Wavelets for Atmospheric Gas Analysis
نویسنده
چکیده
Atmospheric CO2, CH4, and CO are measured in a variety of locations across Canada. The wavelet transform is used to find points of interest, such as the daily carbon cycle, as well as longer term oscillations. Wavelet coherence finds patterns linking the sequences around 7 to 10 day oscillations, mostly during the summer. The daily CO2 cycle is stronger in more southern and urban locales, indicating that it is linked to vegetation and possibly human activity. CH4 is also much more present in the urban environment. The qualities of the wavelet transform are discussed, primarily in reference to turbulent data. Selection of a proper mother wavelet is discussed.
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