On the Motion of air in the lower Atmospher. (Part 3)

[摘要] D. Brunt and other authors pointed out that the results of meteorological observations made at O'Gyalla, Horns Rev, Lindenberg and other places, do not satisfy Taylor's well known equation, U=V(cosθ-sinθ). (1)In our previous papers we got a following equation (2), by making an assumption that the angle between the gradient wind and the resistance is nearly constant;- U=V{cosθ-tan(c-θ)sinθ} (2) where U is the velocity of the surface wind, V that of the gradient wind, θ the angle between the velocity of wind and the straight isobars, c a certain constant of which the mean value is found to be 65° or 70° as a result of actual observations.In the present paper, we have shown that practically the equation is applicable, with relatively small deviation, for every value of θ, by comparing the values computed by this equation with observed ones at Croydon, Lympne, Calshot, Holyhead, Lindenberg, Naha and Tateno.The author has proceeded further to investigate the relation between the vertical distribution of the wind and the lapse-rate of temperature with the observed values at Lindenberg.It was shown that the ratio of the velocity of the surface wind to that of the gradient wind is nearly constant namely about 0.4 in the case of inversion, increasing with the lapse-rate.

[学科分类] 大气科学