Climate change increases the risk of wildfires confirms new review

Published by  News Archive

On 14th Jan 2020

wildfires

Human-induced climate change promotes the conditions on which wildfires depend, increasing their likelihood - according to a review of research on global climate change and wildfire risk published today.

In light of the Australian fires, scientists from the University of East Anglia (UEA), Met Office Hadley Centre, University of Exeter, Imperial College London, and CSIRO Oceans and Atmosphere, have conducted a Rapid Response Review of 57 peer-reviewed papers published since the IPCC's Fifth Assessment Report in 2013.

All the studies show links between climate change and increased frequency or severity of fire weather - periods with a high fire risk due to a combination of high temperatures, low humidity, low rainfall and often high winds - though some note anomalies in a few regions.

Rising global temperatures, more frequent heatwaves and associated droughts in some regions increase the likelihood of wildfires by stimulating hot and dry conditions, promoting fire weather, which can be used as an overall measure of the impact of climate change on the risk of fires occurring.

Observational data shows that fire weather seasons have lengthened across approximately 25 per cent of the Earth’s vegetated surface, resulting in about a 20 per cent increase in global mean length of the fire weather season.

The literature review was carried out using the new ScienceBrief.org online platform, set up by UEA and the Tyndall Centre for Climate Change Research. ScienceBrief is written by scientists and aims to share scientific insights with the world and keep up with science, by making sense of peer-reviewed publications in a rapid and transparent way.

Dr Matthew Jones, Senior Research Associate at UEA’s Tyndall Centre and lead author of the review, said: “Overall, the 57 papers reviewed clearly show human-induced warming has already led to a global increase in the frequency and severity of fire weather, increasing the risks of wildfire.

“This has been seen in many regions, including the western US and Canada, southern Europe, Scandinavia and Amazonia. Human-induced warming is also increasing fire risks in other regions, including Siberia and Australia.

“However, there is also evidence that humans have significant potential to control how this fire risk translates into fire activity, in particular through land management decisions and ignition sources.”

At the global scale, burned area has decreased in recent decades, largely due to clearing of savannahs for agriculture and increased fire suppression. In contrast, burned area has increased in closed-canopy forests, likely in response to the dual pressures of climate change and forest degradation.

Co-author Professor Richard Betts, Head of Climate Impacts Research at the Met Office Hadley Centre and University of Exeter, said: “Fire weather does occur naturally but is becoming more severe and widespread due to climate change. Limiting global warming to well below 2°C would help avoid further increases in the risk of extreme fire weather.”

Professor Colin Prentice, Chair of Biosphere and Climate Impacts and Director of the Leverhulme Centre for Wildfires, Environment and Society, Imperial College London, added: "Wildfires can't be prevented, and the risks are increasing because of climate change. This makes it urgent to consider ways of reducing the risks to people. Land planning should take the increasing risk in fire weather into account.”

The Rapid Response Review is published on ScienceBrief. The papers used in review can be viewed at https://sciencebrief.org/topics/climate-change-science/wildfires.

This is the first review to use the ScienceBrief resource, with further work planned on areas related to climate change science and its impacts in the run up to the United Nations Climate Change Conference - COP26 - in November.

Study Environmental Sciences at UEA

More world-leading research

Latest News

  News
An Andean bear and her cubs stand on a fallen tree trunk.
18 Jan 2022

Saving species through genomics in megadiverse Colombia  

The world’s second-most megadiverse country stands to benefit in many ways through membership in the Earth Biogenome Project, according to research from UEA.

Read more >
  News
A child stares glumly at a plate of food
18 Jan 2022

Why children may be off their food after Covid

More children could be turning into ‘fussy eaters’ after a bout of Covid, according to smell experts at UEA.

Read more >
  News
Pen on a book
17 Jan 2022

New Centre for Contemporary Poetry to shine a light on marginalised poets

UEA is set to become the home of a new collection of archives amplifying the voices of poets from underrepresented groups in British and Irish literature, thanks...

Read more >
  News
A pregnant woman stands next to a window
17 Jan 2022

Helping new mums stay smoke free

UEA researchers are recruiting to a major new study to help new mums stay smoke free.

Read more >
Are you searching for something?
  News
A pregnant woman stands next to a window
17 Jan 2022

Helping new mums stay smoke free

UEA researchers are recruiting to a major new study to help new mums stay smoke free.

Read more >
  News
11 Jan 2022

Norwich Business School joins highly acclaimed Small Business Charter

The accolade is in recognition of its expertise in supporting small businesses, student entrepreneurship, and the local economy, with Norwich Business School at...

Read more >
  News
A selection of fruits and vegetables representing a Mediterranean diet.
10 Jan 2022

Could a Mediterranean diet be key to prevent dementia?

UEA researchers are launching a study to see whether the beneficial effects of a Mediterranean diet could help prevent dementia.

Read more >
  News
A woman at an outdoor group exercise class stretches her arms
07 Jan 2022

How exercise interventions could help people with asthma

Interventions aimed at promoting physical activity in people with asthma could improve their symptoms and quality of life – according to new UEA research.

Read more >
  News
Photograph of the US research ship Nathaniel B Palmer at the ice front of Thwaites Glacier
05 Jan 2022

UEA scientists lead new mission to Antarctica’s remote Thwaites Glacier

On the 100th anniversary of the polar explorer Sir Ernest Shackleton’s death, a research mission using a fleet of underwater robots to determine the impact of...

Read more >
  News
A man wears a headset device designed to help diagnose dizziness.
22 Dec 2021

£1.25 million funding boost for dizziness device

UEA researchers have been awarded £1.25 million to develop a device to help people with dizziness.

Read more >
  News
16 Dec 2021

Bestselling authors and inspirational thought leaders announced in UEA Live’s spring line-up

With headliners ranging from literary heavy hitters to up-and-coming social activists, and books that include memoir, political commentary, thriller and...

Read more >