Featured Research

from universities, journals, and other organizations

Increasing Ozone Over The Atlantic Ocean

Date:
May 17, 2004
Source:
Max Planck Society
Summary:
Ship-borne ozone measurements, performed by researchers of the Max Planck Institute for Chemistry and the German Weather Service over the Atlantic Ocean during the period 1977-2002, show that the ozone trends in the northern mid-latitudes are small.

The German research vessels "Meteor" and "Polarstern" in the tropical Atlantic, two of the ships on which the ozone measurements have been performed.
Credit: Image : Prof. Arne Körtzinger, Leibniz-Institut für Meereswissenschaften

Ship-borne ozone measurements, performed by researchers of the Max Planck Institute for Chemistry and the German Weather Service over the Atlantic Ocean during the period 1977-2002, show that the ozone trends in the northern mid-latitudes are small. In contrast, remarkably large ozone trends occur at low latitudes and in the Southern Hemisphere, implying that the ozone smog problem has expanded far beyond the areas traditionally affected by photochemical air pollution in Europe and the USA (Science Express, 13 May, 2004).

Related Articles


Ozone smog was first discovered in the Los Angeles basin in the 1940s, an area where traffic emissions of nitrogen oxides (NO and NO2) efficiently promote photochemical air pollution. The nitrogen oxides, released from the combustion of fossil fuels and also by biomass burning, act as catalysts of ozone formation. In turn, this reduces air quality and impairs human health, agricultural crops and natural ecosystems. Furthermore, ozone is a greenhouse gas, so that its increasing concentration in the troposphere contributes to climate change. In the post-war industrialization in the 1960s and 1970s, ozone increased rapidly in Europe and the USA. In addition to Los Angeles, especially the eastern USA and southern Europe suffer from high ozone concentrations in summer, so that air quality standards are often violated. Nevertheless, the ozone increases have been moderated after 1980 by the introduction of catalytic converters in car exhausts and the mitigation of industrial air pollution.

The article in Science is based on ozone measurements by the Max Planck Institute for Chemistry (Mainz) and the German Weather Service (Hohenpeißenberg and former Meteorological Observatory Hamburg), taken on ships sailing the Atlantic Ocean since 1977. The results confirm that in middle latitudes in the northern hemisphere the ozone concentrations are quite high, although the increases since about 1980 have not been very large. Remarkably and unexpectedly, however, in the subtropics, the tropics and the southern hemisphere, ozone increases since 1980 have been much larger. In some regions the ozone levels have even doubled in two decades. The area where the high ozone concentrations have been measured is mostly downwind of Africa, and the researchers have calculated that biomass burning and especially increasing energy use on this continent have contributed substantially to emissions of nitrogen oxides, thus catalyzing ozone formation. The implication is that increasing energy use worldwide causes large-scale ozone increases, thus reducing global air quality.

###

Original work:

Jos Lelieveld, John van Aardenne, Horst Fischer, Marian de Reus, Jonathan Williams and Peter Winkler Increasing ozone over the Atlantic OceanScience Express, 13 May 2004


Story Source:

The above story is based on materials provided by Max Planck Society. Note: Materials may be edited for content and length.


Cite This Page:

Max Planck Society. "Increasing Ozone Over The Atlantic Ocean." ScienceDaily. ScienceDaily, 17 May 2004. <www.sciencedaily.com/releases/2004/05/040517072915.htm>.
Max Planck Society. (2004, May 17). Increasing Ozone Over The Atlantic Ocean. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2004/05/040517072915.htm
Max Planck Society. "Increasing Ozone Over The Atlantic Ocean." ScienceDaily. www.sciencedaily.com/releases/2004/05/040517072915.htm (accessed October 31, 2014).

Share This



More Earth & Climate News

Friday, October 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

How A Chorus Led Scientists To A New Frog Species

How A Chorus Led Scientists To A New Frog Species

Newsy (Oct. 30, 2014) — A frog noticed by a conservationist on New York's Staten Island has been confirmed as a new species after extensive study and genetic testing. Video provided by Newsy
Powered by NewsLook.com
Raw: Hawaii Lava Inches Closer

Raw: Hawaii Lava Inches Closer

AP (Oct. 30, 2014) — Aerial video shows the path lava has carved across a portion of Hawaii's big island, threatening homes in the town of Pahoa. Officials say the flow was just over 230 yards from a roadway Thursday morning. (Oct. 30) Video provided by AP
Powered by NewsLook.com
Raw: Hawaii Lava Approaching Village Road

Raw: Hawaii Lava Approaching Village Road

AP (Oct. 30, 2014) — The lava flow on the Big Island of Hawaii was 225 yards from Pahoa Village Road on Wednesday night. The lava is slowing down but still approaching the village. (Oct. 30) Video provided by AP
Powered by NewsLook.com
Endangered Carpathian Ponies Are Making a Comeback in Poland

Endangered Carpathian Ponies Are Making a Comeback in Poland

AFP (Oct. 29, 2014) — At the foot of the rugged Carpathian mountains near the Polish-Ukrainian border, ranchers and scientists are trying to protect the Carpathian pony, known as the Hucul in Polish. Duration: 02:17 Video provided by AFP
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