Atmospheric pollution in a semi-urban, coastal region in India following festival seasons

Nishanth, T.; Praseed, K. M.; Rathnakaran, K.; Kumar, M. K. Satheesh; Krishna, R. Ravi; Valsaraj, Kalliat T.

doi:10.1016/j.atmosenv.2011.10.062

Cited by 65 publications

(22 citation statements)

References 35 publications

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“…Earlier, using this observational setup we studied the influence of solar eclipse on surface ozone (Nishanth et al, 2011) and air pollution due to fire cracking episode following festivals (Nishanth et al, 2012a) over this location and the results were quite promising. O 3 present in the ambient air is measured by the analyzer (O 342 M), which is working on the principle of strong absorption of UV radiation at 253.7 nm by O 3 molecules.…”

Section: Measurement Techniquesmentioning

confidence: 99%

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

Nishanth

2014

Aerosol Air Qual. Res.

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This paper presents the results of measurements of the surface ozone (O 3 ), oxides of nitrogen (NO x ), methane (CH 4 ) and total non-methane hydrocarbons (TNMHCs) in a rural coastal location at Kannur (11.9°N, 75.4°E, 5 m asl), India from November 2009 to December 2011. The diurnal cycle for surface O 3 had a peak in the afternoon and declined during nighttime. The maximum and minimum mixing ratio of surface O 3 was observed in winter and monsoon seasons respectively. NO x concentration was high during mid-night to early morning and low during noontime. The diurnal variations of mixing ratios for NO x and O 3 were anti-correlated. Monthly average maximum (2.26 ± 0.44 ppmv) and minimum (0.43 ± 0.19 ppmv) CH 4 concentrations were observed in December and August respectively. The diurnal variations of CH 4 were similar to that of NO x . A CH 4 buildup was observed during early morning hours throughout the observational period. On an annual basis, the maximum, minimum and average total NMHCs were (25.45 ± 6.58 ppbv), (13.84 ± 4.31 ppbv), and (19.23 ± 5.56 ppbv) respectively at the observational site. Analysis of O 3 , NO, NO 2 , CH 4 and NMHC have been carried out and the correlation between O 3 and its precursors is discussed detailed. Further, the diurnal variation of O 3 over a free tropospheric region at Ooty, a hill station lying in the Western Ghats region of south India on clear sky days in February 2011 is also reported for a comparison.

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Section: Measurement Techniquesmentioning

confidence: 99%

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

Nishanth

2014

Aerosol Air Qual. Res.

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“…However, organic emission from fireworks is reported to be less when compared with other chemical species (Drewnick et al, 2006;Sarkar et al, 2010;Chang et al, 2011). Nishanth et al (2012) reported increase of PM 10 , O 3 , NO 2 , NO along with various hazardous organics in the atmosphere which are released from burning of firecrackers during traditional Vishu festival of Kerala, India. There are also studies on effects of Diwali celebrations on high ground or surface ozone concentration (Attri et al, 2001;Ganguli, 2009).…”

Section: Introductionmentioning

confidence: 99%

Diwali Fireworks: Early Signs of Impact on PM10 Properties of Rural Brahmaputra Valley

Deka

Hoque

2014

Aerosol Air Qual. Res.

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The festival of Diwali and it associated fireworks, which were not so common in the past, are slowly penetrating into rural Brahmaputra Valley. PM 10 monitoring was done during the 2009 Diwali festivities at a rural site in the Brahamputra Valley of Northeast India. Sampling of PM 10 was done on a 12 hourly basis for an extended period of 13 consecutive days. The mean PM 10 concentration during the monitoring campaign was found to be 40.88 ± 19 µg/m 3 and the maximum concentration of PM 10 was recorded on the Pre-Diwali night. Elemental and ionic constituents of PM 10 were analyzed by ICP-OES and Ion Chromatograph (IC), respectively. The ratio of ∑anions to ∑cations was found to be 1.26 for the study period, which is indicative of a cation deficient condition. Pearson's correlation and Principal Component Analysis (PCA) were carried out to trace the impact of Diwali celebrations. In addition, the elemental enrichments due to Diwali fireworks, which we term Diwali Induced Enrichments (DIE) were calculated for the festival day samples. DIE showed marginal enrichment of elements and ions, indicating the beginning of the impact of Diwali in the rural areas of the region.

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“…In addition, a large amount of data and research results show that the changes in China's average temperature over the past 100 years are very similar to the changes in the global average temperature [2][3][4], especially since the warming that began in 1970, the increase is higher than the global average warming level [5]. At the same time, this climate change is uneven [6], with obvious regional differences, the influence of the climate system, the weather and climate are extremely complex, and the temperature variability is high [7][8][9][10].…”

Section: Introductionmentioning

confidence: 65%

Temperature trends and characteristics during 1957-2016 over Hangzhou, China

Chen

Hui

Chen

et al. 2018

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. This research analysed the temperature trend and characteristics of Hangzhou, China, during 1957-2016. For residents to choose the best travel time and improve the quality of their life. The results show that the average value of temperature during 1957-2016 is 16.90 °C with the trend of 0.33 °C per decade. For seasonal change, highest temperature occurs in the summer, the lowest value appears in the winter, further observation shows that temperature in July and August shows the maximum value, and in December, January and February shows the lowest value. The value of temperature about worst 20%, 50% and best 20% is in an upward trend.

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Atmospheric pollution in a semi-urban, coastal region in India following festival seasons

Cited by 65 publications

References 35 publications

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

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

Diwali Fireworks: Early Signs of Impact on PM10 Properties of Rural Brahmaputra Valley

Temperature trends and characteristics during 1957-2016 over Hangzhou, China

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