Meteorological conditions above the working face, such as
ambient air pressure, temperature, humidity, and wind speed,
are important factors that can affect odor emission and migration
from landfills. High temperature is stated to be the main reason
for the high average level of OCs concentration in spring and summer
(Ying et al., 2012; Statheropoulos et al., 2005). The volatility of
some odorous compounds, especially those with relatively small
molecules, can be significantly enhanced under high temperatures.
In comparison, the fluctuation of air pressure may contribute more
to shifts in temporal odor concentration during the course of the
day, an effect that is more significant in winter (Table 5). Capelli
et al. (2008) pointed out that high air pressure may cause the infiltration
of air inside the landfill body, impeding the emission of