File size: 2,988 Bytes
4a435e1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 | # FuXi-CFD Dataset
## Overview
This dataset accompanies the paper:
**Reconstructing fine-scale 3D wind fields with terrain-informed machine learning**
It contains large-scale CFD-generated wind field simulations used for training and evaluating the FuXi-CFD model described in the paper.
The dataset includes over **12,000 cases**.
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## Dataset Organization
The dataset is distributed as compressed archive files:
FuXi-CFD-dataset-part01.tar
FuXi-CFD-dataset-part02.tar
...
FuXi-CFD-dataset-part13.tar
Each case follows the structure:
case_000001/
inputs.npz
outputs.npz
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## Inputs (inputs.npz)
The `inputs.npz` file contains four variables:
### dem
- Shape: (300, 300)
- Unit: meters (m)
- Horizontal resolution: 30 m
Digital Elevation Model (DEM) representing terrain elevation.
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### roughness
- Shape: (300, 300)
- Unit: meters (m)
- Horizontal resolution: 30 m
Surface roughness length (z₀) map representing aerodynamic terrain roughness.
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### u_100m
- Shape: (9, 9)
- Unit: m s⁻¹
- Horizontal resolution: approximately 1 km
Coarse-resolution zonal wind component at 100 m height.
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### v_100m
- Shape: (9, 9)
- Unit: m s⁻¹
- Horizontal resolution: approximately 1 km
Coarse-resolution meridional wind component at 100 m height.
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## Outputs (outputs.npz)
The `outputs.npz` file contains four high-resolution 3D variables.
All output variables have shape:
(27, 300, 300)
where:
- 27 corresponds to the number of vertical levels (in meters above ground level).
- 300 × 300 corresponds to 30 m horizontal resolution
The 27 vertical levels are:
5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100,
106.5, 114.95, 125.94, 140.22, 158.78, 182.91, 214.29
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### u
- Unit: m s⁻¹
Zonal wind component (east–west).
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### v
- Unit: m s⁻¹
Meridional wind component (north–south).
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### w
- Unit: m s⁻¹
Vertical wind component.
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### k
- Unit: m² s⁻²
Turbulent kinetic energy (TKE).
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## Resolution Summary
| Variable | Horizontal Resolution | Vertical Levels |
| -------------- | --------------------- | --------------- |
| dem | 30 m | — |
| roughness | 30 m | — |
| u_100m, v_100m | 1 km | single level |
| u, v, w, k | 30 m | 27 levels |
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## Data Split
The dataset is provided as a single collection without predefined splits.
The official train/validation/test split used in the paper can be found in the associated publication.
Users are free to define custom splits for their own applications.
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## License
CC BY-NC 4.0
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## Citation
If you use this dataset, please cite:
Lin, C., et al. *Reconstructing fine-scale 3D wind fields with terrain-informed machine learning*, Nature Communications (2026).
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