Navigation Links
Air pollution diminishing air quality at Devils Postpile National Monument
Date:4/23/2013

RIVERSIDE, Calif.Air pollution from wildland fires and urban and agricultural areas in California is diminishing air quality at Devils Postpile National Monument, according to a recent study published in the journal Atmospheric Environment.

Dr. Andrzej Bytnerowicz, a research ecologist from the U.S. Forest Service's Pacific Southwest Research Station, and a team of scientists measured air quality at Devils Postpile National Monument in the eastern Sierra Nevada and found occasionally high concentrations of ozone caused by wildland fires and air pollution from the California Central Valley and the San Francisco Bay Area. Ozone air pollution was measured at the Devils Postpile during the 2007 (low-fire) and 2008 (high-fire) summer seasons.

Key findings include:

  • Higher ozone peak concentrations in the high-fire year were attributed to emissions of ozone precursors (nitrogen oxides and volatile organic compounds) from wildland fires upwind of Devils Postpile in addition to polluted air traveling from the California Central Valley and the San Francisco Bay Area.

  • The highest ozone levels occurred when air masses swept through the San Francisco Bay Area and the California Central Valley in a northwest to southeasterly direction before reaching Devils Postpile at low altitudes. Both local generation of ozone and long-range transport of polluted air from the Central Valley occasionally caused increased air pollution at Devils Postpile.

  • The lowest ozone pollution occurred when air masses traveling over the Pacific Ocean passed from west to east at high altitudes, sweeping above the polluted air masses of the Central Valley.

  • Ozone concentrations exceeded the California air quality standards during the two study years, which may have contributed to the exceedance of federal standards (which are calculated for three-year periods). These levels pose a risk to sensitive individuals and indicate a need for long-term ozone monitoring.

  • Although ozone concentrations at Devils Postpile were generally lower than in other areas of the Sierra Nevada, there was a potential for modest phytotoxic effects on sensitive plants. Therefore, direct observations of potential impacts on plants are recommended.

"These findings are important for Sierra Nevada air and land managers and indicate that even at remote eastern Sierra locations, ozone air pollution may be a problem for human and ecosystem health," says Dr. Bytnerowicz, the study's lead author. "Due to these potential risks, there is a need for long-term ozone monitoring in the Sierra Nevada in general, but especially in the areas with high local population and many summer recreational visitors."

There is also a need for evaluation of ozone effects on forest health since this pollutant may weaken trees, making them more sensitive to drought and bark beetle attacks, and consequently resulting in premature death and higher susceptibility to wildland fires, Bytnerowicz notes.


'/>"/>

Contact: Sherri Eng
sleng@fs.fed.us
510-559-6327
USDA Forest Service - Pacific Southwest Research Station
Source:Eurekalert

Related biology news :

1. Long-term exposure to fine particles of traffic pollution increases risk of heart disease
2. Same-day water pollution test could keep beaches open more often
3. Deadly effects of certain kinds of household air pollution lead to call for biomarker studies
4. Notre Dame researcher is studying role small dams play in pollution control
5. Stanford scientists help shed light on key component of Chinas pollution problem
6. The role of goop: Research shows pollution doesnt change the rate of droplet formation
7. Nitrogen from pollution, natural sources causes growth of toxic algae, study finds
8. CU-led study shows pine beetle outbreak buffers watersheds from nitrate pollution
9. Small, portable sensors allow users to monitor exposure to pollution on their smart phones
10. Declining air pollution levels continue to improve life expectancy in US
11. Tracking pollution from outer space
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/5/2016)... Dec. 5, 2016  The Office of Justice ... "Can CT Scans Enhance or Replace Medico Legal ... of supporting or replacing forensic autopsies with postmortem ... In response to recommendations made by ... using CT scans as a potential component of ...
(Date:11/30/2016)...  higi SH llc (higi) announced today the ... brands, industry thought-leaders and celebrity influencers looking to ... taking steps to live healthier, more active lives. ... has built the largest self-screening health station network ... who have conducted over 185 million biometric screenings.  ...
(Date:11/28/2016)... 2016 "The biometric system ... The biometric system market is in the growth ... near future. The biometric system market is expected to ... a CAGR of 16.79% between 2016 and 2022. Government ... technology in smartphones, rising use of biometric technology in ...
Breaking Biology News(10 mins):
(Date:12/7/2016)... 7, 2016  Genprex, Inc. a biopharmaceutical company ... treatments, today announced that it has retained ICR ... strategic communications and advisory firm, to develop and ... will combine investor relations, public relations and digital ... profile of Genprex and its lead candidate Oncoprex, ...
(Date:12/7/2016)... DIEGO , December 7, 2016 ... in the International Journal of Molecular Sciences a team of ... 1 ] have demonstrated that expression of NR2F6 ...  These scientists tested for NR2F6 in patient,s cervical cancer tissue ... their tumors. "This is an interesting study and ...
(Date:12/7/2016)... ... December 07, 2016 , ... JULABO USA is ... cart. The new website has been designed to provide the best user-friendly experience ... to access detailed product information, read educational industry content as well as share ...
(Date:12/6/2016)... , Dec. 6, 2016 The American Botanical ... adoption of arnica ( Arnica montana ) through ... ABC,s HerbMedPro database, a comprehensive, interactive ... and clinical research data on the uses and ... Naturopathica, a wellness company with healing ...
Breaking Biology Technology: