Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. 24/7 Space News .




BLUE SKY
Flights over Pacific highest-producers of ozone
by Staff Writers
Cambridge, Mass. (UPI) Sep 5, 2013


disclaimer: image is for illustration purposes only

Flights over the Pacific, specifically leaving and entering Australia and New Zealand, create the most ozone, a new study says.

Conducted by Massachusetts Institute of Technology, the study was published Thursday in IOP Publishing's journal, Environmental Research Letters.

The study, which analyzed around 83,000 individual commercial flights, pinpointed a specific area over the Pacific approximately 621 miles to the east of the Solomon Islands that is the most sensitive to aircraft emissions.

In that region of the Pacific, researchers estimated that each 2.20 pounds of aircraft emissions -- specifically oxides of nitrogen, or NOx, such as nitric oxide and nitrogen dioxide - produces an extra 33 pounds of ozone in one year.

The sensitivity in the area was about five times higher than the sensitivity in Europe and 3.7 times higher than the sensitivity in North America, the study says, noting that the Pacific region is particularly vulnerable to aircraft emissions because it is relatively pristine, with little preexisting levels of nitrogen oxides.

"Our findings show that the cleanest parts of the atmosphere exhibit the most dramatic response to new emissions," said Steven Barrett, a professor at MIT and the lead author of the study, in a statement. "New emissions in this part of the Pacific will result in a relatively larger response from the atmosphere."

Overall, the study says, flights in the region in October cause 40 percent more NOx emissions than flights in April.

The researchers also found that the 10 highest ozone-producing flights originated from or were destined for New Zealand or Australia.

For example, a flight from Sydney to Bombay produced 56 pounds of ozone, the highest amount in the study, because the majority of the flight passed through the area in the Pacific where the sensitivity was the highest.

Barrett suggested that airlines could achieve reductions in their climate impact by re-routing planes to avoid sensitive areas.

"The places that the sensitivities are highest now are the fastest growing regions in terms of civil aviation growth, so there could potentially be ways to achieve significant reductions in the climate impact of aviation by focusing on re-routing aircraft around the particular regions of the world where ozone formation is highly sensitive to NOx emissions," he said.

The European Commission has projected that by 2020, global international aviation emissions might be around 70 percent higher than in 2005, even though there have been improvements in fuel efficiency. It projects that those emissions could grow by 300 to 700 percent by 2050.

.


Related Links
The Air We Breathe at TerraDaily.com






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

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




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





BLUE SKY
NASA's HS3 Mission Analyzes Saharan Dust Layer Over Eastern Atlantic
Washington DC (SPX) Aug 26, 2013
One of two of NASA's Global Hawk unmanned aircraft flew over the remnants of Tropical Storm Erin and investigated the Saharan Air Layer in the Eastern Atlantic Ocean on Aug. 20 and 21. The instruments aboard the Global Hawk sampled the environment of ex-Erin and revealed an elevated dust layer overrunning the storm. "Our goal with this flight was to look at how the Saharan air would move a ... read more


BLUE SKY
Scientists say water on moon may have originated on Earth

Moon landing mission to use "secret weapons"

NASA launches spacecraft to study Moon atmosphere

NASA-Funded Scientists Detect Water on Moon's Surface that Hints at Water Below

BLUE SKY
Upgrade to Mars rovers could aid discovery on more distant worlds

Investigating 'Coal Island' Rock Outcrop

Terramechanics research aims to keep Mars rovers rolling

New technology could make for smarter planet rovers

BLUE SKY
Elite Group of Young Scientists Embark on DARPA Research Efforts

From Elvis to E.T.? The Voyagers' extraordinary tale

Astronauts prepare for deep space -- by going deep underground

NASA's Voyager first spacecraft to exit solar system

BLUE SKY
China civilian technology satellites put into use

China to launch lunar lander by end of year: media

China launches three experimental satellites

Medical quarantine over for Shenzhou-10 astronauts

BLUE SKY
ISS Releases a White Stork and Awaits a Swan

Three astronauts back on Earth from ISS: mission control

ISS Crew Completes Spacewalk Preps

Russian cosmonaut set for space station mission resigns

BLUE SKY
Russian space official denies report of problem in Soyuz return

Lockheed Martin Atlas V To Launch Morelos-3 ComSat

Japan sets new date for satellite rocket launch

Arianespace delivers! EUTELSAT 25B/Es'hail 1 and GSAT-7 are orbited by Ariane 5

BLUE SKY
Coldest Brown Dwarfs Blur Lines between Stars and Planets

NASA-funded Program Helps Amateur Astronomers Detect Alien Worlds

Observations strongly suggest distant super-Earth has water atmosphere

Waking up to a new year

BLUE SKY
First laser-like X-ray light from a solid

Space's 'Ferrari' set to fall to Earth

Chinese-built Bolivian satellite tested in space simulator

Indiana Jones meets George Jetson




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal 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. 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