The field's openly accessible databases of radiative and optical property
data, each maintained by an institution on the
research map. Counts are exact and
dated; every dataset is traceable to its source publication.
EKHI
Thermomat / EHU · Bilbao
Open, publication-centred database of optical and thermal radiative
properties of solid materials: curve-level spectral datasets with
explicit provenance, machine-readable downloads, and citation tools.
Described in
Scientific Data (2026).
See the latest entries directly in the
live database.
Emissivity spectra of planetary-analog materials (minerals, regolith
simulants) measured in vacuum, including heated samples for Mercury
and Venus surface conditions. Supports the MERTIS instrument on
BepiColombo.
Laboratory reflectance and emissivity spectra of natural and man-made
materials (formerly the ASTER Spectral Library), widely used for
land-surface temperature and emissivity retrieval.
Reference reflectance spectra of minerals, rocks, soils, vegetation,
and man-made materials, used across remote sensing and as input for
emissivity modelling.
Visible and solar reflectance and absorptance, thermal emissivity and
CIE L*a*b* colour of 236 commercial façade, roof and pavement
materials, measured between January 2023 and July 2026 in the
mateMad, PAULIA and ZEBAI projects. Each product is classified by
composition, application and format. Version 2 (2026), spreadsheet
download, CC BY-NC-SA 4.0.
Thermo-optical properties database capitalizing ONERA's measurements
of the optical properties of materials, coatings, and paints for
infrared signature studies. Not openly downloadable: access is granted
on request, subject to ONERA/DGA approval.