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Journal article
Assessment of Spatial Variability across Multiple Pollutants in Auckland, New Zealand
International journal of environmental research and public health, v 16(9), p1567
05 May 2019
PMID: 31060269
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Spatial saturation studies using source-specific chemical tracers are commonly used to examine intra-urban variation in exposures and source impacts, for epidemiology and policy purposes. Most such studies, however, has been performed in North America and Europe, with substantial regional combustion-source contributions. In contrast, Auckland, New Zealand, a large western city, is relatively isolated in the south Pacific, with minimal impact from long-range combustion sources. However, fluctuating wind patterns, complex terrain, and an adjacent major port complicate pollution patterns within the central business district (CBD). We monitored multiple pollutants (fine particulate matter (PM
), black carbon (BC), elemental composition, organic diesel tracers (polycyclic aromatic hydrocarbons (PAHs), hopanes, steranes), and nitrogen dioxide (NO
)) at 12 sites across the ~5 km
CBD during autumn 2014, to capture spatial variation in traffic, diesel, and proximity to the port. PM
concentrations varied 2.5-fold and NO
concentrations 2.9-fold across the CBD, though constituents varied more dramatically. The highest-concentration constituent was sodium (Na), a distinct non-combustion-related tracer for sea salt (µ = 197.8 ng/m
(SD = 163.1 ng/m
)). BC, often used as a diesel-emissions tracer, varied more than five-fold across sites. Vanadium (V), higher near the ports, varied more than 40-fold across sites. Concentrations of most combustion-related constituents were higher near heavy traffic, truck, or bus activity, and near the port. Wind speed modified absolute concentrations, and wind direction modified spatial patterns in concentrations (i.e., ports impacts were more notable with winds from the northeast).
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Details
- Title
- Assessment of Spatial Variability across Multiple Pollutants in Auckland, New Zealand
- Creators
- Ian Longley - National Institute of Water and Atmospheric ResearchBrett Tunno - University of PittsburghElizabeth Somervell - National Institute of Water and Atmospheric ResearchSam Edwards - National Institute of Water and Atmospheric ResearchGustavo Olivares - National Institute of Water and Atmospheric ResearchSally Gray - National Institute of Water and Atmospheric ResearchGuy Coulson - National Institute of Water and Atmospheric ResearchLeah Cambal - University of Pittsburgh Graduate School of Public Health, Department of Environmental and Occupational Health, Pittsburgh, PA 15219, USA. ltipton86@gmail.comCourtney Roper - University of PittsburghLauren Chubb - University of PittsburghJane E Clougherty - University of Pittsburgh
- Publication Details
- International journal of environmental research and public health, v 16(9), p1567
- Publisher
- MDPI
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Environmental and Occupational Health
- Web of Science ID
- WOS:000469517300092
- Scopus ID
- 2-s2.0-85065649270
- Other Identifier
- 991019169216204721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Environmental Sciences
- Public, Environmental & Occupational Health