| 释义 |
Rossby wave Physics and Meteorol.|ˈrɒsbɪ|
[f. the name of Carl-Gustaf Arvid Rossby (1898–1957), Swedish meteorologist + wave n.]
A long wavelength fluctuation of a current in a fluid system having no divergence and subject to Coriolis force; esp. a lateral fluctuation of a jet stream, with wavelength comparable with the radius of the earth.
[1951Jrnl. Meteorol. VIII. 264/2 The velocity..of Rossby long waves relative to a basic current.] 1963Deep-Sea Res. X. 735 Damped, stationary Rossby waves can occur in the ocean superimposed on a steady west to east flow. 1974Earth-Sci. Rev. X. 203 Planetary or Rossby waves, though probably unimportant in the fluid interior of the Earth, are of interest to earth scientists in general, because of their pervasive role in the general circulation of oceans and atmospheres. 1974Nature 5 Apr. 539/1 The intense Kuroshio current may generate a series of Rossby waves, which can propagate across the entire Pacific Basin. 1974Encycl. Brit. Macropædia X. 163/1 If floor conditions are neither divergent nor convergent.., the absolute vorticity should not change with time... This explains the reason for the formation of long planetary waves, the so-called Rossby waves, in the upper-tropospheric flow patterns. |