[1]WANG Zhijie,SU Yuan.Characteristics of Air Temperature in Hanzhong City from 1951 to 2010[J].Research of Soil and Water Conservation,2016,23(01):169-174.
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Characteristics of Air Temperature in Hanzhong City from 1951 to 2010
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 01
Page number:
169-174
Column:
Public date:
2016-02-28
- Title:
- Characteristics of Air Temperature in Hanzhong City from 1951 to 2010
- Keywords:
- air temperature; trend analysis; mutation analysis; Hanzhong City
- CLC:
- P423.3
- DOI:
- -
- Abstract:
- Air temperature change is one of important issues in the research of global climate change. The trend of annual and seasonal air temperature in different regions of China is various due to the influence of terrain and monsoon. Using the daily and annual average temperature from 1951 to 2010 as the basic data with the climate trend rate, the moving average method, and the M-K trend test and mutation analysis method, we analyzed the characteristics of the annual and seasons air temperature in Hanzhong City. The results showed that: (1) the average annual air temperature of Hanzhong City in nearly 60 years had the increasing trend, and the temperature tendency rate was 0.18℃/10 a, it experienced two periods: the cold stage before the mid-1990s is and warm stage after mid-1990s; (2) the decadal variability of annual average temperature displayed the ‘gently increasing-decreasing-significantly increasing’ trend, the temperature had the obvious mutation with the mutation time in 1999, the annual average temperature after mutation was 0.9℃ higher than that before mutation; (3) the average air temperature of the four seasons was obvious increasing since the 1990s, and the air temperature after 1990s was higher than the average temperatures of all seasons. The increasing rate of air temperature was greater in spring and winter than in autumn, and then in summer, however, it was less than the same period level in China; (4) the average air temperature of winter and spring in nearly 60 years had the obvious mutation with the mutation times in 1999 and 1997, respectively, however, it was not obvious mutation in summer and autumn.
- References:
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