AIFS ENS and validation reports
I was tempted, but alas Gefs (short for Gefsfry) did not make the cut for the name of my newborn son. He's here and everyone is healthy - so I'm getting back to it. Some catch-up:
ECMWF AIFS ENS forecast
The ensemble sibling to AIFS Single is now in the catalog. ECMWF AIFS ENS: 15-day global forecasts at 0.25°, 6-hourly steps, 51 members, updating every 6 hours. Archive starts 2025-07-02.
Validation reports
Did you know Alden has knuckle tats? They spell
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To live up to the knuckles, we are adding in-depth validation reports to each catalog entry. For each variable, you get three views: a null-fraction trace over time (so you can see any gaps in the archive at a glance), side-by-side spatial maps comparing our dataset against analysis at a sample timestamp, and time-series comparisons at two random geographic points. The spatial plots also include a value-distribution histogram so you can see at a glance whether the numbers look right.
Find it linked from each catalog page, or go directly — e.g. ECMWF AIFS ENS forecast validation.
We are in the process of backfilling these for existing data products and we would LOVE your feedback!
These are one layer of a broader validation process that runs automatically as each dataset updates. The goal is to give us (and you) enough visibility into the data that you can trust it before you build on it.
On the AWS blog
If you've ever wondered why we started with the data products that make up our catalog, check out my blog post on the AWS Public Sector Blog: What if swapping your weather model was boring?
AWS Open Data has been an incredible partner as we've gotten dynamical.org up and running!
Enjoy the weather,
MM