We generated a 30m resolution global urban boundary dataset in seven representative years (i.e., 1990, 1995, 2000, 2005, 2010, 2015, and 2018).
Spatial Resolution: 30m;
Temporal Resolution: Every 5 years;
Temporal Coverage: 1990-2015, 2018
Mapping global urban boundaries from the global artificial impervious area (GAIA) data