SiAR (Spanish Ministry of Agriculture)
More than 500 agro-climate stations with an official REST API and reference evapotranspiration computed with Penman-Monteith: public weather data that almost nobody uses.
>500 stations · official REST API
Satellite-guided irrigation
When do you irrigate each sector, and how much? We build the engine that joins the official SiAR reference evapotranspiration with what Sentinel-2 sees in your crop, and returns the dose in liters per hectare.
SiAR (>500 stations, Penman-Monteith ETo) + Sentinel-2 at 10 m every 5 days
The data that makes it possible
Three public sources, operational and with clear licenses.
Sentinel-2
Vegetation indices at 10 m with a 5-day revisit: the crop coefficient stops being a table and becomes what the satellite sees in your field.
10 m · 5-day revisit
ECMWF Open Data and AIFS
Open forecasts under CC BY 4.0 with commercial use, 4 cycles per day and up to 15 days ahead to plan irrigation, including a 51-member probabilistic ensemble.
4 cycles/day · CC BY 4.0
Irrigation, in numbers
Drip is already the leading irrigation technique in Spain, and still a third of the water is distributed by gravity. At these volumes, tuning the dose per sector is the decision that moves the most water each week.
What we build for you
An irrigation advice service for your irrigation district, co-op, or farm: a water balance per sector with SiAR ETo and a Sentinel-2 crop coefficient; a 15-day outlook to plan turns; alerts when the crop moves away from what is expected; and delivery where you already work (your app, your irrigation SCADA, or your decision support system) through an API or MCP.
A crop coefficient the satellite reads
The crop coefficient (Kc) is the factor that says how much water your crop uses compared to a reference. Instead of taking it from a fixed table, we derive it from NDVI, the index that measures how much green leaf each field shows to Sentinel-2. Every pass updates the real Kc for each sector, so the dose matches today's crop, not a manual.
Sentinel-2 · NDVI to Kc · 5-day revisit
A water balance per sector, in liters per hectare
We cross that Kc with SiAR ETo (reference evapotranspiration, the water the air pulls from a standard crop) to get the real use of each sector. We subtract effective rain and what you already applied, and a water balance updates on its own. What it returns is concrete: how many liters per hectare to replace, and in which turn.
SiAR · Penman-Monteith ETo · balance per sector
A 15-day outlook with a drift alert
With the open ECMWF forecast we project water need for the next fifteen days, so you can order turns before the heat sets in. And when the crop moves away from the expected curve, a sector greening less than planned, an alert fires so you check that field before the problem grows.
ECMWF · up to 15 days · 4 cycles/day
Who it is for
Agrifood
Farms, co-ops, and irrigation districts that decide doses and turns every week.
Environment and water
Water managers who need consumption and demand under control.
We have done this before: TELENITRO (real-time nitrogen management for Mediterranean horticulture, guided by satellite and sensors, within the PRIMA program) was designed and built by the team that today forms T3 AISAT.
Put data behind your next irrigation
Tell us what you grow, how you irrigate, and what network you have. We will propose the advice engine that fits your turns.
Talk to the team