Create README.md
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README.md
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---
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license: mit
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size_categories:
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- n>1T
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tags:
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- Helio
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- Foundation_model
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- Pretraining
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---
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# 🌞 SDO ML-Ready Dataset: AIA and HMI Level-1.5
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## Overview
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This dataset provides machine learning (ML)-ready solar data curated from NASA’s Solar Dynamics Observatory (SDO), covering observations from **May 13, 2010, to July 31, 2024**. It includes Level-1.5 processed data from:
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- **Atmospheric Imaging Assembly (AIA)**:
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- **Helioseismic and Magnetic Imager (HMI)**:
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The dataset is designed to facilitate large-scale ML applications in heliophysics, such as solar activity forecasting, unsupervised representation learning, and scientific foundation model development.
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---
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## 📦 Dataset Details
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| Field | Description |
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|------------------------|---------------------------------------------|
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| **Temporal Coverage** | May 13, 2010 – Dec 31, 2024 |
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| **Data Format** | netCDF (`.nc`), float32 |
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| **Temporal Granularity**| 12 minutes |
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| **Data Shape** | `[13, 4096, 4096]` per file |
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| **Channels** | 13 total (AIA EUV ×8 + HMI magnetograms ×5) |
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| **Size per File** | ~570 MB |
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| **Total Size** | ~360TB |
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---
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**Data Variables:**
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```text
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- aia94 (y, x) float32 : AIA 94 Å
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- aia131 (y, x) float32 : AIA 131 Å
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- aia171 (y, x) float32 : AIA 171 Å
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- aia193 (y, x) float32 : AIA 193 Å
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- aia211 (y, x) float32 : AIA 211 Å
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- aia304 (y, x) float32 : AIA 304 Å
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- aia335 (y, x) float32 : AIA 335 Å
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- aia1600 (y, x) float32 : AIA 1600 Å (UV continuum)
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- hmi_m (y, x) float32 : HMI LOS Magnetogram
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- hmi_bx (y, x) float32 : HMI Magnetic Field - x component
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- hmi_by (y, x) float32 : HMI Magnetic Field - y component
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- hmi_bz (y, x) float32 : HMI Magnetic Field - z component
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- hmi_v (y, x) float32 : HMI Doppler Velocity
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---
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Training Data for 1 month is available on Huggingface parallel to the main branch as Parquet files.
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Authors
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Sujit Roy, Dinesha Vasanta Hegde, Johannes Schmude, Amy Lin, Vishal Gaur, Talwinder Singh, Rohit Lal
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corr: sujit.roy@nasa.gov
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