Subscribe to our free daily newsletters
. 24/7 Space News .




Subscribe to our free daily newsletters



CLIMATE SCIENCE
Artificially cooling planet 'risky strategy,' new research shows
by Staff Writers
Exeter UK (SPX) Nov 15, 2017


illustration only

Proposals to reduce the effects of global warming by imitating volcanic eruptions could have a devastating effect on global regions prone to either tumultuous storms or prolonged drought, new research has shown.

Geoengineering - the intentional manipulation of the climate to counter the effect of global warming by injecting aerosols artificially into the atmosphere - has been mooted as a potential way to deal with climate change.

However new research led by climate experts from the University of Exeter suggests that targeting geoengineering in one hemisphere could have a severely detrimental impact for the other.

They suggest that while injections of aerosols in the northern hemisphere would reduce tropical cyclone activity - responsible for such recent phenomena including Hurricane Katrina - it would at the same time lead to increased likelihood for drought in the Sahel, the area of sub-Saharan Africa just south of the Sahara desert.

In response, the team of researchers have called on policymakers worldwide to strictly regulate any large scale unilateral geoengineering programmes in the future to prevent inducing natural disasters in different parts of the world.

The study is published in leading scientific journal Nature Communications on Tuesday, November 14 2017.

Dr Anthony Jones, A climate science expert from the University of Exeter and lead author on the paper said: "Our results confirm that regional solar geoengineering is a highly risky strategy which could simultaneously benefit one region to the detriment of another. It is vital that policymakers take solar geoengineering seriously and act swiftly to install effective regulation."

The innovative research centres on the impact solar geoengineering methods that inject aerosols into the atmosphere may have on the frequency of tropical cyclones.

The controversial approach, known as stratospheric aerosol injection, is designed to effectively cool the Earth's surface by reflecting some sunlight before it reaches the surface. The proposals mimic the aftermath of volcanic eruptions, when aerosols are naturally injected into the atmosphere.

In the study, the researchers use sophisticated simulations with a fully coupled atmosphere-ocean model to investigate the effect of hemispheric stratospheric aerosol injection on North Atlantic tropical cyclone frequency.

They find injections of aerosols in the northern hemisphere would decrease North Atlantic tropical cyclone frequency, while injections contained to the southern hemisphere may potentially enhance it.

Crucially, the team warn however that while tropical cyclone activity in the North Atlantic could be suppressed by northern hemisphere injections, this would, at the same time, induce droughts in the Sahel.

These results suggest the uncertain effects of solar geoengineering - a proposed approach to counteract global warming - which should be considered by policymakers.

Professor Jim Haywood, from the Mathematics department at the University of Exeter and co-author of the study added: "This research shows how a global temperature target such as 1.5 or 2C needs to be combined with information on a more regional scale to properly assess the full range of climate impacts."

The research, Impacts of hemispheric solar geoengineering on tropical cyclone frequency, is published in the journal Nature Communications.

Research paper

CLIMATE SCIENCE
Merkel, Macron to front diplomatic push at UN climate talks
Bonn (AFP) Nov 15, 2017
The leaders of France and Germany will lead a diplomatic charge Wednesday to reinvigorate UN climate talks clouded by Washington's rejection of a planet rescue plan backed by the rest of the world. Despite announcing it will withdraw from the Paris Agreement, the United States has a delegation at the Bonn huddle, tasked with drawing up rules for executing the hard-fought pact on winding down ... read more

Related Links
University of Exeter
Climate Science News - Modeling, Mitigation Adaptation


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

CLIMATE SCIENCE
NASA Moves Up Critical Crew Safety Launch Abort Test

NanoRacks launches Full External Cygnus Deployer on OA-8 to ISS

Robotic arm reaches out and grapples Cygnus

Colossal SoftBank fund could shake up tech world

CLIMATE SCIENCE
Orbital ATK launches eighth cargo mission to space

The state of commercial spaceports in 2017

Vega launches Earth observation satellite for Morocco

Orbital ATK Successfully Tests First Motor Case for Next Generation Launch Vehicle

CLIMATE SCIENCE
Mars 2020 Mission performs first supersonic parachute test

New partnership on Mars drone applications research

Powering up NASA's human reach for the Red Planet

NASA Opens $2 Million Third Phase of 3D-Printed Habitat Competition

CLIMATE SCIENCE
China's reusable spacecraft to be launched in 2020

Space will see Communist loyalty: Chinese astronaut

China launches three satellites

Mars probe to carry 13 types of payload on 2020 mission

CLIMATE SCIENCE
Astronaut meets volcano

European Space Week starts in Estonia

New Chinese sat comms company awaits approval

Myanmar to launch own satellite system-2 in 2019: vice president

CLIMATE SCIENCE
Leonardo tapped by British Royal Air Force for radar testing equipment

A new way to mix oil and water

Building better silk

Plasma from lasers can shed light on cosmic rays, solar eruptions

CLIMATE SCIENCE
Astronomers See Moving Shadows Around Planet-Forming Star

NASA plans mission to study why planets lose their atmospheres

Scientists find potential 'missing link' in chemistry that led to life on earth

18-Month Twinkle in a Forming Star Suggests a Very Young Planet

CLIMATE SCIENCE
Jupiter's Stunning Southern Hemisphere

Watching Jupiter's multiple pulsating X-ray Aurora

Help Nickname New Horizons' Next Flyby Target

Juno Aces 8th Science Pass of Jupiter, Names New Project Manager




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement