The paper by Ulf Högström re-evaluates non-dimensional wind and temperature profiles in the atmospheric surface layer, addressing systematic deviations observed in previous experiments. These discrepancies are attributed to instrumental shortcomings, particularly flow distortion. The study presents results from a field experiment that minimized such errors and other measurement issues. Data from 90 30-minute runs at three levels (3, 6, and 14 meters) and simultaneous profile data were analyzed to determine flux-gradient relationships for wind and temperature. Key findings include: - Momentum and sensible heat fluxes are constant within ±7% for the entire 14-meter layer under slightly stable conditions. - For more stable conditions, the flux decreases systematically in the 6 to 14-meter range. - Values for von Kármán’s constant (0.40 ± 0.01) and φh at neutrality (0.95 ± 0.04) are derived from near-neutral conditions. - A comparative study of various formulas for φm and φh shows that after corrections for flow distortion, the most commonly used formulas (Businger et al., 1971 and Dyer, 1974) agree with the data within ±10% for unstable conditions. - For stable conditions, the modified Businger et al. (1971) curve fits the data well for φh, while Dyer’s (1974) curve provides slightly better agreement for φm. The paper highlights the importance of addressing flow distortion and instrumental inaccuracies to achieve more reliable results in atmospheric surface layer studies.The paper by Ulf Högström re-evaluates non-dimensional wind and temperature profiles in the atmospheric surface layer, addressing systematic deviations observed in previous experiments. These discrepancies are attributed to instrumental shortcomings, particularly flow distortion. The study presents results from a field experiment that minimized such errors and other measurement issues. Data from 90 30-minute runs at three levels (3, 6, and 14 meters) and simultaneous profile data were analyzed to determine flux-gradient relationships for wind and temperature. Key findings include: - Momentum and sensible heat fluxes are constant within ±7% for the entire 14-meter layer under slightly stable conditions. - For more stable conditions, the flux decreases systematically in the 6 to 14-meter range. - Values for von Kármán’s constant (0.40 ± 0.01) and φh at neutrality (0.95 ± 0.04) are derived from near-neutral conditions. - A comparative study of various formulas for φm and φh shows that after corrections for flow distortion, the most commonly used formulas (Businger et al., 1971 and Dyer, 1974) agree with the data within ±10% for unstable conditions. - For stable conditions, the modified Businger et al. (1971) curve fits the data well for φh, while Dyer’s (1974) curve provides slightly better agreement for φm. The paper highlights the importance of addressing flow distortion and instrumental inaccuracies to achieve more reliable results in atmospheric surface layer studies.