---
license: cc-by-4.0
language:
  - en
tags:
  - hydrology
  - rainfall
  - sediment
  - taiwan
  - zarr
  - netcdf
  - stac
pretty_name: MOSES Initiative — Matai'an Open Science Dataset
---

> **Note:** This description was drafted with AI assistance and is subject to revision.

# MOSES Initiative — Matai'an Open Science and Engineering Sharing Platform

The **MOSES Initiative** (Mataian Open Science and Engineering Sharing Initiative) publishes scientific and engineering datasets for the **Matai'an Creek (馬太鞍溪)** watershed in eastern Taiwan (23.56°N–24.15°N, 121.16°E–121.68°E). All datasets are discoverable through a [STAC catalog](https://huggingface.co/datasets/NTU-CompHydroMet-Lab/mataian-moses-stac/resolve/main/stac_catalog/catalog.json).

---

## Datasets

### 1. Radar Rainfall — Typhoon Events (`stac_catalog/assets/radar-rain-monthly`)

Machine-learning-predicted gridded rainfall for the Matai'an area, organized by typhoon event (2012–2026).

- **Format**: Monthly NetCDF (`.nc`) and Zarr (`.zarr`)
- **Variables**: 1-hr accumulated rainfall, 10-min intensity, AOI mask, elevation
- **Spatial**: 48 × 42 grid points, ~1.2 km resolution
- **Temporal**: 10-minute intervals per month
- **Model**: XGBoost, trained on CWA radar data
- **License**: Proprietary (contact lab for access)

See [`rain/zarr_tutorial.md`](https://huggingface.co/datasets/NTU-CompHydroMet-Lab/mataian-moses-stac/blob/main/stac_catalog/assets/radar-rain-monthly/zarr_tutorial.md) for a Python example using `xarray` + STAC to access Zarr data without downloading entire files.

### 2. Downstream Sediment (`stac_catalog/assets/sediment`)

Bed material particle-size distribution and physical properties sampled along Matai'an Creek.

- **Samples**: 22 sites (Dec 2025 – Jan 2026)
- **Methods**: Sieve analysis + hydrometer sedimentation test
- **Measurements**: Grain size distribution (Gravel → Clay), D10/D30/D50/D60, Cu, Cc, specific gravity
- **Reference**: [MOSES Report No. 001](https://huggingface.co/datasets/NTU-CompHydroMet-Lab/mataian-moses-stac/blob/main/stac_catalog/assets/sediment/MOSES_Initiative_001.pdf) — *Dataset of Bed Material Particle-Size Distribution and Physical Properties in Matai'an Creek*
- **License**: [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/)

See [`sediment_README.md`](https://huggingface.co/datasets/NTU-CompHydroMet-Lab/mataian-moses-stac/blob/main/stac_catalog/assets/sediment/sediment_README.md) for the full data dictionary.

---

## STAC Catalog

All datasets are indexed in a [SpatioTemporal Asset Catalog (STAC)](https://stacspec.org/). Browse with [STAC Browser](https://radiantearth.github.io/stac-browser/#/external/huggingface.co/datasets/NTU-CompHydroMet-Lab/mataian-moses-stac/resolve/main/stac_catalog/catalog.json) or load programmatically:

```python
import pystac
catalog = pystac.Catalog.from_file(
    "https://huggingface.co/datasets/NTU-CompHydroMet-Lab/mataian-moses-stac"
    "/resolve/main/stac_catalog/catalog.json"
)
```

---

## Citation

If you use these datasets, please cite:

> MOSES Initiative. (2026). *Mataian Open Science and Engineering Sharing Platform* [Dataset]. National Taiwan University. https://huggingface.co/datasets/NTU-CompHydroMet-Lab/mataian-moses-stac

---

## Contact

**CompHydroMet Lab & MHRG Lab**  
Department of Civil Engineering, National Taiwan University