Atmosphere And Ozone Layer

Order of the National Green Tribunal regarding ozone pollution across urban India, 21/03/2025

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 …

Potentially deadly consequences of El Nino for northern Australia

Persistent drought in northern Australia is having potentially deadly consequences as snakes seek refuge in urban areas during their quest for water. Paramedics in Queensland are treating more than a dozen snakebite victims per week, local media reported on Friday as experts warn the deadly eastern brown snake are becoming …

Peru prepares for El Nino

"After the rain, there was a silence followed by terrible thunder and lightning," says 63-year-old resident Cristina Inga. Her house was destroyed first by flooding, and then tonnes of rocks tumbled down from the mountain. "We survived by escaping through the roof," she recalls. "All the neighbours did the same; …

Namibia: Strong El Niño Presence Does Not Bode Well for Namibian Farmers

All areas of Namibia have only a 25 percent chance of experiencing a wetter than normal rainy season, a 40 percent likelihood of a normal rainy season, and a 35 percent chance of below-normal amounts of rain from October this year to March next year. This bleak picture unfolds from …

Indonesia failed to predict severity of El Nino weather: minister

Indonesia's weather agency failed to predict that the effects of the El Nino weather phenomenon this year would be worse than in 1997, a senior minister said on Wednesday, as the government considers declaring a national emergency due to forest fires. The fires raging across the archipelago have created a …

Australian state scorches through hottest October on record, as El Nino bites

The Australian state of Victoria is on track for its hottest and third driest October on record, as the effects of a severe El Nino weather pattern take hold. Bureau of Meteorologist climatologist Jonathan Pollock said on Wednesday that the difference between the average and the actual maximum temperatures across …

Kenya: Nakuru Forms Team for El Niño

Nakuru county has formed a team to deal with the expected El Niño rains. County secretary Joseph Mutari yesterday said the task force co-chaired by Roads executive Joel Maina and his Water counterpart Richard Rop will identify flood-prone areas. He said the team also includes MCAs and residents from various …

Ozone Depletion May be Caused By Common Chemical Coolants

It turns out that common chemical coolants actually lead to ozone depletion. The coolants, known as hydrofluorocarbons (HFC), contribute by a small amount, which counters a decades-old assumption about them. The ozone layer comprises a belt of ozone molecules located primarily in the lower stratosphere. It is responsible for absorbing …

El Niño is back and in a big way

Strongest El Niño in decades, will have wide-ranging effects It has choked Singapore with smoke, triggered Pacific typhoons and left Vietnamese coffee growers staring nervously at dwindling reservoirs. In Africa, cocoa farmers are blaming it for bad harvests, and in the Americas, it has Argentines bracing for lower milk production …

Black carbon mitigation and the role of the Global Environment Facility

Black carbon causes millions of deaths every year and contributes to the warming of the planet. In the atmosphere it appears as air pollution, with emissions arising mainly from the combustion of diesel fuel and biofuels, coal-fired power stations, biomass cook stoves, brick kilns and vegetation burning in open fields. …

Aerosol effect on the mobility of cloud droplets

Cloud droplet mobility is referred to here as a measure of the droplets' ability to move with ambient air. We claim that an important part of the aerosol effect on convective clouds is driven by changes in droplet mobility. Original Source

Vegetation fires, absorbing aerosols and smoke plume characteristics in diverse biomass burning regions of Asia

In this study, researchers explored the relationships between the satellite-retrievedfire counts(FC), fire radiative power(FRP) and aerosol indices using multi-satellite datasets at a daily time-step covering ten different biomass burning regions in Asia.Wefirst assessed the variations inMODIS-retrieved aerosol optical depths (AOD’s)in agriculture,forests, plantation and peat land burning regions and then usedMODIS …

Ozone pollution in Delhi crosses permissible limit again

Surface ozone pollution in Delhi has crossed the permissible limit, for the second time in a year, with experts blaming weak monsoon for the phenomenon. Though the ozone layer limit in Mumbai and Pune has been in the permissible limits for the past two weeks, it is increasing in these …

Despite El Nino, next monsoon will be normal, predicts IMD

The possibility of a normal monsoon is high next year though its onset might be delayed because of the tail end of El Nino. Amid reports from forecasters about the possibility of El Nino continuing during the first few months of 2016, experts from the India Meteorological Department (IMD) found …

Variations in atmospheric structure and wave activity in changing monsoon conditions over Mahabubnagar, as observed during Caipeex-2011

Upper-air radiosonde observations, taken during “Cloud Aerosol Interaction and Precipitation Enhancement EXperiment” (CAIPEEX) at Mahabubnagar (16.73°N, 77.98°E) under Integrated Ground Observation Campaign (IGOC) during the second half of southwest monsoon of 2011 have been analysed. Various weather data taken from India Meteorological Department as well as NCEP/NCAR reanalyzed upper-air wind …

High ozone levels raise alarm

With densely-populated areas in the city, especially Punjabi Bagh and R.K. Puram, showing high levels of ozone, environmentalists and doctors have expressed their concern over their adverse effect on children, dengue patients, and those with compromised respiratory function. “In the dengue season, stressed respiratory function with high levels of ozone …

Break in monsoon increases rainfall deficiency further

Another break in monsoon during its last leg has caused the rainfall deficiency in Marathwada and central Maharashtra to increase again, data provided by the India Meteorological Department (IMD) has shown. The good rainfall spell a few days ago had reduced rainfall deficiency in these regions by almost 10%. However, …

El Niño takes toll on US rice farmers – and points to even higher prices

Blame El Niño. The weather phenomenon is causing havoc for US rice farmers and a sharp price spike in the world’s most important staple food may foreshadow possibly higher prices in Asia in the coming months. While other commodities have hit recent lows, US rice futures prices are up nearly …

Satellite detection, long-range transport, and air quality impacts of volcanic sulfur dioxide from the 2014–2015 flood lava eruption at Bárðarbunga (Iceland)

The 2014–2015 Bárðarbunga-Veiðivötn fissure eruption at Holuhraun produced about 1.5 km3 of lava, making it the largest eruption in Iceland in more than 200 years. Over the course of the eruption, daily volcanic sulfur dioxide (SO2) emissions exceeded daily SO2 emissions from all anthropogenic sources in Europe in 2010 by …

El Niño Causes Water Rationing in 210 Colombian Municipalities

A total of 210, among the more than 1,100 municipalities, in Colombia are suffering from water rationing and 300 more are facing a risk of water shortage owing to El Niño, Colombian Housing Minister Luis Felipe Henao said on Monday. “The current El Niño phenomenon is the most serious one …

El Nino leaves North MP, Bundelkhand dry

BHOPAL: As monsoon is all set to withdraw by month end, El Nino has hit hard whole of Bundelkhand and Gwalior-Chambal region and parts of eastern MP. Scarce rain in these areas have been badly damaged crops. Director, Indian Meteorological department state unit Anupam Kashyapi said after scarce rain, it …

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