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---
language:
- en
---
# CoastalBench-preview
\[[**Paper**](https://openreview.net/pdf?id=h3EEUJaMLu)\] \[[**GitHub**](https://github.com/spatialdatasciencegroup/CoastalBench)\]
> This repository contains a 90-day subset of the full **CoastalBench** dataset, provided as a lightweight preview.
## Dataset Overview
- **Time span**: 2008-01-02 to 2008-04-01
- **Duration**: 90 days
- **Temporal resolution**: Half-hourly (48 time steps per day)
- **Spatial resolution**: 898 × 598
- **Vertical levels**: 12 (for 3D ocean features)
- **Data type**: `float16` (This preview uses lower precision compared to the original NetCDF files for reduced storage)
## Variables
### Ocean and Meteorological Features
Each `.zarr` file contains 48 half-hourly time steps across 82 features, stacked along the first dimension.
The 82 features include:
- **3D variables** (each with 12 vertical levels, treated as 12 separate 2D channels):
- `u`: horizontal velocity (east-west)
- `v`: horizontal velocity (north-south)
- `w`: vertical velocity
- `temp` : temperature
- `salt` : salinity
- `AKs` : vertical mixing coefficient
- **2D surface variables**:
- `zeta`: sea surface height
- `Pair`: surface air pressure
- `Qair`: specific humidity
- `Tair`: air temperature
- `rain`: rainfall rate
- `swrad`: shortwave radiation
- `lwrad`: longwave radiation
- `Uwind`: u-wind component
- `Vwind`: v-wind component
- **Land-sea mask**:
- `mask`: binary mask (1 for ocean, 0 for land), included as the 82nd feature
All features are stacked into a single 4D tensor: `(features=82, height=898, width=598, time=48)`
### River Inputs
Each river Zarr file contains 48 half-hourly time steps of 25 features across 4 river locations. These features include:
- `river_transport`: river transport (1D)
- `river_temp`: temperature at 12 depth levels
- `river_salt`: salinity at 12 depth levels
All features are stored in a 3D array with shape `(features=25, rivers=4, time=48)` and are temporally aligned with the ocean and meteorological data.
## File Structure
```
CoastalBench-preview/
├── ocean_met/
│ ├── 20080102.zarr/
│ ├── 20080103.zarr/
│ ├── ...
│ └── 20080401.zarr/
│
├── river/
│ ├── 20080102.zarr/
│ ├── 20080103.zarr/
│ ├── ...
│ └── 20080401.zarr/
```
## Citation
Please cite our paper if you find this dataset useful for your work:
```
@inproceedings{coastalbench,
title={CoastalBench: A Decade-Long High-Resolution Dataset to Emulate Complex Coastal Processes},
author={Xu, Zelin and Zhang, Yupu and Xiao, Tingsong and Lizaso, Maitane Olabarrieta and Gonzalez-Ondina, Jose M and Liu, Zibo and Chen, Shigang and Jiang, Zhe},
booktitle={Forty-second International Conference on Machine Learning},
year={2025},
}
``` |