DOI: 10.16904/envidat.670
title: SDGSAT-1 Night-Time Lights Mosaic for Switzerland

description: This dataset provides a Swiss-wide mosaic of night-time lights, derived from SDGSAT-1 GLI satellite imagery. The mosaic contains median radiance values based on observations from winter 2023/24. Poor-quality images (due to factors such as clouds, inconsistent geometric accuracy or excessive noise) have been manually excluded.
The potential of SDGSAT-1 night-time lights data for ecological applications is discussed in Weber et al. ([2025](https://doi.org/10.1002/rse2.70011)).
**Two mosaic types are available**
-PAN Radiance (10 m resolution) with three bands: Panchromatic Low (PL), Panchromatic High (PH), and High Dynamic Range (HDR)
-RGB Radiance (40 m resolution) with three bands: Red, Green, and Blue
**Additional layers for PAN/RGB include**
-Number of observations per pixel (OBS)
-Standard deviation of radiance values per pixel (SD)
**Additional information**
-Radiance values were calculate based on the calibration values (gain, bias) V3.0 
-Radiance values were converted to nW/cm^2/sr
-Of the three panchromatic bands, HDR is recommended for use as it is the weighted average of 50% of the PL and PH data.
-Access and more information about SDGSAT-1 data: [sdgsat.ac.cn](https://www.sdgsat.ac.cn)
**Attribution**
This dataset is based on SDGSAT-1 imagery provided by the International Research Center of Big Data for Sustainable Development Goals (CBAS). It is acknowledged that the SDGSAT-1 data are kindly provided by CBAS for non-commercial use.
For questions or collaboration, contact: dominique.weber@wsl.ch
description: Resource Title: SDGSAT-1 PAN Radiance
 Size: 260859708 bytes
 Format: image/tiff
 URL: https://www.envidat.ch/dataset/2782cc68-abae-40ef-82be-91c9167292cb/resource/9c85891b-eac8-46b3-91d9-c0abf10ac640/download/sdgsat1_gli_2023-2024_pan_median_radiance.tif
 Description: Swiss-wide panchromatic night-time lights mosaic showing median radiance values from SDGSAT-1 GLI observations in winter 2023/2024.

- GeoTIFF, 10 m resolution, EPSG:2056
- Band 1: PL, Band 2: PH, Band 3: HDR
description: Resource Title: SDGSAT-1 PAN OBS
 Size: 33168454 bytes
 Format: image/tiff
 URL: https://www.envidat.ch/dataset/2782cc68-abae-40ef-82be-91c9167292cb/resource/8849653f-4efb-4f50-bb15-05542f229615/download/sdgsat1_gli_2023-2024_pan_nbr_obs.tif
 Description: Number of observations (OBS) which were used to generate the panchromatic mosaic.

- GeoTIFF, 10 m resolution, EPSG:2056
- OBS with identical values for each band
description: Resource Title: SDGSAT-1 PAN SD
 Size: 728641887 bytes
 Format: image/tiff
 URL: https://www.envidat.ch/dataset/2782cc68-abae-40ef-82be-91c9167292cb/resource/72b94910-5a08-4d43-8023-8c8ddcaf8168/download/sdgsat1_gli_2023-2024_pan_sd.tif
 Description: Standard deviation (SD) of all radiance values which were used to generate the panchromatic mosaic.

- GeoTIFF, 10 m resolution, EPSG:2056
- Band 1: SD for PL, Band 2: SD for PH, Band 3: SD for HDR
description: Resource Title: SDGSAT-1 RGB Radiance
 Size: 26283647 bytes
 Format: image/tiff
 URL: https://www.envidat.ch/dataset/2782cc68-abae-40ef-82be-91c9167292cb/resource/b93e8d1e-8f29-40b9-a120-e363f9617bb7/download/sdgsat1_gli_2023-2024_rgb_median_radiance.tif
 Description: Swiss-wide RGB night-time lights mosaic showing median radiance values from SDGSAT-1 GLI observations in winter 2023/2024.

- GeoTIFF, 40 m resolution, EPSG:2056
- Band 1: RED, Band 2: GREEN, Band 3: BLUE
description: Resource Title: SDGSAT-1 RGB OBS
 Size: 3384417 bytes
 Format: image/tiff
 URL: https://www.envidat.ch/dataset/2782cc68-abae-40ef-82be-91c9167292cb/resource/96befb49-9ab3-419f-abc9-694ecd0c1257/download/sdgsat1_gli_2023-2024_rgb_nbr_obs.tif
 Description: Number of observations (OBS) which were used to generate the RGB mosaic.

- GeoTIFF, 40 m resolution, EPSG:2056
- OBS with identical values for each band
description: Resource Title: SDGSAT-1 RGB SD
 Size: 49250595 bytes
 Format: image/tiff
 URL: https://www.envidat.ch/dataset/2782cc68-abae-40ef-82be-91c9167292cb/resource/ba3f98b9-2a9d-49b4-aa44-17549fa73d5d/download/sdgsat1_gli_2023-2024_rgb_sd.tif
 Description: Standard deviation (SD) of all radiance values which were used to generate the RGB mosaic.

- GeoTIFF, 40 m resolution, EPSG:2056
- Band 1: SD of RED, Band 2: SD of GREEN, Band 3: SD of BLUE