Navigation Links
Ground-level ozone falling faster than model predicted
Date:3/11/2013

stries in Eastern states. The dramatic reduction in emissions over the subsequent four years provided a real-world experiment for the researchers to test how well computer models predict improvements in air quality.

"We found that even when we tried to model things with the best available emissions and the best available meteorology, we still had a gap, especially in the Northeast states, that couldn't be explained," he said.

In the SIP Call regions, the researchers found the simulated drop in ozone was 4.6 ppb, while the observed drop was 8 ppb, a significant difference. Faster-than-expected reductions in NOx emissions may explain some but not all of that gap. The remaining gap may result from inaccuracies in how the model represents the chemistry and transport of air pollutants, Cohan said.

"How ozone responds to changes in NOx and hydrocarbons is a nonlinear chemistry," Cohan said. "So it's certainly possible that even the best models could be slightly inaccurate in defining those relationships. It tells us that, as modelers, we need to revisit the formulations, especially the chemistry."

While it may be preferable for models to be a bit conservative rather than too aggressive in predicting ozone improvements, Cohan said, the models are intended to represent air pollution as accurately as possible. A study by Cohan's research group last year showed that regulatory modeling by states tended to slightly under-predict the ozone reductions that were actually achieved.

"The goal of everyone in the process is to reach attainment in the most cost-effective manner possible, and we need accurate models to inform those decisions," Cohan said.


'/>"/>
Contact: David Ruth
david@rice.edu
713-348-6327
Rice University
Source:Eurekalert

0

GOOD

Page: 1 2

Related biology news :

