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Variations in mass of the PM 10,PM 2.5 and PM 1 during the monsoon and the winter at New Delhi

Tiwari, S and Chate, DM and Pragya, P and Ali, K and Bisht, DS (2012) Variations in mass of the PM 10,PM 2.5 and PM 1 during the monsoon and the winter at New Delhi. Aerosol and Air Quality Research, 12 (1). pp. 20-29.

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PM10, PM2.5 and PM1 mass concentrations have been measured at Delhi (28°35'N; 77°12'E) during the August to December 2007. The running mean of PM10, PM2.5 and PM1 data shows large variations. The PM10, PM2.5 and PM1 were ranged from 20 to 180 μg/m3 during the monsoon and from 100 to 500 μg/m3 during the winter (up to 1200 μg/m3 in November due to Deepavali fireworks). For the same running mean cycles, higher mass concentrations in the PM10, PM2.5 and PM1 were corresponded with peaks in the relative humidity and lower levels linked to peaks in the ambient temperature. The evolutions of PM10, PM2.5 and PM1 concentrations after the elapsed times are simulated with mean mass scavenging coefficients. These evolution patterns clearly show the difference in washout of PM10 with impaction scavenging relative to those for PM2.5 and PM1 particles over different rainfall durations. Air-mass pathways traced with HYSPLIT model over the study area illustrates the nature of PM10, PM2.5 and PM1 levels with monsoon and winter air-mass circulations over Delhi.

Item Type: Article
Additional Information: Copyright of this article belongs to Taiwan Association for Aerosol Research.
Uncontrolled Keywords: Air mass; HYSPLIT model; Mass concentration; Particulate Matter; Rainfall duration; Scavenging coefficients; Study areas; Time-series variations; Washout pattern, Particles (particulate matter); Visibility, Atmospheric thermodynamics, aerosol property; air mass; air sampling; concentration (composition); festival; monsoon; particulate matter; rainfall; relative humidity; scavenging (chemistry); time series analysis; visibility; winter, Delhi; India; New Delhi
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 21 Dec 2013 06:29
Last Modified: 21 Dec 2013 06:29

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