Temperature Variation Characteristics of Bengbu City in Recent 45 Years
In term of the temperature data during 1967-2011 in the four ground meteorological observa?tion stations in Bengbu,through the methods of the linear trend rate,movingaverage,Mann-Kendall nonpara?metric test,departureaccumulation,etc,main characteristics of temperature variation in Bengbu in recent 45 years wereanalyzed. The results show that:theannualaverage temperature in Bengbu keeps risingata speed of?about 0.4 degrees Celsius per decade,and it mutated inabout 1993. Warming trends in the three seasons of spring,autumnand winter are obvious,andall reach extremely significant level.Autumn warming change is the most notable,winter warming range is the biggest.Changes of summer warmingand extreme maximum temperatureare not obvious,and both have 6a - 8a cyclical changes. High temperature days trend is not ob?viousand mainly shows up 14a cyclical changes.The warming trends of theaverage minimum temperature,ex?treme minimum temperatureand temperatureat 2:00am are obvious.The number of days is less than or equal to 0℃ decreasing trend wasalso significantly reduced.Winter,low temperatureand night make the big?gest contribution to the process of climate warming in Bengbu.
NETL
NSTL
万方数据
维普
