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Comparison of DMSP/OLS and NPP/VIIRS annual data characteristics.
| Source | DMSP/OLS | NPP/VIIRS |
|---|---|---|
| Spatial resolution | 1000 m | 500 m |
| Onboard calibration | No | Yes |
| Units of pixel values | Relative | Radiance (nanoWatts/(cm2 sr)) |
| Available temporal sequence | 1992–2013 annual composites | 2012–present monthly composites |
| Range of pixel values | 0–63 | 0–472.68 1 |
1 This range of values is our processed range; the actual range of values is larger than this.
