With increasing anthropogenic activities and the escalating impacts of climate change, flood hazards have become more frequent and severe, causing extensive damage to crops, settlements, and infrastructure. Flood hydrologists have long faced challenges in accurately estimating flood depths-an essential parameter for effective disaster response and risk mitigation. Although optical and microwave satellite imagery have significantly advanced flood mapping by providing Continue Reading »

Authors: Manu Mehta, Shivani, Khushbu Dahiya, Somya Garg and Ranu Gadi, Indian Institute of Remote Sensing, ISRO Dehradun Aerosols are well known for their impact on the climate as well as public health. Numerous studies have outlined these dual effects of aerosols, which highlight the urgent need for effective mitigation techniques and additional research. Due to air pollution, India, a Continue Reading »

Authors- Ashok Ghildiyal and Ashish Joshi, Indian Institute of Remote Sensing, ISRO Dehradun NOAA weather satellites continuously transmit Automatic Picture Transmission (APT) signals that carry live images of the Earth’s surface. These signals can be received using a software-defined radio (SDR) such as an RTL-SDR dongle, paired with a suitable antenna and decoding software. The NOAA satellites, particularly NOAA-18 and Continue Reading »

Author: Ashish Joshi, IIRS An oil spill is one of the worst environmental disasters which affect marine ecosystems due to anthropogenic activities. Oil spills can be detected, monitored, and studied using various types of remote sensing techniques. Synthetic Aperture Radar (SAR) is widely used in oil spill detection due to its all-weather and all-time capabilities. Oil Spills have a smooth Continue Reading »

Authors: R.P. Singh, Abhishek Danodia and Kamal Pandey The Narmada Valley, extending across the states of Madhya Pradesh and Gujarat, is one of India’s key agricultural zones, distinguished by its fertile soils and well-developed irrigation infrastructure. Agriculture is the predominant land use in the region, occupying approximately 56.9% of the total area, while forests account for about 32.88%. Geographically, the Continue Reading »