Heatwaves And Wildfires To Worsen Air Pollution, Stated By The UN

More frequent and intense heatwaves and wildfires driven by climate change are expected to worsen the quality of the air we breathe, harming human health and ecosystems, the UN warned Wednesday.

A new report from the UN’s World Meteorological Organization (WMO) cautioned that the interaction between pollution and climate change would impact hundreds of millions of people over the coming century, and urged action to rein in the harm.

The WMO’s annual Air Quality and Climate Bulletin examined the impacts of large wildfires across Siberia and western North America in 2021, finding that they produced widespread increases in health hazards, with concentrations in eastern Siberia reaching “levels not observed before”.

Tiny particles with a diameter of less than 2.5 micrometres (PM2.5) are considered particularly harmful since they can penetrate deep into the lungs or cardiovascular system.

“As the globe warms, wildfires and associated air pollution are expected to increase, even under a low emissions scenario,” WMO chief Petteri Taalas said in a statement.

“In addition to human health impacts, this will also affect ecosystems as air pollutants settle from the atmosphere to Earth’s surface.”

Foretaste Of The Future Due To Heatwaves And Wildfires

At the global scale, there has been a reduction over the past two decades in the total burned area, as a result of decreasing numbers of fires in savannas and grasslands.

But WMO said that some regions like western North America, the Amazon and Australia were seeing far more fires.

Even beyond wildfires, a hotter climate can drive up pollution and worsen air quality.

Taalas pointed out that severe heatwaves in Europe and China this year, coupled with stable high atmospheric conditions, sunlight and low wind speeds, had been “conducive to high pollution levels,” warning that “this is a foretaste of the future.”

“We expect a further increase in the frequency, intensity and duration of heatwaves, which could lead to even worse air quality,” he said.

This phenomenon is known as the “climate penalty”, which refers to how climate change amplifies ground-level ozone production, which negatively impacts air quality.

In the stratosphere, ozone provides important protection from cancer-causing ultraviolet rays, but closer to the ground it is very hazardous for human health.

If emission levels remain high, this climate penalty is expected to account for “a fifth of all surface ozone concentration increase,” WMO scientific officer Lorenzo Labrador told reporters.

He warned that most of that increase will happen over Asia, “and there you have about one quarter of the entire world population.”

The WMO called for action, stressing that “a worldwide carbon neutrality emissions scenario would limit the future occurrence of extreme ozone air pollution episodes.”

The report points out that air quality and climate are interconnected, since chemicals that worsen air quality are normally co-emitted with greenhouse gases.

“Changes in one inevitably cause changes in the other,” it said.

Sources: AFP

Adib Mohd

Recent Posts

Year-End Getaways to Indonesia with Deals from RM40 – Discover Hidden Gems Beyond Bali

As the year winds down, Traveloka is helping travelers rediscover Indonesia’s locally loved destinations through… Read More

3 days ago

Le Méridien Kuala Lumpur Unveils “A Timeless Collection” of Mooncakes This Mid-Autumn

This Mid-Autumn Festival, Le Méridien Kuala Lumpur invites guests to celebrate tradition with elegance through… Read More

3 days ago

Google Unveils Pixel 10 Series, Pro Fold, Watch 4 & Buds 2a at Made by Google 2025

Google has just pulled back the curtain on its newest Pixel lineup at the annual… Read More

3 days ago

PayNet & Ant International Expand Partnership to Take DuitNow QR Global

Payments Network Malaysia (PayNet) and Ant International have signed a new Memorandum of Understanding (MoU)… Read More

3 days ago

ZTE & MMU Team Up to Build Malaysia’s Next Wave of ICT Talent

ZTE Corporation has signed a Memorandum of Understanding (MoU) with Multimedia University (MMU), paving the… Read More

3 days ago

Melbourne Beyond the City: Road Trips and Campervan Adventures

Melbourne is famous for its laneways, coffee culture, and buzzing arts scene, but here’s a… Read More

4 days ago

This website uses cookies.