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4.5.
Wind
The prevailing wind in the Study Area is west (winter) and south west (summer), with average wind
speeds of 21km/hr through those seasons (see
Figure 4.10
). Wind speeds (at 3pm) are typically greater
through summer and spring than during winter months.
Figure 4.10: Historical annual wind frequency (9am Left, 3pm Right) (1955 to 2004), Adelaide Airport
Source: Bureau of Meteorology
4.6.
Relative humidity
Adelaide experiences a mild climate with relative humidity below 45% through January and February and
peaks (above 60%) through winter.
4.7.
Climate Change Analysis
4.7.1. Approach
The IPCC’s
Fourth Assessment Report
(IPCC, 2007) provided a synthesis of climate change modelling
undertaken by leading international climate research organisations. Outputs from this work for Australia
are available on websites managed by CSIRO and BoM (
and
). They consolidate projections from global climate model (GCM) runs (from up to 23
models) for the 21
st
century under a range of greenhouse gas emissions scenarios and include data for a
wide range of climate parameters, including rainfall, temperature, wind speed and relative humidity.
