Sensible heat flux is commonly measured with the eddy covariance method.
2.
The following is a detailed description of PCA using the covariance method ( see also here ) as opposed to the correlation method.
3.
In practical implementations especially with high dimensional data ( large ), the covariance method is rarely used because it is not efficient.
4.
Fast response high-precision analyzers are widely used to measure gas emissions and ecosystem fluxes using eddy covariance method when used together with fast-response sonic anemometer.
5.
Three-dimensional sonic anemometers are widely used to measure gas emissions and ecosystem fluxes using the eddy covariance method when used with fast-response infrared gas analyzers or laser-based analyzers.