Influence of meteorology on ambient air quality in Morogoro, Tanzania
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Date
2011-03
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Publisher
International Journal of Enviromental Science.
Abstract
The influence of meteorological parameters on air quality was investigated for a rural
background site in Morogoro. Precipitation, temperature, relative humidity and wind speed
were measured during wet and dry seasons of 2005 and 2006 period and their relationship
with reported mass of particles of aerodynamic diameter smaller than 10 μm (PM10) for the
site was assessed. The results show that higher PM10 mass concentrations (45μg/m 3 ) were
obtained during the 2005 dry season and the lowest (13 μg/m 3 ) during the 2006 wet season. It
is interpreted that reasons for the higher levels of the particulate matter mass in the dry season
are due to temperature inversions and absence of rain washdown. The observed particulate
matter levels are also affected by the variations in sources strengths and in meteorological
conditions such as mixing height, precipitation, relative humidity, wind speed and direction
as supported by air mass trajectories.
Description
Journal Article
Keywords
Air Quality, PM, Meteorology, Seasons, Trajectory