FRICTIONAL AND THERMAL INFLUENCES IN THE SOLAR SEMIDIURNAL TIDE
| Autor: | Miles F. Harris, Frederick G. Finger, Sidney Teweles |
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| Rok vydání: | 1966 |
| Předmět: | |
| Zdroj: | Monthly Weather Review. 94:427-447 |
| ISSN: | 1520-0493 0027-0644 |
| DOI: | 10.1175/1520-0493(1966)094<0427:fatiit>2.3.co;2 |
| Popis: | The frictional and thermal contributions to S22,2 (p), the dominant wave type in the progressive solar semidiurnal pressure wave, are evaluated from upper air observations at nine rawinsonde stations. The theoretical basis for the investigation follows from the approximation of friction as a potential force in the tidal equations. The model parameters and boundary conditions are those adopted by Siebert. Surface friction is evaluated semi-empirically, by the use of a friction model which is essentially an adaptation, to the semidiurnal motions, of the Ekman theory of the boundary layer. The assumption of a constant coefficient of the vertical transfer of momentum leads to uncertainties in the magnitude of the frictional contribution to the wave. Further uncertainties arise from a systematic error in the observed temperatures, caused by radiation effects on the radiosonde instrument. The latter error, however, is believed to be negligible in the lower troposphere, where an unexpectedly large tempe... |
| Databáze: | OpenAIRE |
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