Axine Labs
Free / commercial imagery

Anomalía Térmica de Descarga de Agua

Contraste térmico relativo en descargas de agua de enfriamiento y vertidos industriales, tomado contra el agua ambiente circundante.

Contraste de temperatura de brillo en puntos de descarga, contra una línea base local tomada del agua circundante.

Anomalía Térmica de Descarga de Agua
In view

Coastal discharge waters, where thermal contrast is mapped against ambient.

QUÉ ENCUENTRA

Qué detecta.

MaterialEntorno típicoQué puede confundirlo
Thermal discharge plumes (relative contrast)Power plant cooling outfalls, industrial discharge, and hot springsAtmospheric water vapour, surface roughness, and any cloud at all

MÉTODO

Cómo funciona.

Entra reflectancia calibrada, y cada píxel se ajusta contra una biblioteca pública de referencia.

01Step 1

Brightness temperature ingest

The thermal band is read at the archive's own brightness temperature level. No emissivity model is applied, so what comes out is not a kinetic temperature and is not presented as one.

02Step 2

Ambient baseline

A local background is computed from water pixels around the outfall, so the plume is expressed against its own river or bay rather than against a global value.

03Step 3

Contrast mapping

The difference field is mapped and contoured. Pixels where cloud, glint or land adjacency make the reading unusable go into the not-evaluated class.

04Step 4

Extent, not dispersion modelling

The plume outline and its area are reported. No mixing model, decay curve or discharge rate is fitted, because none has been validated.

ESPECIFICACIONES

Qué obtiene, y sobre qué corre.

Valores entregadosBrightness temperature difference, floating point
SalidaRelative thermal contrast raster
Plazo de entregaQuoted with the order once the thermal loader lands
Formatos
Cloud-Optimized GeoTIFF (COG)Vector Plume Contours (GeoJSON)Provenance record (granule id, method version)

Condiciones que necesita

Sun angle limit:90°
Cloud cover limit:0%
Vegetation cover limit:0%

Method and checks are documented in Axine Applied Spectroscopy Paper #3 · Section 6.2.

Leer el artículo

Alcance

Relative contrast at the water surface, never an absolute temperature. Cloud-free passes are required.