เปรียบเทียบวิธี

	Bulk Aerodynamic Flux	Eddy Covariance	Thermal Wind
สาขาวิชา	อุตุนิยมวิทยา	อุตุนิยมวิทยา	อุตุนิยมวิทยา
ตระกูล	Process / pipeline	Process / pipeline	Process / pipeline
ปีกำเนิด	1981	1951	1920s
ผู้ริเริ่ม	Large and Pond	Swinbank	Jacobbian insights from geostrophic flow
ประเภท	Surface flux estimation method	Micrometeorological flux measurement	Wind-temperature relationship
แหล่งต้นตำรับ	Large, W. G., & Pond, S. (1981). Open ocean momentum flux measurements in moderate to strong winds. Journal of Physical Oceanography, 11(3), 324-336.	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.	Holton, J. R. (2004). An Introduction to Dynamic Meteorology (4th ed.). Academic Press.
ชื่อเรียกอื่น	Bulk aerodynamic approach, Bulk flux parametrization, Aerodynamic bulk method	Eddy covariance, EC flux, Eddy correlation, Direct flux measurement	Thermal wind, Vertical wind shear, Barotropic
ที่เกี่ยวข้อง	3	3	3
สรุป	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.	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 thermal wind relationship is a fundamental meteorological principle that links vertical wind shear to horizontal temperature gradients. It states that wind speed increases with height in the direction of warming—a direct consequence of hydrostatic and geostrophic balance combined with the ideal gas law.