Back to Search
Start Over
Atmospheric tides over the Pyrenees: observational study and numerical simulation
- Source :
- Quarterly Journal of the Royal Meteorological Society, Quarterly Journal of the Royal Meteorological Society, Wiley, 2010, 136 (650), pp.1263-1274. ⟨10.1002/qj.626⟩, Quarterly Journal of the Royal Meteorological Society, 2010, 136 (650), pp.1263-1274. ⟨10.1002/qj.626⟩
- Publication Year :
- 2010
- Publisher :
- HAL CCSD, 2010.
-
Abstract
- International audience; Barometric tides around the Pyrenees mountain range are analyzed by means of synoptic surface-station data recorded during one year, surface data from the Pyrenees Experiment (PYREX) and the CRA/LA Very High Frequency (VHF) wind profiler installed in the north of the range. Tides are decomposed into their diurnal and semi-diurnal components. Diurnal tides show a strong non-migrating component and are very dependent on local conditions. Semi-diurnal tides are more homogeneous and present a north-south asymmetry, also noted in the Alps. This cross-range asymmetry could be related to some interference effect caused by the mountain range in the migrating semi-diurnal tide wave. The asymmetry of the diurnal component presents a very strong seasonal variation, probably related to local diabatic effects. A three-month long simulation has been carried out with the National Center for Atmospheric Research's Weather Research and Forecasting (WRF) limited-area model to try to reproduce the tide structure. The validation of the results with wind-profiler data shows reasonable agreement with the observed diurnal tide and poorer results for the semi-diurnal component. At surface level, however, the model reproduces some of the features of the observed semi-diurnal tide, and especially the cross-range asymmetry.
Details
- Language :
- English
- ISSN :
- 00359009 and 1477870X
- Database :
- OpenAIRE
- Journal :
- Quarterly Journal of the Royal Meteorological Society, Quarterly Journal of the Royal Meteorological Society, Wiley, 2010, 136 (650), pp.1263-1274. ⟨10.1002/qj.626⟩, Quarterly Journal of the Royal Meteorological Society, 2010, 136 (650), pp.1263-1274. ⟨10.1002/qj.626⟩
- Accession number :
- edsair.dedup.wf.001..c6640d6d1161f2ddee95dbe337b1665d