How an IIT-Madras professor has helped Isro, Nasa fine-tune Nisar's operational settings
Prof Manikandan Mathur of the Geophysical Flows Lab, Centre of Excellence, Department of Aerospace Engineering, IIT-Madras, helped
and
fine-tune the satellite's operational settings by advising on when, how often, and which coastal regions should be imaged.
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He highlighted the need for high-resolution observations of the north Indian Ocean to improve understanding of coastal processes and their role in weather modelling and pollutant transport.
Prof Mathur and his team plan to use Nisar data to study how river water mixes with the ocean in the Bay of Bengal, internal gravity waves in the coastal Indian Ocean, and how these processes influence regional weather and high-impact events like intense rainfall and flooding in the Indian subcontinent.
Unlike earlier Earth observation satellites, which have either been poor in imaging coastal regions or perform poorly in cloudy weather, Nisar will provide images at resolutions of a few tens of metres and revisit the same location every 12 days.
'Nisar will overcome both these drawbacks, in addition to its imaging of very fine scale features on the Earth's surface that we have never seen before,' he said.
'This is a unique collaboration between Isro and Nasa, combining the best of the capabilities of two different frequency bands,' he added.
Prof Mathur added that the open access to Nisar data would be game-changing for the Indian scientific community, especially young researchers. 'The general awareness amongst the Indian scientific community about what is possible using satellite imaging is going to increase significantly,' he said.
It would also open up a very exciting, societally relevant area of application for the machine learning and data science community, he added.
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