Navigation Links
Ozone levels tend to be above recommended levels at this time of year in South West Spain

Surface ozone levels in the south west of the Iberian Peninsula usually exceed the protection threshold established by EU regulations for people and plants in spring and summer, according to data gathered between 2000 and 2005 by four measuring stations in Huelva, one of them next to the Doana National Park.

The limits established to protect human and plant health by the European Directive on ozone are usually exceeded from April onwards, especially during the summer, in the south west of the Iberian Peninsula, according to a study carried out by researchers at the National Institute of Aerospace Technology (INTA) and the University of Huelva (UHU).

Understanding this situation, which is common in many developed countries, will help public authorities to take measures to prevent health and environmental risks associated with increased levels of this contaminant gas.

The new study, published in the journal Environmental Science and Pollution Research, shows the levels of seasonal surface ozone variation measurements between 2000 and 2005 for the first time at the stations in the autonomous region of Huelva in El Arenosillo (very close to the Doana National Park), Cartaya, Valverde and Huelva city.

The threshold established for human health by the European Directive is exceeded during the spring and summer months, particularly at El Arenosillo and Valverde. The level for plant protection is also exceeded at a rate ranging from 131 days per year at Cartaya to 266 at Valverde, on average.

The scientists identified "a clear daily cycle", with minimum levels recorded at about 7am, shortly after dawn, while the highest levels were recorded at about 3pm. Average concentrations varied from 57.8 micrograms/m3 at the station in Huelva to 78.5 micrograms/m3 in Valverde.

The journey of ozone

Surface or tropospheric ozone (as distinct from the stratospheric ozone of the ozone layer) is considered one of the greatest atmospheric pollutants in rural, suburban and industrial areas, as its oxidising effect impacts on human health, vegetation and ecosystems. It is also a greenhouse gas, contributing to climate change. This ozone stems from photochemical reactions between nitrogen oxides and volatile organic compounds, which may be natural or manmade in origin.

The new study explains that the daily movements of coastal breezes move polluting emissions from the urban and industrial zone of Huelva inland from the south east. This means certain leeward areas, in the north east, are affected by high ozone levels, which is what happens in Valverde.

The authors stress that their work is "a very useful tool that will help environmental policy makers in taking decisions and devising strategies to reduce ozone, and will also open up new areas of research about the behaviour of this gas".


Contact: SINC
FECYT - Spanish Foundation for Science and Technology

Related biology news :

1. Skin oil -- ozone interactions worsen air quality in airplanes
2. NASA keeps eye on ozone layer amid Montreal Protocols success
3. 2007 ozone hole smaller than usual
4. MIT: Human-generated ozone will damage crops
5. Ozone intrusions -- humankinds fault?
6. Ozone can affect heavier people more
7. Gene that controls ozone resistance of plants could lead to drought-resistant crops
8. Regional nuclear conflict would create near-global ozone hole, says CU-Boulder study
9. Ozone hole recovery may reshape southern hemisphere climate change
10. Alternatives to ozone-depleting pesticide studied
11. Wildfires cause ozone pollution to violate health standards, new study shows
Post Your Comments:
(Date:11/17/2015)... , Nov. 17, 2015  Vigilant Solutions announces ... joined its Board of Directors. --> ... after recently retiring from the partnership at TPG Capital, ... companies with over $140 Billion in revenue.  He founded ... across all the TPG companies, from 1997 to 2013.  ...
(Date:11/16/2015)... SAN JOSE, Calif. , Nov 16, 2015 ... leading developer of human interface solutions, today announced ... new Synaptics TouchView ™ touch controller and ... the architectural revolution of smartphones. These new TDDI ... and include TD4100 (HD resolution), TD4302 (WQHD resolution), ...
(Date:11/12/2015)... 12, 2015  Arxspan has entered into an ... Harvard for use of its ArxLab cloud-based suite ... The partnership will support the institute,s efforts to ... research information internally and with external collaborators. The ... managing the Institute,s electronic laboratory notebook, compound and ...
Breaking Biology News(10 mins):
(Date:11/25/2015)... and HOLLISTON, Mass. , ... Inc. (Nasdaq: HART ), a biotechnology company developing ... CEO Jim McGorry will present at the ... 1, 2015 at 2:30 p.m. PT. The presentation will ... for 30 days. Management will also be available at ...
(Date:11/25/2015)... The Global Genomics Industry ... and in-depth study on the current state of ... ) , The report provides ... classifications, applications and industry chain structure. The Genomics ... including development trends, competitive landscape analysis, and key ...
(Date:11/24/2015)... 2015 Halozyme Therapeutics, Inc. (NASDAQ: HALO ) will ... New York on Wednesday, December 2 at 9:30 a.m. ... and CEO, will provide a corporate overview. th ... at 1:00 p.m. ET/10:00 a.m. PT . Jim Mazzola ... a corporate overview. --> th Annual Oppenheimer Healthcare ...
(Date:11/24/2015)... RALEIGH, N.C. , Nov. 24, 2015  Clintrax Global, Inc., ... Raleigh, North Carolina , today announced that the company has ... earnings represented a 391% quarter on quarter growth posted for Q3 ... Kingdom and Mexico , with the ... place in December 2015. --> United Kingdom ...
Breaking Biology Technology: