Fig. 1. (a) The Terra satellite's Moderate Resolution Imaging Spectroradiometer (MODIS) image from 30 October 2013, showing transport of plumes from crop residue burning in Punjab (yellow circle shows crop residue burning areas) toward the east of the Indo-­Gangetic plain (IGP) and also toward border areas of Pakistan. (b) MODIS image from 1 November 2013, showing the same plume form intense smog and fog over the IGP.
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