The Variation Of Extreme Low Temperature Events In The Northwest Pacific Under The Global Warming

Under the background of global warming, the variation of extreme low temperature events in the Northwest Pacific are undergoing significant changes. The extreme low temperature events have obvious monthly, inter-annual and inter-decadal characteristics. Extreme low temperature events were mainly concentrated in January-March. It showed an increasing trend from1982 to 1991, a downward trend from 1992 to 2011 and an upward trend from 2012 onwards. The frequency of extreme low temperature events has significantly reduced. The number of days and the duration of a single event have significantly reduced. The average temperature and the minimum temperature of a single extreme low temperature event show a linear upward trend. The extreme low temperature events have two time scales cycles, with a large cycle of 13-20a and small cycle of 4-10a. Over the past 33 years, extreme low temperature events have changed from small time-scale cycle to large time-scale cycle.