1. Ozone treated water v. lethal microbial material
2. Houston Clean Air Network offering real-time online ozone report
3. Ozones impact on soybean yield: Reducing future losses
4. University of Illinois receives grant to study ozone resistance in corn
5. Ozone levels have sizeable impact on worker productivity
6. 2 climate scientists win 2012 Vetlesen Prize for work on ozone hole, ice cores
7. Oceans acidifying faster today than in past 300 million years
8. From scourge to saint: E. coli bacteria becomes a factory - to make cheaper, faster pharmaceuticals
9. Tiny electrical sensors could signal faster MRSA diagnosis
10. Athletic frogs have faster-changing genomes
11. What does a tree growing faster than its neighbor look like from outer space?
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/21/2013)... , May 21, 2013 Royal Philips Electronics ... the world,s first portable ultrasound with Philips, industry leading ... capability. The CX50 xMATRIX with available Live 3D TEE ... at the EuroPCR, official meeting for the ... Since its launch in 2012, Philips CX50 ...
(Date:5/20/2013)... also commonly resistant to antimicrobial substances made by ... mBio , the online open-access journal of ... and host antimicrobials LL-37 and lysozyme, which help ... that patients with life-threatening multi-drug resistant infections are ... is a last-line drug for treating several kinds ...
(Date:5/20/2013)... the effect of physical education (PE) on child weight, ... increasing the amount of time that elementary schoolchildren spent ... The study represents some of the first evidence of ... is forthcoming in the Journal of Health Economics ... can be viewed at: http://www.sciencedirect.com/science/article/pii/S0167629613000556 , The ...
Breaking Biology News(10 mins):Philips CX50 xMATRIX now offers world-class interventional and diagnostic features on single portable system 2Resistance to last-line antibiotic makes bacteria resistant to immune system 2Resistance to last-line antibiotic makes bacteria resistant to immune system 3Gym class reduces probability of obesity, study finds for first time 2
... planning of the preparatory activities for a new tentative ... satellite. On 7 September, preparatory activities for the ... Russia were stopped by Eurockot due to an anomaly ... and navigation subsystem of the launcher,s Upper Stage Breeze ...
... a highly selective behavior towards odor stimuli. A ... olfactory stimulus is often not sufficient for immediate ... Interestingly, the behavior differed between investigated D. ... mangos) were preferred by most flies, whereas artificial ...
... 1 OCTOBER 2008 Not only are more than ... Brown Convention Center, beginning this weekend, to participate in ... but they are bringing focus to issues of local ... theme of "Celebrating the International Year of Planet Earth," ...
Cached Biology News:What is wild? Odor attraction among different wildtype Drosophila 2What is wild? Odor attraction among different wildtype Drosophila 3Earth scientists keep an eye on Texas 2Earth scientists keep an eye on Texas 3Earth scientists keep an eye on Texas 4Earth scientists keep an eye on Texas 5
(Date:5/22/2013)... MA (PRWEB) May 22, 2013 Cambridge ... present at last week’s “Data Demonstration Day” on Capitol Hill, ... Semantics joined EMC, Google, Microsoft and others to showcase how ... proposed Digital Accountability and Transparency Act (DATA Act). , Originally ... Issa (R-CA) and Sen. Mark Warner ...
(Date:5/22/2013)... The Conference Forum announced ... Advance Clinical Trials conference taking place on September 19-20 ... , Disruptive thinkers from Novartis, Pfizer, Eli Lilly, ... approaches to reduce expensive infrastructure, engage patients and generate ... be big, or novel, or it must change the ...
(Date:5/22/2013)... YORK , May 22, 2013   ... the development of disease modifying therapeutics for Alzheimer,s ... the completion of its Series B financing, which ... and warrants that would represent approximately $2.8M in ... and new investors supported the raise. ...
(Date:5/22/2013)... May 22, 2013  Empire Genomics announced today ... patent pending novel genomic biomarker from Cornell University ... that could help in diagnosing and determining treatment ... Neuroendocrine prostate cancer (NEPC) is a ... arise de novo, but more commonly arises after ...
Breaking Biology Technology:Cambridge Semantics Underscores Need for Smart Data during “Data Demonstration Day” on Capitol Hill 2Disruptive Innovation Hits Clinical Trials, Dedicated Event Launches 2Oligomerix, Inc. Completes Series B Financing 2Oligomerix, Inc. Completes Series B Financing 3Empire Genomics Licenses Novel DNA Biomarker for Use in Diagnosing and Creating a Companion Diagnostic Test for Neuroendocrine Prostate Cancer 2
... Remedy Informatics, the leading provider of registries for Life ... Providence Health & Services, has selected Remedy,s Mosaic(TM) ... Telestroke Network to improve patient outcomes . ... excited to work with Providence, and to support their ...
... (NASDAQ: CPHD ) today announced that, together ... Jersey (UMDNJ), it has received a grant from the ... amplification methods for highly-sensitive detection of bloodstream bacteria using ... The $1.3 million grant is for the first year ...
... BOSTON, Massachusetts, March 20, 2012 Heptares ... an operating company of Shire PLC (LSE: SHP, NASDAQ: ... has exercised its exclusive option to license a novel ... is currently in preclinical development. Adenosine A 2A ...
Cached Biology Technology:Providence Health & Services Inks Deal with Remedy Informatics for Orthopedic and Stroke Registries 2Providence Health & Services Inks Deal with Remedy Informatics for Orthopedic and Stroke Registries 3Cepheid Receives Grant to Develop Sample Processing and Amplification Methods for Detection of Bloodstream Bacteria 2Cepheid Receives Grant to Develop Sample Processing and Amplification Methods for Detection of Bloodstream Bacteria 3Cepheid Receives Grant to Develop Sample Processing and Amplification Methods for Detection of Bloodstream Bacteria 4Heptares Grants Shire an Exclusive Worldwide Licence to Develop and Commercialise Novel Drug Candidate for CNS Disorders 2Heptares Grants Shire an Exclusive Worldwide Licence to Develop and Commercialise Novel Drug Candidate for CNS Disorders 3
...
Mouse monoclonal antibody to PDK2 - pyruvate dehydrogenase kinase, isoenzyme 2...
Mouse polyclonal antibody raised against a partial recombinant WRB. NCBI Entrez Gene ID = 7485...
Mouse monoclonal antibody raised against a partial recombinant PRG4. NCBI Entrez Gene ID = PRG4...
Biology Products: