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| Monin-Obukhovs likhetsteori× | Eddy Covariance× | |
|---|---|---|
| Ämnesområde | Meteorologi | Meteorologi |
| Familj | Process / pipeline | Process / pipeline |
| Ursprungsår≠ | 1954 | 1951 |
| Upphovsperson≠ | Monin and Obukhov | Swinbank |
| Typ≠ | Similarity scaling framework | Micrometeorological flux measurement |
| Ursprungskälla≠ | Monin, A. S., & Obukhov, A. M. (1954). Basic laws of turbulent mixing in the ground layer of the atmosphere. Tr. Akad. Nauk SSSR, 24, 163-187. link ↗ | Baldocchi, D. (2003). Assessing the eddy covariance technique for evaluating carbon dioxide fluxes of ecosystems: past, present and future. Global Change Biology, 9(4), 479-492. DOI ↗ |
| Alias≠ | Monin-Obukhov, Similarity theory, Monin-Obukhov length scale | Eddy covariance, EC flux, Eddy correlation, Direct flux measurement |
| Närliggande | 3 | 3 |
| Sammanfattning≠ | Monin-Obukhov similarity theory is a fundamental framework in boundary layer meteorology that describes how wind speed, temperature, and humidity vary with height near the surface. Published in 1954, it shows that normalized vertical profiles depend on a single dimensionless parameter—the Monin-Obukhov stability parameter—which quantifies the balance between mechanical turbulence and buoyant convection. | The eddy covariance method is a direct, micrometeorological technique that measures turbulent fluxes of momentum, heat, water vapor, and CO2 by computing the covariance between high-frequency fluctuations of wind velocity and scalar properties (temperature, humidity, concentration). It is the gold standard for measuring ecosystem-atmosphere exchanges and validating model parameterizations. |
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