Sammenlign metoder

	Eddy Covariance	Bulk aerodynamisk flux	WRF Model
Fagområde	Meteorologi	Meteorologi	Meteorologi
Familie	Process / pipeline	Process / pipeline	Process / pipeline
Oprindelsesår	1951	1981	2000
Ophavsperson	Swinbank	Large and Pond	Skamarock and Klemp
Type	Micrometeorological flux measurement	Surface flux estimation method	Atmospheric simulation system
Oprindelig kilde	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.	Skamarock, W. C., Klemp, J. B., Dudhia, J., et al. (2008). A Description of the Advanced Research WRF Version 3. NCAR Technical Note NCAR/TN-475+STR.
Aliasser	Eddy covariance, EC flux, Eddy correlation, Direct flux measurement	Bulk aerodynamic approach, Bulk flux parametrization, Aerodynamic bulk method	Weather Research and Forecasting, WRF, ARW, NMM
Relaterede	3	3	4
Resumé	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.	The Weather Research and Forecasting (WRF) model is a mesoscale atmospheric simulation system used for weather forecasting, research, and climate applications. Developed cooperatively by NCAR, NOAA, and academic institutions, WRF became operational in 2004 and has become one of the most widely used atmospheric models worldwide.