Visitor History
Network
stations.csv
(sensors per depth + precipitation).
Live counts sensors whose timeseries currently has data — the
gap is hardware not yet streaming.
Station information
Station note / updates
Station photos
Products
L-band Radiometer (TB; Soil Moisture)
Selected flight
Data
Downloads
Calibration (per flight)
Display
Products
HLS NDVI (30 m, 2-3 day)
Selected scene
NISAR variable
Downloads
Models
AI prediction
Visits
About
A record of lab tours, partner-agency visits, and field campaigns at the Hampyeong cal/val site. Click a visit on the left to view its photo set.
Visitor stats
Visitor counts, country breakdown, referrers, and top pages are tracked via Cloudflare Web Analytics. The full dashboard opens in a new tab:
Open Cloudflare Analytics dashboard ↗Setup status
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Support the Hampyeong Cal/Val Site
The Hampyeong site is a community-funded cal/val effort run by the HydroAI lab. Every contribution goes 100% toward in-situ sensors and data loggers deployed in the field — not overhead, not travel, not salaries. Your support directly grows the network of measurements that anchor satellite missions to ground truth.
Our vision
We are building the world's reference site for validating future satellite missions — at the highest spatial resolution and the highest measurement quality ever assembled for soil-moisture cal/val. From microwave radiometry and SAR backscatter to optical and thermal retrievals, every product that flies overhead deserves measurements rich and precise enough to trust against. Hampyeong is where we make that trust quantifiable.
Roadmap: 1 km → 9 km → 36 km
We instrument in stages, each anchored to the EASE-Grid 2.0 cells used by NASA SMAP and partner missions:
- Stage 1 — 1 km cell (current): 50 stations, UAV LiDAR / multispectral / TIR / L-band radiometer, NISAR-class SAR.
- Stage 2 — 9 km cell: extend the in-situ network ninefold to match SMAP's native footprint.
- Stage 3 — 36 km cell: scale to the full SMAP composite scale, becoming a turnkey reference for any current or future soil-moisture / land-surface mission.
Each stage is sensor-bound — every donation buys real hardware that stays in the field.
What you get back
- Quarterly progress reports: deployments, retrievals, new datasets, and how your donation was used.
- Acknowledgement in research outputs: any peer-reviewed paper, conference presentation, or dataset release that uses Hampyeong data will credit donors who consent.
- Early access to Hampyeong-derived products as they come online.
How to contribute
To donate or to discuss in-kind contributions (sensors, loggers, field time), please reach out directly:
— Hyunglok Kim, PI, HydroAI lab