海面阻力系数与大气稳定度的关系

RELATIONSHIPS BETWEEN ATMOSPHERIC STABILITY AND DRAG COEFFICIENT OVER SEA SURFACE

海面阻力系数(C_D)决定于多种因素。本文着重讨论了它与大气稳定度(ζ或TV)的关系,并基于实测资料给出了经验关系式。为克服前人关于大气稳定度判据不一致的缺欠,提出了一组新的判据,并就中性平衡态给出了ζ、R_i、DT和TV的取值范围。

The magnitude of drag coefficient (CD) over sea surface is determined by many factors. The dependence of C on atmospheric stability (ζ or TV) is emphatically discussed in this paper. On the basis of field observations, regressive equations have been obtained. To overcome the deficiency in inconsistency of forerunners' atmospheric stability criteria, a new set is proposed. So far as the neutral equilibrium condition of atmosphere is concerned, the chosen range of values of Richardson number (R), the air-sea temperature difference (DT), ζ and TV are defined.