Variability of surface ozone and other small atmospheric compounds in a megapolis and in a rural region

Zvyagintsev, A. M.; Kakadzhanova, G.; Tarasova, Oksana

doi:10.1134/s1024856010030097

Cited by 8 publications

(2 citation statements)

References 9 publications

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“…Figure 6 illustrating the monthly trends, it can be seen that the total ozone over Kathmandu decreases faster during November, December and January than that during other months. The monthly or seasonal variation of total ozone over Kathmandu is similar to those in other studies [21,22]. For instance, seasonal variation of total ozone over Tibet [15] varies between 273 DU and 315 DU with minimum in October and maximum in March.…”

Section: Resultssupporting

confidence: 85%

Variability of the atmospheric ozone over Kathmandu using ground-based measurements

Chapagain

2015

BIBECHANA

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Measurement of the atmospheric total ozone over Kathmandu (27.67°N, 85.29°E) was carried out with a Brewer Spectrophotometer from February 2001 through February 2002. The total ozone data obtained from Brewer instrument are analyzed to study the daily variations of total ozone over Kathmandu on different seasons. The results reveal that day-to-day variations of the total ozone over Kathmandu are seasonal dependent. Total ozone values are relatively high in summer and spring seasons (up to 327 DU) and low (~213 DU) during the winter season. The low ozone concentration would be due to chemical and dynamic destruction processes related to the low temperature and less active photochemical reaction as less intense solar radiations are received during winter season.BIBECHANA 13 (2016) 9-17

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Section: Resultssupporting

confidence: 85%

Variability of the atmospheric ozone over Kathmandu using ground-based measurements

Chapagain

2015

BIBECHANA

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“…It is also seen from Fig. 4 that the day time CO variation was the inverse of the ozone varia tion before July 26 (which is connected with daily vari ations in emissions and vertical CO distribution in the atmosphere) like in long term average data [20,22], but after July 26, the morning CO concentration max imum shifted toward noon, closer to the ozone maxi mum (the CO concentration maximum in the period of the heaviest smoke on August 6 and 7 was observed at about 13:00 Moscow summer time). The accumula tion of ozone precursors in daytime in the lower tropo sphere and, hence, photochemical processes of ozone generation, are prevented by vertical air mixing (due to convection), the intensity of which directly depends on the modulus of the temperature gradient.…”

Section: Observations Results and Discussionmentioning

confidence: 89%

Anomalies of trace gases in the air of the European part of Russia and Ukraine in summer 2010

Zvyagintsev

Blum²,

Glazkova

et al. 2011

Atmos Ocean Opt

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Time series of concentrations of some trace gases in the Moscow and Kirov Regions, Kyiv and the Crimea under conditions of the abnormally hot summer of 2010 have been analyzed. Concentrations of ozone, particulate matter (PM 10 ), carbon monoxide, and nitrogen oxides, almost continuously exceeded national standards of maximum permissible levels in July-August 2010 in the Moscow Region. The highest pollution was observed on August 2-11, when some heavy plumes of forest and peatbog fires covered the region, as in 2002.Concentrations of pollutants, first, ozone, exceeded the levels usually observed in Western Europe during periods of high photochemical air pollution. This air pollution event adversely affected human health, and finally resulted in an increase in mortality due to, first of all, increased PM 10 and ozone concen trations. Air quality in the Kirov Region, Kyiv, and the Crimea, not affected by the fire plumes, was quite sat isfactory despite weather conditions similar to those in Moscow.

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Air quality and CO emissions in the Moscow megacity

Elansky

2014

Urban Climate

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Variability of surface ozone and other small atmospheric compounds in a megapolis and in a rural region

Cited by 8 publications

References 9 publications

Variability of the atmospheric ozone over Kathmandu using ground-based measurements

Variability of the atmospheric ozone over Kathmandu using ground-based measurements

Anomalies of trace gases in the air of the European part of Russia and Ukraine in summer 2010

Air quality and CO emissions in the Moscow megacity

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