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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
environmental science
Preliminary assessment of risk of ozone impacts to maize (Zea mays) in southern Africa
Environmental Pollution, Volume 140, No. 2, Year 2006
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Description
Surface ozone concentrations in southern Africa exceed air quality guidelines set to protect agricultural crops. This paper addresses a knowledge gap by performing a preliminary assessment of potential ozone impacts on vegetation in southern African. Maize (Zea mays L.) is the receptor of interest in the main maize producing countries, i.e. South Africa, Zambia and Zimbabwe. Surface ozone concentrations are estimated for the growing season (October to April) using photochemical modelling. Hourly mean modelled ozone concentrations ranged between 19.7 and 31.2 ppb, while maximums range between 28.9 and 61.9 ppb, and are near 30 ppb over South Africa and Zambia, while in Zimbabwe, they exceed 40 ppb and translate into monthly AOT40 values of over 3000 ppb h in five of the seven months of the growing season. This study suggests that surface ozone may pose a threat to agricultural production in southern African, particularly in Zimbabwe. © 2005 Elsevier Ltd. All rights reserved.
Authors & Co-Authors
van Tienhoven, Anna Mieke
South Africa, Pretoria
The Council for Scientific and Industrial Research
Zunckel, Mark
South Africa, Pretoria
The Council for Scientific and Industrial Research
Emberson, Lisa D.
United Kingdom, York
University of York
Koosailee, Avishkar
South Africa, Secunda
Sasol Synfuels
Otter, Luanne B.
South Africa, Johannesburg
University of the Witwatersrand
Statistics
Citations: 30
Authors: 5
Affiliations: 4
Identifiers
Doi:
10.1016/j.envpol.2005.07.016
ISSN:
02697491
Research Areas
Environmental
Study Locations
South Africa
Zambia
Zimbabwe