Order of the National Green Tribunal in the matter of News Item titled “CSE report finds dangerous increase in ozone pollution across urban India” appearing in Down to Earth dated 06.08.2024. The Principal Bench of the NGT heard the matter on March 21, 2025. In the original application, registered suo …
Melbourne: Scientists have claimed that the start of the Universe should be modelled not as a Big Bang but a ‘Big Chill’ like water freezing into ice. Physicists from the University of Melbourne and Royal Melbourne Institute of Technology have suggested that by investigating the cracks and crevices common to …
The observed presence of water vapor convectively injected deep into the stratosphere over the United States can fundamentally change the catalytic chlorine/bromine free-radical chemistry of the lower stratosphere by shifting total available inorganic chlorine into the catalytically active free-radical form, ClO. This chemical shift markedly affects total ozone loss rates …
Atmospheric oxidation is a key phenomenon that connects atmospheric chemistry with globally challenging environmental issues, such as climate change, stratospheric ozone loss, acidification of soils and water, and health effects of air quality. Ozone, the hydroxyl radical and the nitrate radical are generally considered to be the dominant oxidants that …
MUMBAI: With lake levels not promising enough due to the rains largely playing truant, the Brihanmumbai Municipal Corporation (BMC) will continue with its 10% water cut and review the situation at the civic standing committee meeting on Wednesday. The civic body also plans to rope in the Israeli-based Mekorot for …
With the monsoon below normal this year and particularly patchy across a few regions, Gujarat, Karnataka and Maharashtra are exploring cloud-seeding options to bring rains. The India Meteorological Department has forecast a 23% deficient monsoon this year. Hindustan Zinc, a Vedanta Resources' subsidiary and the world’s largest manufacturer of zinc, …
The observed presence of water vapor convectively injected deep into the stratosphere over the United States fundamentally changes the catalytic chlorine/bromine free radical chemistry of the lower stratosphere by shifting total available inorganic chlorine into the catalytically active free-radical form, ClO. This chemical shift markedly affects total ozone loss rates …
An EIA (Environmental Investigation Agency) report to the 32nd meeting of the Open-Ended Working Group of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer.
Limitations in current capabilities to constrain aerosols adversely impact atmospheric simulations. Typically, aerosol burdens within models are constrained employing satellite aerosol optical properties, which are not available under cloudy conditions. Here we set the first steps to overcome the long-standing limitation that aerosols cannot be constrained using satellite remote sensing …
Atmospheric models generally assume that aerosol particles are in equilibrium with the surrounding gas phase. However, recent observations that secondary organic aerosols can exist in a glassy state have highlighted the need to more fully understand the kinetic limitations that may control water partitioning in ambient particles. Here, we explore …
Europe's latest weather satellite blasted off into space on 5 July on board its Ariane rocket. Meteosat-10 is now being manoeuvred into a geostationary position, 36,000km above the Earth, over the Gulf of Guinea on the equator. By 6 August the satellite will produce detailed images of Europe and Africa …
WASHINGTON, 12 JULY: US astronomers using the Hubble Space Telescope have discovered a fifth and tiniest moon yet orbiting the icy dwarf planet Pluto. The mini-moon is estimated to be irregular in shape and between 10 km and 25 km across. It is visible as a speck of light in …
MUMBAI: In some welcome relief to drought-hit areas in the state, good rains in parts of the state has led to rise in water levels in the state. A 2 per cent increase in the overall quantity of water available in dams was recorded in the past week, a statement …
The latest spacecraft in Europe's long-running Meteosat series has just gone into orbit on an Ariane rocket. It is now being manoeuvred into a position some 36,000km above the Earth from where it can keep a constant watch on developing weather systems. The spacecraft is the 10th Meteosat platform to …
The U.S. space agency NASA said Thursday that it was leaving the door open to reviving a canceled plan for a major Southeast Asia climate study that may have run afoul of internal Thai politics. No decision has been made "on whether NASA will be able to fly the mission …
It might still be too early to say so but indications of a good monsoon this season are fast receding. With the first month of the four-month season almost over, there is already a 23 per cent deficiency in rainfall, and the monsoon has entered another weak phase which is …
Volatile organic compounds (VOCs) are ubiquitous atmospheric constituents of both anthropogenic and natural origin. VOCs are important precursors of tropospheric ozone (O3), and can impact air quality and global climate. Most of primary VOCs and their oxidized products makeup a major fraction of secondary pollutants in urbanized regions. Due to …
Increasing urban surface temperature due to change of natural surfaces is one of the growing environmental problems in urban areas, especially in cities like Delhi. The present work is an attempt to assess the urban surface temperature in Delhi using remote sensing and GIS techniques. ASTER datasets of thermal bands …
Ending the long wait, rains lashed large parts of the State prompting the weather office to announce the onset of southwest monsoon in Odisha. Late by more than a week, the showers brought the mercury level down and relief to a State tortured by an unrelenting heatwave. The downpour, which …
Passers-by push a vehicle through a water-logged road after heavy showers on Friday. DELUGE IN GUWAHATI: Passers-by push a vehicle through a water-logged road after heavy showers on Friday. — PTI The Met Office today issued the monsoon report card for the second week and the score is certainly not …
Use of dynamical models will replace statistical methods, providing greater precision HARI PULAKKAT BANGALORE Information about monsoon rainfall is a key input to many farmers, but all they can hope to get in advance is a forecast about the total rainfall for the country for the entire season. Armed with …
