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Impact Of Vardah Cyclone In Air Quality in Chennai

Joel, Deepak & Raj
UG Student
Department of civil Engineering
Loyola Institute of Technology, Palanchoor
Chennai, India.


Mr. Arunprasanth
Assistant Professor
Department of civil Engineering
Loyola Institute of Technology, Palanchoor
Chennai, India.

This project deals with the statistical investigation of air quality and climatic change in chennai. The analysis ofambient air quality in chennai city employing Air Quality Index (AQI). An Air Quality Index has been proposed for the city of chennai for pubic information and data interpretation. The average concentration for four major parameters are taken into account (SO2,No,Co,PM2.5) for the year 2016-2017(present day) for specified location in chennai city is taken . The place is Alandur which is an industrialist area. The AQI is calculated using AQI procedure. It has been observed that the air quality before varadha cyclone is in satisfactory zone, whereas now, it has reached moderately polluted condition. The climatic change also varies from the past year to the present.

Keywords: Air Pollution, Air Quality Index, Particulate Matter CO& PM2.5, SO2.

In India the ambient atmospheric conditions have progressively deteriorated due to urbanization, industrial development, lack of awareness, poor maintenance of motor vehicles and poor road conditions .Transport vehicles and industrial emissions are the major sources of pollutants in the chennai atmosphere. So, there is need to evaluate the air quality improvement in Chennai.). Among the various air pollutants from various sources particulate matter, sulphur dioxide and oxides of nitrogen are having a significant role in effecting the air quality and thereby causing harm to human health. Hence these parameters were considered to determine the air quality of Chennai. In this paper an attempt was made to study the air quality status of chennai, using AQI (Air Quality Index).


AQI is a tool, introduced by Environmental Protection agency (EPA) in USA to measure the levels of pollution due to major air pollutants. An AQI is defined as an overall scheme that transforms weighted values of individual air pollution related parameters into a single number or set of numbers (Mukesh Sharma, 2003). In the present study the AQI was calculated using IND-AQI specified by CPCB. The index has been developed based on the dose-response relationship of various pollutants. AQI concept transforms weighted values of individual air pollutants into a single number or set of numbers which may be widely used for air quality communication and decision making. This IND-AQI has 6 categories.

Table-1 Air Quality Index

category Range
Good 0 – 50
Satisfactory 51 – 100
Moderately Polluted 101 – 200
Poor 201 – 300
Very poor 301 – 400
Severe 401 – 500

In this project we used materials of air quality data from the Tamil Nadu pollution control board TNPCB.And worked out the comparison method of comparing annual air quality report in certain pollutant and Charted in pie graph for 2016 and Jan, Feb month of 2017 in the Chennai city.


The daily average concentrations were calculated. The corresponding graphs of concentration of each pollutant with time were plotted .The annually AQI values were also calculated and also plotted in graphs The study show that the minimum and maximum concentration of PM2.5,NO,SO2 in the year 2016 and in two months of 2017 and at the last we come to the conclusion and result is before the cyclone hit the Chennai city the air quality level range is in the satisfactory zone but the impact of vardah has changed its zone level to the moderate zone and thus in future upcoming months the quality of air will tremendously become bad.










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We at are thankful to Mr S.RAJ for submitting this paper to us.

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Kanwarjot Singh

Kanwarjot Singh is the founder of Civil Engineering Portal, a leading civil engineering website which has been awarded as the best online publication by CIDC. He did his BE civil from Thapar University, Patiala and has been working on this website with his team of Civil Engineers.

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