scholarly journals Air quality study for Montenegro Pljevlja area

2013 ◽  
Author(s):  
C. Trozzi ◽  
S. Villa ◽  
J. Knezević ◽  
C. Leonardi ◽  
A. Pejović ◽  
...  
Keyword(s):  
Air Quality ◽  
Quality Study

Introduction to the special issue on Pacific 2001 Air Quality Study

2004 ◽  
Vol 38 (34) ◽  
pp. 5717 ◽  
Author(s):  
Bruce Thomson ◽  
Shao-Meng Li ◽  
Wayne Belzer
Keyword(s):  
Air Quality ◽  
Special Issue ◽  
Quality Study

scholarly journals Modeling nitrous acid and its impact on ozone and hydroxyl radical during the Texas Air Quality Study 2006

2012 ◽  
Vol 12 (2) ◽  
pp. 5851-5880 ◽  
Author(s):  
B. H. Czader ◽  
B. Rappenglück ◽  
P. Percell ◽  
D. W. Byun ◽  
F. Ngan ◽  
...  
Keyword(s):  
Air Quality ◽  
Hydroxyl Radical ◽  
Gas Phase ◽  
Nitrous Acid ◽  
Organic Materials ◽  
Optical Absorption Spectroscopy ◽  
Ozone Formation ◽  
Mixing Ratios ◽  
Quality Study ◽  
Mist Chamber

Abstract. Nitrous acid (HONO) mixing ratios for the Houston metropolitan area were simulated with the Community Multiscale Air Quality (CMAQ) model for an episode during the Texas Air Quality Study (TexAQS) II in August/September 2006 and compared to in-situ MC/IC (mist-chamber/ion chromatograph) and long path DOAS (Differential Optical Absorption Spectroscopy) measurements at three different altitudes. Several HONO sources were accounted for in simulations, such as gas phase formation, direct emissions, nitrogen dioxide (NO2*) hydrolysis, photo-induced formation from excited NO2* and photo-induced conversion of NO2 into HONO on surfaces covered with organic materials. Compared to the gas-phase HONO formation there was about a tenfold increase in HONO mixing ratios when additional HONO sources were taken into account, which improved the correlation between modeled and measured values. Concentrations of HONO simulated with only gas phase chemistry did not change with altitude, while measured HONO concentrations decrease with height. A trend of decreasing HONO concentration with altitude was well captured with CMAQ predicted concentrations when heterogeneous chemistry and photolytic sources of HONO were taken into account. Heterogeneous HONO production mainly accelerated morning ozone formation, albeit slightly. Also HONO formation from excited NO2 only slightly affected HONO and ozone (O3) concentrations. Photo-induced conversion of NO2 into HONO on surfaces covered with organic materials turned out to be a strong source of daytime HONO. Since HONO immediately photo-dissociates during daytime its ambient mixing ratios were only marginally altered (up to 0.5 ppbv), but significant increase in the hydroxyl radical (OH) and ozone concentration was obtained. In contrast to heterogeneous HONO formation that mainly accelerated morning ozone formation, inclusion of photo-induced surface chemistry influenced ozone throughout the day.

AN INDOOR AIR QUALITY STUDY OF AN ALLIGATOR (ALLIGATOR MISSISSIPPIENSIS) HOLDING FACILITY

2006 ◽  
Vol 37 (2) ◽  
pp. 108-115
Author(s):  
S. C. Wilson ◽  
H. W. Holder ◽  
J. M. Martin ◽  
T. L. Brasel ◽  
L. A. Andriychuk ◽  
...  
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Alligator Mississippiensis ◽  
Quality Study

Case Study: Multipollutant Indoor Air Quality Study of 300 Homes in Kingston/Harriman, Tennessee

2008 ◽  
pp. 129-129-19 ◽  
Author(s):  
AR Hawthorne ◽  
CS Dudney ◽  
RL Tyndall ◽  
T Vo-Dinh ◽  
MA Cohen ◽  
...  
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Quality Study

Long-term air quality study by DOAS within Beijing

2010 ◽  
Author(s):  
Klaus Schäfer ◽  
Yuesi Wang ◽  
Jinyuan Xin ◽  
Hong Ling ◽  
Peter Suppan
Keyword(s):  
Air Quality ◽  
Quality Study

scholarly journals Airborne cloud condensation nuclei measurements during the 2006 Texas Air Quality Study

2011 ◽  
Vol 116 (D11) ◽  
Author(s):  
Akua Asa-Awuku ◽  
Richard H. Moore ◽  
Athanasios Nenes ◽  
Roya Bahreini ◽  
John S. Holloway ◽  
...  
Keyword(s):  
Air Quality ◽  
Cloud Condensation Nuclei ◽  
Condensation Nuclei ◽  
Quality Study

scholarly journals Shipboard multisensor merged wind profiles from the New England Air Quality Study 2004

2007 ◽  
Vol 112 (D10) ◽  
Author(s):  
D. E. Wolfe ◽  
W. A. Brewer ◽  
S. C. Tucker ◽  
A. B. White ◽  
D. E. White ◽  
...  
Keyword(s):  
Air Quality ◽  
New England ◽  
Quality Study ◽  
Wind Profiles

scholarly journals Deciphering the Role of Radical Precursors during the Second Texas Air Quality Study

2009 ◽  
Vol 59 (11) ◽  
pp. 1258-1277 ◽  
Author(s):  
Eduardo P. Olaguer ◽  
Bernhard Rappenglück ◽  
Barry Lefer ◽  
Jochen Stutz ◽  
Jack Dibb ◽  
...  
Keyword(s):  
Air Quality ◽  
Quality Study
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