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Wind speed climatol...
Wind speed climatology and trends for Australia, 1975–2006: Capturing the stilling phenomenon and comparison with near-surface reanalysis output
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McVicar, T.G. (author)
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Van Neil, T.G. (author)
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Li, L.T. (author)
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Roderick, M.L. (author)
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- Rayner, D.P. 1973 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences
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Ricciardulli, L. (author)
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Donohue, R.J. (author)
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(creator_code:org_t)
- 2008
- 2008
- English.
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In: Geophys. Res. Lett.. ; 35
- Related links:
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https://gup.ub.gu.se...
Abstract
Subject headings
Close
- Near-surface wind speeds (u) measured by terrestrial anemometers show declines (a ‘stilling’) at a range of mid-latitude sites, but two gridded u datasets (a NCEP/NCAR reanalysis output and a surface-pressure-based u model) have not reproduced the stilling observed at Australian stations. We developed Australia-wide 0.01° resolution daily u grids by interpolating measurements from an expanded anemometer network for 1975–2006. These new grids represented the magnitude and spatial-variability of observed u trends, whereas grids from reanalysis systems (NCEP/NCAR, NCEP/DOE and ERA40) essentially did not, even when minimising the sea-breeze impact. For these new grids, the Australian-averaged u trend for 1975–2006 was −0.009 m s−1 a−1 (agreeing with earlier site-based studies) with stilling over 88% of the land-surface. This new dataset can be used in numerous environmental applications, including benchmarking general circulation models to improve the representation of key parameters that govern u estimation. The methodology implemented here can be applied globally.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
Keyword
- near-surface wind speed
- trends
- stilling
Publication and Content Type
- ref (subject category)
- art (subject category)
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