World Ozone Day: Forest fires pose new threat to ozone layer

Study finds black carbon due to frequent, widespread wildfires may be widening the ozone hole

Does tropical ozone hole exist? Experts are divided

Tropical ozone hole is about seven times larger than Antarctica and it appears across all seasons

Antarctic ozone hole — one of the largest, deepest — closes

The annually occurring ozone hole over the Antarctic had rapidly grown from mid-August 2020 and peaked at around 24 mln sq km  

China continues to use ozone depleting CFC-11 in violation of Montreal Protocol

Between 40 and 60 per cent of total global CFC-11 emissions originate from Eastern China, reveals study. This is no good news for the ozone layer …

Is ozone layer depletion a ‘solved problem’?

On the International Day for the Preservation of the Ozone Layer, here is a reminder of how continued adherence to norms is key if we don’t …

Ozone-destroying greenhouse gas emissions from China increased significantly: Study

After 2012, emissions of dichloromethane from China accounted for 50–60 per cent of the global total

Ozone pollution increases male-male courtship in common fruit flies: Study

High level of ozone leads to drop in sex-determining pheromones   

Ozone layer to recover in 4 decades but aerosol injection may undo gains: UNEP

The success of the Montreal Protocol can inspire climate action, say scientists

Saving the Ozone

Starring [LTOR] Brian Gardiner Jonathan Shanklin and Joseph Farman

Antarctic ozone layer hole keeps shrinking in 2022: NASA, NOAA

Ban on chemicals adopted by Montreal Protocal attributed to gradual ozone layer recovery

Ozone layer recovery may take several lifetimes. But Montreal Protocol saved the Earth

The stratospheric ozone layer absorbs a portion of the ultraviolet radiation from the sun, preventing it from reaching the surface of Earth  

Factsheet: HFCs - Safe for Ozone, yet a Potent Greenhouse Gas

Montreal Protocol, the multilateral treaty to protect the ozone layer, has been a successful environmental agreement. But animpasse over …

Eco-thriller

Film>> Ozone Killers directed by Heinz Greuling and Thomas Weidenbach

Parts of US, Europe and Asia still grappling with problem of high level of ozone pollution

Parts of southern Europe, South Korea, Japan and China are experiencing more than 15 days a year of ozone levels above 70 ppb

Iodine drives substantial ground-level ozone loss in Arctic, climate change altering natural processes: Study

Such high concentrations of Iodine was not seen in Arctic before, say scientists

The disturbing Ozone alert

Tracking the phase out of ozone depleting substances

Bushfire smoke eats up the ozone protecting us from dangerous radiation. The damage will increase as the world heats up

We’re likely to see falling ozone concentrations in new places rather than just around the South Pole

NASA’s satellite observations provide first direct evidence of ozone hole recovery

The recovery of ozone hole is attributed to a ban on chlorine and chlorine compounds under the Montreal Protocol

Down To Earth wins prestigious Ozone Awards for best media coverage

The jury chose Down To Earth for its extensive and incisive reportage on ozone spanning over 25 years

Montreal Protocol talks begin on a positive note in Geneva

Negotiations to phase down HFCs continue from where they were left at in Dubai last year

Orbital eccentricity

Changes in nature of Earth’s orbit tend to drive glacial cycles  

Chink in the armour

Recent measurements show that protective ozone levels in the atmosphere touched a record low early this year

Climate variability may explain annual spike in ozone-destroying gas: Study

Forest fires fuelled by the El Niño Southern Oscillation (ENSO) phenomenon might be responsible for the short-term spikes in methyl bromide,…

HFC Phase down negotiations to continue in Geneva

Negotiations to focus mainly on HFC phase down and amendment proposals

During wind and rain

When the wind velocity is constant, expect rains and storms