How to read this

The colors

Each field is colored by how it measured on the selected indicator (pick one of the four tabs when you open a field), for the selected year (bottom bar). Blue/green = healthier reading, red/brown = more stressed. The scale is fixed across all fields and all years, so a color means the same thing everywhere on this map.

The four indicators

Vigor (NDVI) — how dense and green the canopy is. The standard vegetation reading from satellite imagery.

Water status (NDMI) — how much water is in the canopy right now. Usually the first to react to a dry spell.

Chlorophyll (NDRE) — a more sensitive read on plant health, often moves before visible stress shows up.

Biomass (EVI) — canopy volume, less sensitive to soil color showing through than NDVI, useful for sparse or young vines.

Using the map

Click any field for its detail and 2017–2026 trend. Use the year bar at the bottom to see how the whole map changes across a decade. The 8 highlighted fields (opaque, listed on the left) are the ones used in the statistical analysis; the rest are shown for context.

The ranking bars — bar length is fixed: it's each field's average rank across all 10 years, the stable pattern behind the finding above. Bar color is dynamic: it reflects the value for whichever year and indicator you currently have selected, same scale as the map. Length tells you the decade; color tells you the moment.

Where this data comes from

Sentinel-2 satellite imagery (European Space Agency, Copernicus programme), 10 m resolution, 2017–2026. Field boundaries from SIGPAC (Spain's official agricultural parcel registry) and visual correction against recent imagery. Rainfall reference from AEMET, Spain's national weather service. Slope, shown in each field's detail, is the value declared in SIGPAC, not an independent elevation-model measurement.

Sentinel-2 · La Mola, Formentera

La Mola

56 vineyard fields · 2017–2026

Field ownership is not publicly available on Formentera. This analysis covers the vineyard fields recorded in SIGPAC on the La Mola plateau and visible in recent imagery, not a single estate's declared parcels. Some plateau vineyards not recorded in SIGPAC are not included.

Oct–Jun 2023–24 was the driest on record at La Mola 121 mm observed (AEMET, Formentera station, 8.5 km) — the driest of 86 years since 1941, not the second-driest.

8 core fields, ranked by summer vigor (avg. rank, 2017–2026)

C03 has been the most vigorous of the 8 every single year, 10 for 10. C04 has ranked in the bottom three in all 10 years (last in 6). All 8 fields sit on gentle slopes (0.7–3.3%), so terrain alone does not obviously explain the gap. Click a field, or a row above, for detail.

Other fields on La Mola (context, not in the ranking above)

click a field for detail