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    Author(s): X. Li; S. Zhong; X. BianW.E. Heilman
    Date: 2010
    Source: Journal of Geophysical Research. 115(D18107): 1-15.
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: View PDF  (1.78 MB)

    Description

    The climate and climate variability of low-level winds over the Great Lakes region of the United States is examined using 30 year (1979-2008) wind records from the recently released North American Regional Reanalysis (NARR), a three-dimensional, high-spatial and temporal resolution, and dynamically consistent climate data set. The analyses focus on spatial distribution and seasonal and interannual variability of wind speed at 80 m above the ground, the hub height of the modern, 77 m diameter, 1500 kW wind turbines. The daily mean wind speeds exhibit a large seasonal variability, with the highest mean wind speed (~6.58 m s-1) in November through January and the lowest (~:4.72 m s-1) in July and August. The spatial variability of the annual mean winds is small across the entire region and is dominated by land-water contrasts with stronger winds over the lake surface than over land. Larger interannual variability is found during the winter months, whereas smaller variations occur in mid to late summer. The interannual variability appears to have some connections to El Niño‚ÄźSouthern Oscillation, with lower mean wind speeds and more frequent occurrences of lulls during major El Niño episodes. Above-normal ice cover of the Great Lakes appears to be associated with slightly lower wind speeds and vice versa. According to NARR data and the criteria established by wind energy industry, the areas over Lake Superior, Michigan, and Ontario appear to be rich in wind resources, but most land areas in the region are either unsuitable or marginal for potential wind energy development.

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    Citation

    Li, X.; Zhong, S.; Bian, X.; Heilman, W.E. 2010. Climate and climate variability of the wind power resources in the Great Lakes region of the United States. Journal of Geophysical Research. 115(D18107): 1-15.

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