قارن الطرق

	طريقة التغاير الدوامي (Eddy Covariance)	تدفقات الديناميكا الهوائية بالجملة	نظرية مونين-أوبوخوف للتشابه
المجال	علم الأرصاد الجوية	علم الأرصاد الجوية	علم الأرصاد الجوية
العائلة	Process / pipeline	Process / pipeline	Process / pipeline
سنة النشأة	1951	1981	1954
صاحب الطريقة	Swinbank	Large and Pond	Monin and Obukhov
النوع	Micrometeorological flux measurement	Surface flux estimation method	Similarity scaling framework
المصدر التأسيسي	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.	Large, W. G., & Pond, S. (1981). Open ocean momentum flux measurements in moderate to strong winds. Journal of Physical Oceanography, 11(3), 324-336.	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.
الأسماء البديلة	Eddy covariance, EC flux, Eddy correlation, Direct flux measurement	Bulk aerodynamic approach, Bulk flux parametrization, Aerodynamic bulk method	Monin-Obukhov, Similarity theory, Monin-Obukhov length scale
ذات صلة	3	3	3
الملخص	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.	The bulk aerodynamic method estimates surface energy and momentum fluxes from standard meteorological observations. Rather than measuring turbulent fluxes directly, it parameterizes them using measurements of wind speed, temperature, and moisture at a reference height (typically 10 m) and surface conditions, multiplied by empirically derived drag and transfer coefficients.	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.