New Delhi, Jan. 16 -- The India Meteorological Department will launch the second phase of its modernisation and upgradation exercise, Mission Mausam by April , M Ravichandran, secretary, ministry of earth sciences said on Thursday, while speaking on the occasion of 151st Foundation Day of the weather office. This will involve a massive upgradation of observational systems over the land and the ocean, he said. One of the most significant aspects would be the installation of 200 automatic weather stations in important cities including Delhi NCR, Mumbai and Chennai. There are around 1000 AWS in India. The upgradation will begin with the installation of 20 AWS in Delhi this month. AMission Mausam Phase 2 will also address gaps in ocean observat...