Space based observation on changing colours of Lonar Lake
The world's third-largest crater, Lonar Lake in Maharashtra’s Buldhana district went through a striking transformation recently. The colour of the lake which is usually emerald green, has turned to a pinkish hue. It is being said that this change has been brought about by the increase in salinity of the water, resulting in the growth of certain micro-organisms which produce a red pigment (carotenoid) thus changing the colour of the lake. For instance, most species of Halobacteriaceae produce a red-pink pigment due to the presence of bacterioruberin carotenoids. Similarly, Algae known as Dunaliella salina are green under favourable conditions. However, in saltier environments, a carotenoid pigment called beta-carotene which is pink in colour, becomes more and more concentrated, in a measure to protect the cell from high salinity. This study analyses wide-swath, high-resolution Sentinel-2 multispectral images to observe the changes in turbidity of the lake in recent months. Sentinel 2 images have been atmospherically corrected and a semi-empirical algorithm has been used over the red band (665 nm) to compute the turbidity values. A change in the turbidity values with respect to time has been charted.
Satellite Telemetry of Jacobin cuckoo using SARAL ALTIKA under IBIN Project
Impact of biomass burning on regional aerosol optical properties: A case study over northern India
IIRS Participates in Indian Arctic Expedition: Winter/Spring 2019, Mar. 25–Apr 29, 2019