DIAS - Data Integration and Analysis System (Japan)
Japan's national earth-science data platform (MEXT/JAMSTEC) archiving and serving large hydrological, climate and water-cycle datasets, including MLIT XRAIN radar rainfall and the Water Cycle Integrator. Provides metadata-driven discovery and download APIs used in water-resources and disaster-risk research.
diasjp.net
At a glance
- Region
- Japan (East Asia)
- Coverage
- National and Global
- Access
- Registration Required
- Category
- Research
What's inside
- Precipitation
- Streamflow
- Climate Reanalysis
- Satellite/Radar Rainfall
- Water Cycle Models
Terms explained
What you can do with it
Typical work that data of this type supports.
- 01
Design storms
Build rainfall intensity-duration-frequency curves for drainage design.
Because it has: Precipitation
- 02
Model input
Drive hydrological, crop and urban drainage models.
- 03
Design flows
Estimate 1-in-50 and 1-in-100 year floods for bridges, culverts and spillways.
Because it has: Streamflow
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Downscaling
Turn coarse rainfall grids into field or ward scale estimates.
- 02
Gauge + satellite fusion
Correct satellite rainfall with gauges using machine learning.
- 03
Flow forecasting
Train LSTM-style models on past records to forecast river levels and flow days ahead.
Related water data
- Japan Meteorological Agency AMeDAS Precipitation NetworkEast Asia | Free
- Japan Geospatial Information Authority (GSI) Flood MapsEast Asia | Free
- Japan National Institute for Environmental Studies (NIES) Water DatabaseEast Asia | Free
- KMA API Hub (Korea Meteorological Administration)East Asia | Registration Required
- WAMIS - Water Management Information System (South Korea)East Asia | Free
- A comprehensive time-series dataset linked to cyanobacterial blooms in Lake TaihuEast Asia | Free
Find more water data
Search and compare 1,900+ water data sources by region, type and access.