The temperature data used for the study came from seven meteorological stations in the regions of Northeast China and Hokkaido, Japan.The mean annual and seasonal temperature time series for the both areas were obtained by simply averaging the seven stations’ values in the period, checking the representation of the series. Based on the time series , this paper made a systemic comparative analysis on the characteristics of temperature variation. The results indicated that there was a obvious increasing trend of temperature during the last century in both areas .Northeast China entered the period of evident temperature increase earlier than Hokkaido. Mean annual temperature change was mainly due to higher rates of temperature increase in winter and spring ,and the rate of summer was the lowest. The mean annual temperature in the regions of Northeast China and Hokkaido had an evident Hurst phenomenon, namely a persistence trend component,and temperature would warm up continually in the next 100 years.Temperature in the regions of Northeast China and Hokkaido demonstrated oscillation characteristics with 9, 28, 40-42 year cycles, but the sequence of their main periods was different, and there were different sudden change years at different time scales.
DONG Man-yu, WU Zheng-fang, JIANG Yuan
. Comparative Analysis of Temperature Change in the regions of Northeast China and Hokkaido, Japan over the Last Hundred Years[J]. SCIENTIA GEOGRAPHICA SINICA, 2009
, 29(5)
: 684
-689
.
DOI: 10.13249/j.cnki.sgs.2009.05.684
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