New Delhi, Nov. 5 -- Satellite maps showing a plume of smoke filled with PM10 and PM2.5 particulate matter travelling from northwest India past the Indo-Gangetic plains into the Bay of Bengal, and then moving southwards towards Chennai, grabbed the attention of researchers and scientists on Monday.

Some experts said the deadly smog in Delhi on Sunday may be linked to the moving smoke clouds, while experts at India Meteorological Department contended the particulate matter near Chennai may be from a different source altogether.

Irrespective of whether it is the same source or not, they agreed that local pollution can accumulate and travel great distances depending on meteorological conditions, in this case to the Bay of Bengal and beyond....