# DESIS Level-2A Surface Reflectance
*data products*

## Specifications
- **level**: L2
- **distributor**: dlr
- **spectral range nm**: {"min":402,"max":1000}
- **spectral band count**: 235
- **gsd m**: {"native":30}
- **file format**: GeoTIFF
- **access endpoint**: https://download.geoservice.dlr.de
- **access model**: restricted
- **licence**: DLR DESIS data licence (free for scientific use, registration required)
- **primary data portal url**: https://geoservice.dlr.de/web/maps/eoc:desis
- **use cases**: ["VNIR hyperspectral surface reflectance for vegetation and iron-oxide mineral indices","Fixed archive (November 2018 to December 2023) for cross-sensor calibration validation","Per-pixel ferric iron and chlorophyll mapping","Land cover and broad lithological context within 52 S to 55 N latitude band"]
- **practical limitations**: ["VNIR-only coverage (402 to 1000 nm); excludes the SWIR band (1300 to 2500 nm) where the diagnostic absorption features of clay, carbonate, sulphate, and phyllosilicate alteration minerals sit","Archive is closed; the instrument was retired on 31 December 2023 and no new acquisitions will be added","ISS-orbit non-sun-synchronous acquisition; illumination geometry varies across scenes and must be normalised","Coverage limited to approximately 52 S to 55 N due to ISS inclination of 51.6 degrees","Access restricted to scientific use following DLR registration; not freely redistributable"]
- **known artefacts**: ["L2A surface reflectance products from before commissioning closeout (October 2018) may carry interim calibration coefficients; re-processed coefficients applied to nominal-ops archive from late 2018 onward"]
- **last verified date**: "2026-05-19T00:00:00.000Z"
- **verified by**: agency-doc
- **claim status**: agency-verified
- **deployment context**: orbital

## Compositional position
- minerals (topics) --[topic_capabilities]--> DESIS Level-2A Surface Reflectance

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Source: https://eo-atlas.org/data_products/desis-l2a-sr
Maintainer: SpectraWorks B.V. (CC-BY 4.0)