Delhi Metro Rail Corporation’s Communication with the Media

Sharma, Meenaxi

doi:10.4135/9781473989085

Cited by 1 publication

(1 citation statement)

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“…The most common indicators of air quality are particulate matter (PM) [7], and gases SO 2 [8], NO 2 [9] and O 3 [7]. Public transportation generates pollutants that have harmful effects on health and the environment [10], [11] Natural photochemical reaction [12], volcanic eruptions [13] and forest fires [14], and anthropogenic (http://www.who.int/airpollution/ambient/pollutants/en/) sources are responsible for air pollution. According to the WHO in 2012, 7 million people died due to air pollution [15], [16]; (http://www.who.int/sustainable-development/cities/en/).…”

Section: Introductionmentioning

confidence: 99%

Behavior of the Average Concentrations As Well As Their PM10 and PM2.5 Variability in the Metropolitan Area of Lima, Peru: Case Study February and July 2016

Reátegui-Romero¹,

Alvarez²,

Pacsi-Valdivia³

et al. 2021

IJESD

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This research focused on analyzing the behavior of the hourly average concentrations of PM10 and PM2.5 in relation to vehicular traffic, as well as the effect of relative humidity on these concentrations. Measurements of hourly particulate matter concentrations were recorded by the National Meteorology and Hydrology Service of Peru (SENAMHI) at five surface air quality stations. The profiles of PM10 concentrations are related to traffic behavior, showing high levels of concentrations at peak hours, while the PM2.5 profiles are flatter and better related to traffic in February (summer). The decrease in relative humidity between 80 to 65% in the mornings has a greater effect on the increase in PM10 and PM2.5 concentrations in February than in July (winter), and the increase in relative humidity between 65 to 80 % in the afternoon, it has a greater effect on the decrease in the concentration of PM2.5 in February than in July. The air quality in the north (PPD and CRB stations) and east (SJL station) of the Metropolitan Area of Lima (MAL) are the most polluted. The factors that relate PM10 concentrations with the Peruvian standard in February at these stations were 2.79, 1.78 and 1.26, and in July 2.74, 1.28 and 1.36 respectively. The highest and lowest variability of PM10 and PM2.5 in February and July occurred in the northern area (PPD and SMP stations).

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Section: Introductionmentioning

confidence: 99%