NDLI: Influence of the 23 October 2002 Dust Storm on the Air Quality of Four Australian Cities

Content Provider	Springer Nature Link
Author	Chan, Yiu Chung Mctainsh, Grant Leys, John Mcgowan, Hamish Tews, Kenn
Copyright Year	2005
Abstract	Widespread drought and record maximum temperatures in eastern Australia produced a large dust storm on 23 October, 2002 which traversed a large proportion of eastern Australia and engulfed communities along a 2000 km stretch of coastline from south of Sydney (NSW) to north of Mackay (Queensland). This event provided an opportunity for a study of the impacts of rural dust upon the air quality of four Australian cities.A simple model is used to predict dust concentrations, dust deposition rates and particle size characteristics of the airborne dust in the cities. The total dust load of the plume was 3.35 to 4.85 million tones, and assuming a (conservative) plume height of 1500 m, 62–90% of this dust load was deposited in-transit to the coast. It is conservatively estimated that 3.5, 12.0, 2.1 and 1.7 kilotonnes of dust were deposited during the event in Sydney, Brisbane, Gladstone and Mackay, respectively. In the South East Queensland region, this deposition is equivalent to 40% of the total annual TSP emissions for the region.The event increased TSP, PM$_{10}$ and PM$_{2.5}$ concentrations and reduced the visibility beyond the health and amenity guidelines in the four cities. For example, the 24-h average PM$_{10}$ concentrations in Brisbane and Mackay, were 161 and 475 μg m$^{−3}$ respectively, compared with the Australian national ambient air quality standard of 50 μg m$^{−3}$. The 24-h average PM$_{2.5}$ concentration in Brisbane was 42 μg m$^{−3}$, compared with the national advisory standard of 25 μg m$^{−3}$. These rural dusts significantly increased PM$_{10}$/TSP ratios and decreased PM$_{2.5}$/PM$_{10}$ ratios, indicating that most of the particles were between PM$_{2.5}$ and PM$_{10}$.
Starting Page	329
Ending Page	348
Page Count	20
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	164
Issue Number	1-4
e-ISSN	15732932
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2005-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Australia dry deposition dust storm PM$_{2.5}$ PM$_{10}$ Hydrogeology Environment Atmospheric Protection/Air Quality Control/Air Pollution
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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