec, new extensions (chunk-sharding) and significant performance gains.
earthmover.io/blog/zarr3-rel…
One of the best parts of this release is that it included contributions from over 30 people. After a period of slow development, the v3 refactor really managed to build momentum in the project. Special shout out to @normanrz and Davis Bennett for doing a big chunk of the work.
The 3.0.0 release clears the way for a bunch of exciting extensions built on top of the v3 spec. #icechunk, variable chunking, new dtypes, and more are all now possible. Time to get busy.