Meterological Data
Meteorological Data
Meteorological data were collected at Portland
International Airport and include air temperature, wind speed, wind direction,
dew point, and cloud cover. Figure 1 shows the location of the Portland
International Airport and several other meteorological stations in the
model region. The Portland International Airport was selected because
it contained the longest historical record of data and fairly represents
the meteorological conditions in the model domain. Future work could
investigate the feasibility of using additional meteorological stations.
Figure 2 through Figure 5 show the meteorological data at the Portland
International Airport from January 1992 to September 2000.
Figure 1. Location
of several met stations in the model region
Figure 2. Air Temperature,
oC,
10 day moving average at the Portland International Airport 1992-2000
Figure 3. Dew Point
Temperature,
oC, 10 day moving average at the Portland
International Airport 1992-2000
Figure 4. Wind Speed,
m/s, 10 day moving average at the Portland International Airport, 1992-2000
Figure 5. Wind Direction,
degrees, 10 day moving average at the Portland International Airport, 1992-2000
In Figure 6 cloud coverage varies on a scale of
0 to 10 with zero representing no cloud coverage and ten representing full
cloud coverage. In July 1996 the method for measuring cloud coverage
changed to a scale of 1 to 4 resulting in less approximate conditions.
The scale was converted to a 1 to 10 scale to be compatible with historical
data.
Figure 6. Cloud Coverage
10 day moving average at the Portland International Airport, 1992-2000
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