scholarly journals The Influence of Spatial Variability of Critical Conversion Point (CCP) in Production of Ground Level Ozone in the Context of Tropical Climate

2017 ◽  
Vol 16 (1) ◽  
pp. 153-165 ◽  
Author(s):  
Norrimi Rosaida Awang ◽  
Maher Elbayoumi ◽  
Nor Azam Ramli ◽  
Ahmad Shukri Yahaya
Keyword(s):  
Spatial Variability ◽  
Ground Level ◽  
Tropical Climate ◽  
Ground Level Ozone ◽  
Conversion Point ◽  
Critical Conversion

scholarly journals Time effects of high particulate events on the critical conversion point of ground-level ozone

2018 ◽  
Vol 187 ◽  
pp. 328-334 ◽  
Author(s):  
Norrimi Rosaida Awang ◽  
Nor Azam Ramli ◽  
Syabiha Shith ◽  
Noor Faizah Fitri Md Yusof ◽  
Nazatul Syadia Zainordin ◽  
...  
Keyword(s):  
Ground Level ◽  
Time Effects ◽  
Ground Level Ozone ◽  
Conversion Point ◽  
Critical Conversion

Multivariate methods to predict ground level ozone during daytime, nighttime, and critical conversion time in urban areas

2015 ◽  
Vol 6 (5) ◽  
pp. 726-734 ◽  
Author(s):  
Norrimi Rosaida Awang ◽  
Nor Azam Ramli ◽  
Ahmad Shukri Yahaya ◽  
Maher Elbayoumi
Keyword(s):  
Urban Areas ◽  
Ground Level ◽  
Multivariate Methods ◽  
Ground Level Ozone ◽  
Conversion Time ◽  
Critical Conversion

The study of ground-level ozone over Kyiv and its impact on public health

2011 ◽  
Vol 17 (1) ◽  
pp. 52-59
Author(s):  
A.V. Shavrina ◽  
◽  
I.A. Mikulskaya ◽  
S.I. Kiforenko ◽  
V.A. Sheminova ◽  
...  
Keyword(s):  
Public Health ◽  
Ground Level ◽  
Ground Level Ozone

Considerations on Ambient Levels of Ozone Concentrations and Relationship with NOx in an Urban Environment

2017 ◽  
Vol 68 (4) ◽  
pp. 824-829
Author(s):  
Cornel Ianache ◽  
Laurentiu Predescu ◽  
Mirela Predescu ◽  
Dumitru Dumitru
Keyword(s):  
Nitrogen Oxides ◽  
Urban Areas ◽  
Road Traffic ◽  
Temporal Distribution ◽  
Ground Level ◽  
Distinct Pattern ◽  
Weekend Effect ◽  
Monitoring Site ◽  
Ground Level Ozone ◽  
Ozone Concentrations

The serious air pollution problem has determined public concerns, worldwide. One of the main challenges for countries all over the world is caused by the elevated levels of ground-level ozone (O3) concentrations and its anthropogenic precursors. Ploiesti city, as one of the major urban area of Romania, is facing the same situation. This research aims to investigate spatial and temporal distribution characteristics of O3 in relationship with nitrogen oxides (NOx) using statistical analysis methods. Hourly O3 and NOx measurements were collected during 2014 year in Ploiesti. The results obtained showed that the ozone spatial distribution was non-normal for each month in 2014. The diurnal cycle of ground-level ozone concentrations showed a mid-day peak, while NOx diurnal variations presented 2 daily peaks, one in the morning (7:00 a.m.) and one in the afternoon (between 5:00 and 7:00 p.m.). In addition, it was observed a distinct pattern of weekly variations for O3 and NOx. Like in many other urban areas, the results indicated the presence of the �ozone weekend effect� in Ploiesti during the 2014 year, ozone concentrations being slightly higher on weekends compared to weekdays. For the same monitoring site, the nitrogen oxides were less prevalent on Saturdays and Sundays, probably due to reducing of road traffic and other pollution-generating activities on weekends than during the week.

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