Axine Labs
Free / commercial imagery

Proxy de Carbono Orgânico do Solo

Um índice relativo de matéria orgânica sobre composições de solo exposto, feito para dizer onde amostrar.

Cada pixel é composto para o momento em que esteve mais exposto e então classificado por matéria orgânica. Nenhum teor de carbono é reportado.

Proxy de Carbono Orgânico do Solo
In view

Cropland at scale. The proxy tracks the darkening that follows organic matter.

O QUE ELA ENCONTRA

O que ela detecta.

MaterialContexto típicoO que pode confundi-la
Topsoil organic matter, relative indexCropland, grassland and rangeland topsoil, the top few centimetres onlySurface moisture darkens soil the same way organic matter does; roughness and shadow do too

MÉTODO

Como funciona.

Entra reflectância calibrada, e cada pixel é ajustado contra uma biblioteca pública de referência.

01Step 1

Bare-soil compositing

A multi-year series is filtered down to the moments when each pixel was most exposed, and those moments are composited. Cloud-free compositing over a date range is a shipping capability.

02Step 2

Moisture and roughness caution

Wet soil is darker than dry soil of the same composition, and rough soil is darker than smooth. Both effects sit on top of the one being measured, and neither is fully removed by the soil line correction applied here.

03Step 3

Regression onto laboratory libraries (not built)

Turning reflectance into a carbon figure means fitting against a laboratory soil library and validating that fit region by region. That work is on the roadmap, and until it lands the output stays a relative index.

04Step 4

Relative index output

What ships is a ranking within a field or a run of fields on the same composite, useful for deciding where to sample.

ESPECIFICAÇÕES

O que você recebe, e sobre o que ela roda.

Valores entreguesRelative index, floating point, unitless
SaídaBare-soil composite with a relative organic matter index
Prazo de entregaCompositing runs across the archive record; the window drives the wait, not the model
Formatos
Cloud-Optimized GeoTIFF (COG)Vector Parcel Averages (GeoJSON)Provenance record (composite window, scenes used, method version)

Condições de que precisa

Sun angle limit:55°
Cloud cover limit:10%
Vegetation cover limit:25%

Method and checks are documented in Axine Applied Spectroscopy Paper #5 · Section 4.2.

Ler o artigo

Escopo

A relative ranking that tells you where to sample. No carbon content is reported.