Open Access

Fig. 1.

image

Definition and selection criteria for a dynamic event. Temporal evolution of the brightness temperature at a selected pixel exhibits a peak enclosed by two minima (pre-min. and post-min.). The green graph shows the box-car average of the original data (black graph). The blue dashed lines mark the peak amplitude and FWHM lifetime. The horizontal red dashed-dotted line marks the temperature of the local minima with highest temperature; in this case the post-peak minima, which is the base brightness temperature considered for the specific event. The pink dashed-dotted line shows the temperature of the other minima; in this case the pre-peak minima. The red dotted lines mark the times where the temperature is at FWHM and peak.

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