Flux Measurements, Flux Estimation Techniques, and Fine-Scale Turbulence Measurements in the Unstable Surface Layer over Land.

摘要

An experiment has provided a comparison of direct and indirect measurements of surface-layer fluxes of momentum, heat and moisture under unstable conditions. The direct momentum and heat flux measurements of the two groups agree well, and also agreed well with values inferred by the direct dissipation technique. The moisture flux estimates from the inertial-dissipation technique also agreed well with the directly measured values. Several of the important terms in the budgets of directly measured values. Several of the important terms in the budgets of turbulent kinetic energy and turbulent scalar variances were evaluated directly.