Sea surface height observations of the 34N 'waveguide' in the North Atlantic.
We present a study of the energetic zonal band at 34oN in the North Atlantic using a wavelet analysis of more than 8 years of TOPEX/POSEIDON altimeter data. It is already well-established in the literature that this zonal 'waveguide' is dominated by large-scale propagating features. The wa...
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| Format: | Article |
| Language: | English |
| Published: |
2001.
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| Online Access: | Get fulltext |
| LEADER | 01255 am a22001213u 4500 | ||
|---|---|---|---|
| 001 | 202 | ||
| 042 | |a dc | ||
| 100 | 1 | 0 | |a Cromwell, D. |e author |
| 245 | 0 | 0 | |a Sea surface height observations of the 34N 'waveguide' in the North Atlantic. |
| 260 | |c 2001. | ||
| 856 | |z Get fulltext |u https://eprints.soton.ac.uk/202/1/Cromwell.pdf | ||
| 520 | |a We present a study of the energetic zonal band at 34oN in the North Atlantic using a wavelet analysis of more than 8 years of TOPEX/POSEIDON altimeter data. It is already well-established in the literature that this zonal 'waveguide' is dominated by large-scale propagating features. The wavelet analysis yields sea surface height variance at a range of periods and wavelengths, allowing us to observe and quantify evolution of the features in space and time. Signal variance west of the mid-Atlantic ridge at 34oN is larger than to the east of the ridge: by a factor of ~2 in the period band 0.5-0.9 years, in which baroclinic Rossby waves and eddies propagate. The period of the peak energy is reduced crossing the ridge from ~1 year to ~7-9 months, before rising again to the annual cycle on the other side. There is also evidence of energy peaks at periods of ~2-4 years in the Gulf Stream region and east of the ridge. | ||
| 655 | 7 | |a Article | |