NDLI: Analysis of major photochemical pollutants with meteorological factors for high ozone days in Istanbul, Turkey

Content Provider	Springer Nature Link
Author	İm, Ulaş Tayanç, Mete Yenigün, Orhan
Copyright Year	2006
Abstract	Hourly ozone, NO$_{ x }$ and VOC concentrations, measured during 2001–2003 summer periods, are analyzed in order to examine the interaction patterns between the major photochemical pollutants in İstanbul. 34 high ozone days throughout the summer periods of the three years are determined and examined in the study together with the meteorological parameters like temperature, wind and vertical structure of the atmosphere. The results show that high levels of ozone are observed mostly under anticyclonic conditions with relatively low wind speeds. High ozone days generally experienced maximum concentrations at afternoon hours and minimum concentrations are reached at rush hours due to NO$_{ x }$ – titration by traffic emissions. High negative correlations with NO$_{ x }$ up to -0.84 are observed at the Saraçhane station while higher correlations for VOC species, up to −0.75, are calculated for Kadiköy station. Some individual episodes experiencing high ozone concentrations up to 310 μg m$^{−3}$ in the early morning hours are also studied. It is found that decreasing inversion heights in the early hours of the day led to suppression of pollutants close to surface and thus, an increase in ozone concentrations was observed. Low wind speeds played a major role in the increase of pollution levels in the region. HYSPLIT model is applied to some particular episodes and the results show that the northeasterly transport to the region was dominant, especially in the early-morning maximums.
Starting Page	335
Ending Page	359
Page Count	25
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	175
Issue Number	1-4
e-ISSN	15732932
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-07-11
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	İstanbul Ozone episodes Interaction patterns HYSPLIT trajectory model Radiosonde data Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Terrestrial Pollution Atmospheric Protection/Air Quality Control/Air Pollution Environment Hydrogeology
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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Analysis of major photochemical pollutants with meteorological factors for high ozone days in Istanbul, Turkey

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Analysis of major photochemical pollutants with meteorological factors for high ozone days in Istanbul, Turkey