Zhou, Y., X. Li, G. R. Asrar, S. J. Smith & M. Imhoff , 2018. A global record of annual urban dynamics (1992–2013) from nighttime lights. Remote Sensing of Environment, 219, 206-220.
Zhou, Y., SJ Smith, CD Elvidge, K Zhao, A Thomson, M Imhoff, 2014. A Cluster-based Method to Map Urban Area from DMSP/OLS Nightlights. Remote Sensing of Environment. 147, 173-185
Zhou, Y., et al., A global map of urban extent from nightlights. Environmental Research Letters, 2015. 10(5): p. 054011.
We developed a new approach to develop spatially and temporally consistent global urban maps from 1992 to 2013, using the DMSP/OLS NTL observations. First, potential urban clusters were delineated using the NTL data and a segmentation method. Then, a quantile-based approach was used to remove rural and suburban areas sequentially in the potential urban clusters. Finally, the derived urban series of the entire study period (1992-2013) were improved for temporal consistency.
Spatial Resolution: 1km;
Temporal resolution: Annual;
Temporal Coverage: 1992-2013
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