S. L. Jain

TL;DR: 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.

TL;DR: The ozone levels clearly exhibit a diurnal cycle, similar to what has been found in other urban places as discussed by the authors, where a sharp increase in the ozone levels during forenoon and a sharp decrease in the early afternoon can be observed.

TL;DR: In this article, the temporal and spatial variability of 365 days; hourly mean surface ozone data for three different locations, New Delhi (a site of intense anthropogenic activity), Syowa and McMurdo stations in Antarctica (sites of clean background air).

TL;DR: In this article, the seasonal variation in tropospheric ozone has been observed to be comparatively larger over the western part of the IG region (∼22 DU) than over the central and eastern parts of the region.

TL;DR: In this article, satellite-borne ozone measurements obtained from the tropospheric ozone residual (TOR) method, CO from the MOPITT (at 850 hPa level) measurements and NO2 from the SCIAMACHY measurements for the three-year period 2003-2005 have been utilized to examine the distribution of the pollutant sources and long-range transport on a global scale.