Polar Satellite Launch Vehicle - C18 (PSLV-C18) -- blasted off from Sriharikota spaceport, around 80km from Chennai.
It is lugging a 1,000-kg Megha Tropiques and three smaller satellites together weighing 42.6 kg.
Megha Tropiques is an Indo-French collaboration to study climatic and atmospheric changes in tropical regions and makes India the second nation in the world to launch such a space mission.
The satellite will look down at the earth from around 800 km low earth orbit and is expected to enable the India Meteorological Department (IMD) to forecast weather in a more precise manner.
The three nano satellites that will be ferried by the PSLV are the 10.9-kg SRMSAT built by the students of SRM University near Chennai, the three-kg remote sensing satellite Jugnu from the Indian Institute of Technology-Kanpur and the 28.7-kg VesselSat from Luxembourg to locate ships on high seas.
