It is possible to visualize the spectra that make up BSSL so that you can compare with your spectral data or understand how the spectral behavior of the soil varies according to each soil and its characteristics. There is data available in the spectral range in Vis-NIR-SWIR (350 to 2500 nm) of all samples. For some samples, spectral curves are also available in the Mid-IR range (from 2500 to 25000 nm or 4000 to 600 cm^-1).

How to use the BraSpecS library:

1. Choose the federative unit and the options of the spectrum range of interest VIS-NIR-SWIR or Mid-IR;
2. Define the filters by soil class wrb, sibcs, order, suborder, group, subgroup and texture;
3. Click on Filter to access the medium spectra per layer;

Spectral Range	Wave Length
Vis-NIR-SWIR	350 - 2500 nm
Mid-IR	4000 - 600 cm-1

The spectra are presented by layer A (0-20 cm), B (40-60 cm), C (80-100cm) and D (+120cm). This procedure was performed to standardize the operating system.

Layer	Depth
A	0 - 20 cm
B	40 - 60 cm
C	80 - 100 cm
D	+120 cm
All Depths	Average of samples from all layers of the database

Texture	% clay
Very sandy	0 – 10
Sandy	10 - 15
Sandy loam	15 - 25
Clayey loam	25 - 35
Clay	35 - 60
Very clayey	> 60