Featured Research

from universities, journals, and other organizations

Air quality has continued to improve in Finnish Lapland

Date:
September 21, 2011
Source:
Finnish Meteorological Institute
Summary:
Long-term observations indicate a positive trend in the quality of air in Lapland during the past 10-20 years. This favorable trend may be threatened by increased marine transport emissions from the Arctic Ocean, which may remain free of ice owing to climate change.

Trends in the concentrations of nearly sixty atmospheric pollutants have been studied using the data collected in Finland at the Pallas-Sodankylδ Observatory from 1996 to 2009. Concentrations of pollutants in Lapland are very low, typically about one tenth of the background concentrations in Southern Finland. Many of the concentrations studied remained unchanged over the long term and nearly half showed a decreasing trend.

Related Articles


Lower concentrations were measured for many pollutants hazardous to ecosystems and humans, such as sulphur dioxide, heavy metals and some polyaromatic hydrocarbons transported from the Kola Peninsula. Long-range transports of sulphates and stable organic compounds have also been decreasing in Pallas. With respect to pollutants from transport (nitrogen compounds, volatile hydrocarbons and ozone), however, the situation remained more or less unchanged.

Climate change affects the dispersion of pollutants

Using results from nine climate models, the project assessed how the transport of pollutants might evolve in the future. It is predicted that, with global warming, southwestern and western winds will become more common, while eastern winds will become rarer. In consequence, concentrations of pollutants carried by southwestern air currents will rise in Lapland. This group includes, for instance, nitrogen dioxide from transport. On the other hand, less pollution, such as sulphur dioxide and black carbon, will reach Lapland from the east. However, according to forecasts obtained with climate models, the changes in wind directions are so slight that the resulting changes in concentrations will be at most a couple of per cent by the year 2100.

Indirect impacts the most important

In consequence of climate change, the pollution loads in northern regions may increase because of growing emissions. By 2050, the Arctic Ocean may be totally free of ice in summer. Should this be the case, increasing ship traffic may cause pollution levels in Lapland to rise as well. The global efforts currently in progress to limit sulphur emissions from marine transport will probably prevent sulphur emissions from rising, but in the worst of cases the concentrations of nitrogen oxides and particles may double from the present level.

Research findings will be presented to the authorities at a seminar to be held in Muonio on 21 and 22 September. The study is a part of the project "Vulnerability Assessment of Ecosystem Services for Climate Change Impacts and Adaptation (VACCIA)" coordinated by the Finnish Environment Institute.


Story Source:

The above story is based on materials provided by Finnish Meteorological Institute. Note: Materials may be edited for content and length.


Cite This Page:

Finnish Meteorological Institute. "Air quality has continued to improve in Finnish Lapland." ScienceDaily. ScienceDaily, 21 September 2011. <www.sciencedaily.com/releases/2011/09/110921115913.htm>.
Finnish Meteorological Institute. (2011, September 21). Air quality has continued to improve in Finnish Lapland. ScienceDaily. Retrieved October 30, 2014 from www.sciencedaily.com/releases/2011/09/110921115913.htm
Finnish Meteorological Institute. "Air quality has continued to improve in Finnish Lapland." ScienceDaily. www.sciencedaily.com/releases/2011/09/110921115913.htm (accessed October 30, 2014).

Share This



More Earth & Climate News

Thursday, October 30, 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 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
Deadly Mudslide in Sri Lanka Buries Houses

Deadly Mudslide in Sri Lanka Buries Houses

AP (Oct. 29, 2014) — A mudslide triggered by monsoon rains buried scores of workers' houses at a tea plantation in central Sri Lanka on Wednesday, killing at least 10 people and leaving more than 250 missing, an official said. (Oct. 29) Video provided by AP
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