---
title: "Aurora 1.5: Extending open foundation models for weather and Earth-system applications"
slug: "microsoft-oeffnet-aurora-15-fuer-praezisere-wetter-und-erdmodell-prognosen"
date: 2026-07-09
category: ai-provider
tags: [microsoft]
language: en
sources_count: 1
featured: false
publisher: AInauten News
url: https://news.ainauten.com/en/story/microsoft-oeffnet-aurora-15-fuer-praezisere-wetter-und-erdmodell-prognosen
---

# Aurora 1.5: Extending open foundation models for weather and Earth-system applications

**Published**: 2026-07-09 | **Category**: ai-provider | **Sources**: 1

---

## TL;DR

- Microsoft Research has introduced Aurora 1.5, an update to its open Earth-system foundation model for weather and climate applications.

---

## Summary

- Microsoft Research has introduced Aurora 1.5, an update to its open Earth-system foundation model for weather and climate applications. It adds 22 weather variables, hourly forecasting, and probabilistic ensemble forecasts.
- The model is open source on GitHub, with checkpoints on Hugging Face. Microsoft also frames Aurora 1.5 as part of Microsoft Weather, Foundry, and Planetary Computer Pro workflows.
- In Microsoft’s evaluation, Aurora 1.5 beat the ECMWF ensemble on 88.9% of tested variable-and-lead-time targets. For tropical cyclones, Microsoft reports track-error reductions of roughly one third by day 5 in some comparisons.

---

## Why it matters

Microsoft Research has introduced Aurora 1.5, an update to its open Earth-system foundation model for weather and climate applications.

---

## Key Points

- Microsoft Research has introduced Aurora 1.5, an update to its open Earth-system foundation model for weather and climate applications.
- It adds 22 weather variables, hourly forecasting, and probabilistic ensemble forecasts.
- The model is open source on GitHub, with checkpoints on Hugging Face.
- Microsoft also frames Aurora 1.5 as part of Microsoft Weather, Foundry, and Planetary Computer Pro workflows.
- In Microsoft’s evaluation, Aurora 1.5 beat the ECMWF ensemble on 88.9% of tested variable-and-lead-time targets.

---

## Nauti's Take

Strong signal, but this is not a neutral research note. Microsoft brings real substance: open weights, more variables, ensemble uncertainty, and concrete benchmarks against ECMWF. At the same time, the post clearly feeds an Azure and enterprise story. For AInauten, Aurora 1.5 is worth watching, but the key question is how well independent weather services, energy operators, and research teams can reproduce the results outside Microsoft’s own stack.

---


## FAQ

**Q:** What is Aurora 1.5 about?

**A:** - Microsoft Research has introduced Aurora 1.5, an update to its open Earth-system foundation model for weather and climate applications.

**Q:** Why does it matter?

**A:** Microsoft Research has introduced Aurora 1.5, an update to its open Earth-system foundation model for weather and climate applications.

**Q:** What are the key takeaways?

**A:** Microsoft Research has introduced Aurora 1.5, an update to its open Earth-system foundation model for weather and climate applications.. It adds 22 weather variables, hourly forecasting, and probabilistic ensemble forecasts.. The model is open source on GitHub, with checkpoints on Hugging Face.

---

## Related Topics

- [microsoft](https://news.ainauten.com/en/tag/microsoft)

---

## Sources

- [Aurora 1.5: Extending open foundation models for weather and Earth-system applications](https://www.microsoft.com/en-us/research/blog/aurora-1-5-extending-open-foundation-models-for-weather-and-earth-system-applications/) - Microsoft Research Blog

---

## About This Article

This article is a synthesis of 1 sources, curated and summarized by AInauten News. We aggregate AI news from trusted sources and provide bilingual (German/English) coverage.

**Publisher**: [AInauten](https://www.ainauten.com) | **Site**: [news.ainauten.com](https://news.ainauten.com)

---

*Last Updated: 2026-07-14*