Featured Research

from universities, journals, and other organizations

New Tool Differentiates Artificial From Natural Nitrogen-oxide Pollution

Date:
March 28, 2009
Source:
American Geophysical Union
Summary:
Nitrogen oxides in the atmosphere, which are produced by lightning, biomass burning, and soil outgassing, are converted into atmospheric nitrate through oxidation reactions. Nitrogen oxide, itself a pollutant, controls the production of ozone, which in turn is a greenhouse gas and a pollutant at ground levels. Atmospheric nitrate contributes to the load of atmospheric particulate matter and, along with sulfate, to acid rain.

Nitrogen oxides in the atmosphere, which are produced by lightning, biomass burning, and soil outgassing, are converted into atmospheric nitrate through oxidation reactions. Nitrogen oxide, itself a pollutant, controls the production of ozone, which in turn is a greenhouse gas and a pollutant at ground levels. Atmospheric nitrate contributes to the load of atmospheric particulate matter and, along with sulfate, to acid rain.

Related Articles


Despite efforts to regulate and monitor emissions, nitrogen oxide and atmospheric nitrate burdens in the atmosphere are increasing in many regions.

To learn more, Morin et al. study the stable isotopic composition of nitrate within aerosol samples, collected along a shipborne transect, in the lower atmosphere over the Atlantic Ocean from 65 degrees South to 79 degrees North.

They find that in nonpolar regions, nitrate derived from anthropogenically emitted nitrogen oxide had isotopic properties distinct from locations influenced by natural nitrogen oxide sources.

Further, air masses exposed to snow-covered areas have low nitrogen isotopic ratios, showing that snowpack emissions of nitrogen oxide from upwind regions can have a significant effect on the local surface budget of reactive nitrogen.

The authors report their findings in the Journal of Geophysical Research-Atmospheres. They include: S. Morin, J. Savarino, and F. Domine: Institut National des Sciences de l'Univers, CNRS, Grenoble, France; also at Laboratoire de Glaciologie et Géophysique de l'Environnement, Université Josef Fourier, Grenoble, France; M. M. Frey: Institut National des Sciences de l'Univers, CNRS, Grenoble, France; also at Laboratoire de Glaciologie et Géophysique de l'Environnement, Université Josef Fourier, Grenoble, France; now at British Antarctic Survey, Natural Environment Research Council, Cambridge, U.K.; H.-W. Jacobi: Institut National des Sciences de l'Univers, CNRS, Grenoble, France; also at Laboratoire de Glaciologie et Géophysique de l'Environnement, Université Josef Fourier, Grenoble, France; Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany; L. Kaleschke; ZMAW, Institute of Oceanography, University of Hamburg, Hamburg, Germany; J. M. F. Martins: Institut National des Sciences de l'Univers, CNRS, Grenoble, France; also at Laboratoire d'Étude des Transferts en Hydrologie et Environnement, Université Josef Fourier, Grenoble, France.


Story Source:

The above story is based on materials provided by American Geophysical Union. Note: Materials may be edited for content and length.


Journal Reference:

  1. Morin et al. Comprehensive isotopic composition of atmospheric nitrate in the Atlantic Ocean boundary layer from 65 degrees S to 79 degrees N. Journal of Geophysical Research, 2009; 114 (d5): D05303 DOI: 10.1029/2008JD010696

Cite This Page:

American Geophysical Union. "New Tool Differentiates Artificial From Natural Nitrogen-oxide Pollution." ScienceDaily. ScienceDaily, 28 March 2009. <www.sciencedaily.com/releases/2009/03/090325155829.htm>.
American Geophysical Union. (2009, March 28). New Tool Differentiates Artificial From Natural Nitrogen-oxide Pollution. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2009/03/090325155829.htm
American Geophysical Union. "New Tool Differentiates Artificial From Natural Nitrogen-oxide Pollution." ScienceDaily. www.sciencedaily.com/releases/2009/03/090325155829.htm (accessed December 20, 2014).

Share This


More From ScienceDaily



More Earth & Climate News

Saturday, December 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Lava on Track to Hit Hawaii Market

Raw: Lava on Track to Hit Hawaii Market

AP (Dec. 19, 2014) — Lava from an active volcano on Hawaii's Big Island slowed slightly but stayed on track to hit a shopping center in the small town of Pahoa. (Dec. 19) Video provided by AP
Powered by NewsLook.com
Birds Might Be Better Meteorologists Than Us

Birds Might Be Better Meteorologists Than Us

Newsy (Dec. 19, 2014) — A new study suggests a certain type of bird was able to sense a tornado outbreak that moved through the U.S. a day before it hit. Video provided by Newsy
Powered by NewsLook.com
Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) — The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Arctic Warming Twice As Fast As Rest Of Planet

Arctic Warming Twice As Fast As Rest Of Planet

Newsy (Dec. 18, 2014) — The Arctic is warming twice as fast as the rest of the planet, thanks in part to something called feedback. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins