Consider the following statements : The Satellite Oceansat-2 launched by India helps in 1. estimating the water vapour content in the atmosphere. 2. predicting the onset of monsoons. 3. monitoring the pollution of coastal waters. Which of the statements given above is/are correct ?

Oceansat‑2 carries three primary sensors — a Radio Occultation Sounder for Atmosphere (ROSA), a Ku‑band scatterometer and an Ocean Colour Monitor (OCM). ROSA provides vertical characterization of the lower atmosphere and can be used to infer moisture/water‑vapour profiles, enabling estimation of atmospheric water vapour [1]. The scatterometer and derived wind/sea‑state products are cited as supporting monsoon and cyclone forecasting, including onset and progression over the Indian region [2]. The OCM supplies ocean‑colour measurements (chlorophyll, suspended sediments, phytoplankton) used to assess coastal water quality and monitor pollution and blooms [3]. Therefore statements 1, 2 and 3 are all correct.

Sources

1. [1] https://www.unoosa.org/pdf/pres/stsc2010/tech-47.pdf
2. [2] https://www.eoportal.org/satellite-missions/oceansat-2
3. [3] https://ioccg.org/wp-content/uploads/2016/02/ocm-ocean-colour-atlas-2018.pdf