This paper focused on researching the fluctuation of
carbon trading price caused by the external shocks through analyzing the data
of three-phase carbon spot price from Blue Next Environmental Exchange and the
European Climate Exchange (ECX). The
results are the following:1)released important
information and events will seriously affect the carbon price fluctuations; some important information are
released that cause sharp
fluctuations in a short period of time; the Sudden events lead tolong-term,
drastic fluctuations in carbon price andits influence over the impact of important
information;2)the impact of external
events is always corresponding to the low-frequency component of time sequence; this is because the low-frequency
component usually reflects the data signal amplitude which is severer, and the high-frequency component represents the data
signal amplitude which is a smaller part; it has
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