Mamta Chauhan, Saswati Panda, Ankita Gaur, R.P. Singh and R. S. Chatterjee Raman spectroscopy is an analytical technique to identify mineral, rocks and detect associated organic compounds. This technique is based on the phenomenon of raman effect which causes frequency difference between the incident and the fraction of scattered light. It is inelastic scattering of light by matter in which Continue Reading »

Manu Mehta and Akhilesh Kumar Estimating atmospheric aerosol levels is crucial for accurate radiative forcing calculations, understanding aerosol effects on cloud formation, assessing human health impacts, and planning pollution control. Continuous monitoring of aerosols in both space and time is essential to understand its effects in human life. Ground-based networks like AERONET and ARFINET use instruments such as sun-photometers and Continue Reading »

Life of earth is linked to availability of water and rivers provides water to sustain the human civilization. Ganga river is one of the longest river in India and  is associated with sediment transport and meandering. Ganga river originate in the Himalayas, and it carries lot of sediments. Sediment deposition prevent  any river from flowing straight and cause meander. Gandak Continue Reading »

Dr. Manu Mehta and Mr. Akhilesh Kumar This recent study at Indian Institute of Remote Sensing (IIRS), ISRO, presents the first known comprehensive global validation of Aerosol Optical Thickness (AOT) measurements derived from the Sentinel 2 Sen2Cor algorithm, covering a significant period of 5 years from 2018 to 2022 utilizing an extensive dataset from over 400 AERONET stations (each year) Continue Reading »

Forests, often referred to as the "lungs of the planet," play a crucial role in regulating the Earth’s climate and sequestering carbon dioxide. To understand the effects of climate change and formulate mitigation measures, it is important to know how climate change affects the biogeochemical cycles of forest, especially carbon and water cycles that sustain life on our planet. In Continue Reading »