Since the 1960s the Central Asian lake that used to be known as the Aral Sea has almost completely dried out, due to human activity. This environmental disaster has created a new desert known as the Aralkum (the “Aral Desert”), which now has a size of 255 km × 255 km across that has appeared since 1960 on the seabed Continue Reading »

Authors- Suresh Kumar and Justin George K In recent times machine learning (ML) models have emerged as potential tool in Digital Soil Mapping (DSM). It is an innovative method that generates precise soil information employing geospatial technology, including remote sensing, geographic information systems (GIS), geographic position system (GPS) and statistical modelling. Environmental covariates derived using RS and GIS are integrated Continue Reading »

Authors: Sachiko Mohanty, D. Mitra, and R. P. Singh Satellite altimetry sea surface height (SSH) data has been used to study the ocean circulation, mesoscale eddies, and internal tidal waves with a scale more than 100 km. However, sub-mesoscale ocean dynamics (~spatial scale less than 100 km) was unable to resolve using the conventional satellite data.  Surface Water and Ocean Continue Reading »

What if a satellite could detect a water-logged surface beneath the dense forests, which is invisible to ordinary optical cameras? A new Radar Imaging Satellite, NASA-ISRO Synthetic Aperture Radar- NISAR, is making this possible, helping scientists and researchers to understand the forests, wetlands, vegetation, and environmental changes in a completely new way. NISAR is an exciting new Earth-observation satellite mission Continue Reading »

With the successful launch of the NASA-ISRO Synthetic Aperture Radar (NISAR) mission on 30th July 2025 from ISRO Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota, a new era of SAR dual/multi-frequency SAR missions has begun. NISAR is a jointly developed SAR mission with L-Band (24 cm wavelength) developed by NASA and S-band (9.4 cm wavelength) developed by ISRO. The most Continue Reading »