Journal ArticleDOI
Observational study of surface ozone at New Delhi, India
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TLDR
In this article, surface ozone has been measured over New Delhi, an urban site, a region of intensive anthropogenic activity since 1997, and the hourly averaged surface ozone data illustrates that on a large number of days the surface ozone values at Delhi exceed the World Health Organization (WHO) ambient air quality standards (hourly average of 80 ppb) for ozone.Abstract:
Surface ozone has been measured over New Delhi, an urban site, a region of intensive anthropogenic activity since 1997. Seasonal variations in ozone concentration show pronounced maxima in the summer and autumn seasons and minima in monsoon and winter seasons. Diurnal patterns in ozone concentration show daytime in situ photochemical production throughout the year. The high ozone episode days were associated with meteorological parameters such as sunny and warm weather, stagnant wind patterns and low relative humidity. The monthly average maximum concentration in summer was found to be in the range of 62–95 ppb whereas, it was found to be 50–82 ppb in the autumn (October and November). The analysis of hourly averaged surface ozone data illustrates that on a large number of days the surface ozone values at Delhi exceed the World Health Organization (WHO) ambient air quality standards (hourly average of 80 ppb) for ozone. On some occasions, night‐time increases of surface ozone concentration have been obser...read more
Citations
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The global impact of ozone on agricultural crop yields under current and future air quality legislation
TL;DR: In this paper, the authors evaluate the global impact of surface ozone on four types of agricultural crop using modelled global hourly ozone fields for the year 2000 and 2030, using the global 1 � � 1�
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Simulations over South Asia using the Weather Research and Forecasting model with Chemistry (WRF-Chem): chemistry evaluation and initial results
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New indices for wet scavenging of air pollutants (O3, CO, NO2, SO2, and PM10) by summertime rain
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TL;DR: In this article, the washout effect of summertime rain on surface air pollutants (O3, CO, NO2, SO2, and PM10) has been investigated over South Korea during 2002-2012 using routinely available air-monitored and meteorological data.
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Simultaneous measurements of ozone and its precursors on a diurnal scale at a semi urban site in India
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Diurnal and seasonal variability of surface ozone and NOx at a tropical coastal site: Association with mesoscale and synoptic meteorological conditions
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TL;DR: In this paper, the diurnal and seasonal patterns of ozone and its precursor, NOx, and also the interdependence of these two chemical species were investigated at the tropical coastal location of Trivandrum (8.55°N, 77°E).
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