Officials of the Meteorological Department said a combination of factors led to such dense fog that blanketed most parts of the city.
Chennaiites woke up to dense fog that descended over the city on Friday morning with visibility falling below 50 metre in several places, particularly around Meenambakkam, according to the Meteorological Department.
The visibility improved in many areas only after 8.30 a.m. Officials of the Meteorological Department said a combination of factors led to such dense fog that blanketed most parts of the city.
B.Amudha, Scientist-E and in-charge, Aviation Meteorological Office, Meenambakkam, said the visibility dropped below 50 metre between 5.30 a.m. and 8.30 a.m. over the Chennai Airport. It improved to 2,000 metre around 9 a.m.
Clear skies and calm winds that prevailed on Thursday night led to formation of dense fog. “The outgoing radiation emitted by earth escapes faster because of clear skies. The earth’s surface also cools off and the…