Continuous wavelet transform and discrete multi-resolution analysis of surface fluxes and atmospheric stability*
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Abstract
Abstract Abstract Variations of land surface fluxes of sensible heat (H) (LE), and CO2 (F-CO2) obtained from the eddy-co-variance measurements above a winter wheat field from March 30 to April 24, 2001 have been studied at scales ranging from 10 minutes to days. Wavelet transform is used in the analysis of land surface fluxes and atmospheric stability (ζ) calculated from the measurements to reveal the changes in land surface fluxes in hours to days scales. The main results are: (1) Concise and compact information about the fluxes, net radiation (R ν), temperature (T) and ζ in the scale-time domain are extracted from the data by continuous wavelet analysis, and 1 day, 0.5 day and short-period (shorter than 0.5 day) components are revealed. Continuous wavelet coefficients can be used to characterize periodic components of changes in fluxes and ζ. (2) Discrete-time multi-resolution analysis can be used to concentrate total energy variance of time series of the measurements to a smaller number of coefficients...
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Plant Water Relations and Carbon Dynamics · Meteorological Phenomena and Simulations · Climate variability and models
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References (28)
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