roughness length

短语

词形变化

roughness lengths 复数 roughness lengths

释义与例句

n.
  1. 1.

    A parameter of some vertical wind profile equations that model the horizontal mean wind speed near the ground; in the log wind profile, it is equivalent to the height at which the wind speed theoretically becomes zero.

词源

So called because it is typically related to the height of terrain roughness elements.

来源：wiktionary