In recent years darkness has enveloped Syria, not only metaphorically but also literally.
The results indicate that night-time light and lit area in Syria declined by about 74% and 73%, respectively, between March 2011 and February 2014. In 12 of 14 provinces, night-time light declined by >60%. Damascus and Quneitra are the exceptions, with night-time light having declined only by about 35%. Notably, the number of internally displaced persons IDPs of each province shows a linear correlation with night-time light loss, with an R2 value of 0.52. [ . . . ] These findings lend support to the hypothesis that night-time light can be a useful source for monitoring humanitarian crises such as that unfolding in Syria.