Surface ozone concentration and its behaviour with aerosols in the northwestern Himalaya, India

Observations of ambient trace gas and PM 10 concentrations at Patna, Central Ganga Basin during 2013–2014: The influence of meteorological variables on atmospheric pollutants

“…The absence of photochemistry together with reactions with olefins, NOx titration, and insitu destruction of ozone by surface deposition in the shallow nocturnal boundary layer keeps the concentrations low until sunrise the next day (Seinfeld and Pandis, 1998;Mahalakshmi et al, 2011). This diurnal pattern is similar to that found in other urban sites in India Sharma et al, 2013;Bhuyan et al, 2014;references therein). A recent study assessing the effects of biomass, stubble, and agriculture burning pollution in South Asia which showed it contributed~25-60% of emissions of gases as CO and NO 2 .…”

“…Hassan et al (2013) suggested that the level of O 3 in the troposphere is affected by the regional as well as local meteorology, emissions from various sources, chemical conditions, and topographic factors. It is a primary precursor of highly reactive hydroxyl (OH) radicals and plays a vital role in controlling the oxidizing capacity of the atmosphere (Sharma et al, 2013). The precursors of O 3 can be transported over long distances from source regions, strongly influenced by meteorological processes (Brankov et al, 2003).…”

Characteristics of ambient volatile organic compounds and the influence of biomass burning at a rural site in Northern China during summer 2013

“…The emitted active trace gases from biomass burning (VOCs and NOx) could pose a threat to human and ecosystem health (Bo et al, 2008). Furthermore, severe air pollution events have also frequently occurred in rural areas (Tanimoto, 2009;Sharma et al, 2013), especially in the downwind of urban areas receive air masses containing anthropogenic emissions (Wang et al, 2012b). Thus, the study of VOCs in the rural regions is very important to reduce VOC pollution in China.…”

Observational Study of Surface O3, NOx, CH4 and Total NMHCs at Kannur, India

“…In the Indian sub-continent, various groups have carried out long-term measurements of surface O 3 and precursors (Ghude et al, 2008;Kumar et al, 2010;Reddy et al, 2010;Singla et al, 2011;Mahapatra et al, 2012;Ojha et al, 2012;Sharma et al, 2013;Swamy et al, 2013) and the results were quite promising. Available observations and modeling studies in India show higher O 3 levels during winter and summer seasons extending until May.…”