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Long-Term Variations of Air Quality Influenced by Surface Ozone in a Coastal Site in India: Association with Synoptic Meteorological Conditions with Model Simulations

1
Department of Physics, Erode Arts and Science College, Erode, Tamil Nadu-638009, India
2
Department of Physics, Sree Krishna College Guruvayur, Kerala 680102, India
3
Department of Atomic and Molecular Physics, MAHE, Manipal, Karnataka 576104, India
4
Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA 70803, USA
*
Author to whom correspondence should be addressed.
Atmosphere 2020, 11(2), 193; https://doi.org/10.3390/atmos11020193
Received: 25 December 2019 / Revised: 7 February 2020 / Accepted: 7 February 2020 / Published: 12 February 2020
(This article belongs to the Special Issue 10th Anniversary of Atmosphere: Air Quality)
Atmospheric ozone (O3) in the surface level plays a central role in determining air quality and atmospheric oxidizing capacity. In this paper, we review our comprehensive results of simultaneous measurements of surface ozone (O3) and its precursor gas (NOx) and weather parameters that were carried out continuously for a span of six years (January 2013–December 2018) at a typical rural coastal site, Kannur (11.9ON, 75.4OE) in South India. Surface O3 concentration reached its maximum during daytime hours and minimum during the night time. The influence of solar radiation and water content on variations of O3 are discussed. A Multi-Layer Perceptron (MLP) artificial neural network technique has been used to understand the effect of atmospheric temperature on the increase in O3 over the past six years. This has been found that temperature has been a major contributor to the increase in O3 levels over the years. The National Centre for Atmospheric Research- Master Mechanism (NCAR-MM) Photochemical box model study was conducted to validate the variations of O3 in different seasons and years, and the results were shown to be in good agreement with observed trends.
Keywords: surface O3; precursor gases; Kannur; model simulation surface O3; precursor gases; Kannur; model simulation
MDPI and ACS Style

CT, R.; T, N.; MK, S.K.; M, B.; KT, V. Long-Term Variations of Air Quality Influenced by Surface Ozone in a Coastal Site in India: Association with Synoptic Meteorological Conditions with Model Simulations. Atmosphere 2020, 11, 193.

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