Plot power spectrum CO2 continents

[laserlab]

Work on a single data analysis Jupyter notebook using functions from preparation.py that contain for each task below only one plot:

combined plot of cleaned up power spectra by using some combination of waveform modification (which should include padding, windowing, taking the FFT, removing noise, inverse FFT, and undoing the window+padding) of the CO2 data on available continents in the frequency domain that also highlights the peak(s) (1 member due Friday 2pm)

[p-pxmpo]

Thank you, will work on it ASAP