Construction of the homogenized temperature series during 1910-2014 and its changes in Hunan Province

doi:10.1007/s11442-017-1377-5

Abstract

Abstract:

Based on the statistical method and the historical evolution of meteorological stations, the temperature time series for each station in Hunan Province during 1910-2014 are tested for their homogeneity and then corrected. The missing data caused by war and other reasons at the 8 meteorological stations which had records before 1950 is filled by interpolation using adjacent observations, and complete temperature time series since the establishment of stations are constructed. After that, according to the representative analysis of each station in different time periods, the temperature series of Hunan Province during 1910-2014 are built and their changes are analyzed. The results indicate that the annual mean temperature has a significant warming trend during 1910-2014 and the seasonal mean temperature has the largest rising amplitude in winter and spring, followed by autumn, but no significant change in summer. Temperature variation over Hunan Province has several significant warm-cold alternations and more frequent than that in whole China. Annual and seasonal mean temperatures except summer and autumn have abrupt warming changes in the recent 100 years. The wavelet analysis suggests that the annual and four seasonal mean temperatures in recent 100 years have experienced two climatic shifts from cold to warm.

Key words: Hunan Province, homogeneity, temperature series, change characteristics

Jiadong PENG, Yufang LIAO, Yuanhua JIANG, Jianming ZHANG, Lijie DUAN. Construction of the homogenized temperature series during 1910-2014 and its changes in Hunan Province[J].Journal of Geographical Sciences, 2017, 27(3): 297-310.

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Station No.	Station name	Starting time (month/year)	Missing periods in record (month/year)	Missing months
57584	Yueyang	12/1909	12/1916-01/1917	180
			12/1917-01/1918
			03/1920-07/1921
			12/1921-05/1922
			12/1924
			05/1938-12/1950
57655	Yuanling	07/1942	02/1949-09/1949	22
			11/1949-12/1950
57662	Changde	08/1932	12/1934	97
			11/1938-03/1946
			06/1949-12/1949
57679	Changsha	06/1909	04/1910-09/1910	49
			01/1923
			10/1924
			11/1938-03/1939
			09/1939-10/1939
			10/1941
			12/1941-03/1942
			07/1943
			05/1944-03/1946
			02/1947
			05/1949-08/1949
Station No.	Station name	Starting time (month/year)	Missing periods in record (month/year)	Missing months
57745	Zhijiang	01/1937	03/1938-05/1938	12
			09/1949-05/1950
57766	Shaoyang	09/1936	06/1944-09/1950	76
57872	Hengyang	01/1933	01/1939-12/1939	67
			10/1941
			01/1944-06/1946
			01/1948-12/1949
57972	Chenzhou	12/1936	11/1941	45
			06/1944-07/1946
			07/1949-12/1950

Station No.	Station name	Break points of average temperature series	Break points of maximum temperature series	Break points of minimum temperature series
57554	Sangzhi	1972	1972	1972
57565	Lixian	1974	1962, 1974	—
57657	Luxi	—	1996	—
57662	Changde	1953	1953	—
57663	Hanshou	1963, 1971, 1980	1971, 1980	1963, 1971, 1980
57666	Taojiang	1980	1980	1967, 1980
57671	Yuanjiang	—	1968	1968
57674	Yiyang	—	1961	—
57679	Changsha	—	1963	1963
57682	Pingjiang	1987	1987	1987
57687	Wangchengpo	1974	1974	—
57688	Liuyang	2000	1960, 2000	2000
57740	Fenghuang	1970	1970	—
57752	Xupu	1958, 1966	1966	—
57760	Lengshuijiang	1981	1981	1981
57761	Xinhua	1959	1959	1959
57768	Xinshao	—	1964	—
57771	Shaoshan	1974	1974	1974
57772	Xiangxiang	1965	—	—
57773	Xiangtan	1982	1982	1982
57777	Hengshan	1965	—	—
57779	Youxian	1976	—	—
57780	Zhuzhou	1975	1975	1975
57781	Liling	1963	1963	1963
57846	Suining	1963	1963	1963
57860	Shaoyangxian	2000	2000	2000
57866	Yongzhou	1953	1953	1953
57867	Dong’an	1963	—	—
57871	Hengyangxian	1962	—	—
57872	Hengyangshi	1960	1960	1960
57874	Changning	1974	1974	1974
57881	Anren	1967	1967	1967
57889	Guidong	1970	1970	—
57965	Daoxian	—	1964	—
57966	Ningyuan	—	1965	1965
57971	Xintian	1972	—	—
57975	Lanshan	1960	1960	—
57978	Linwu	1978	1978	1978
57981	Zixing	1992	1992	1992
59063	Jianghua	1989	1989	1989

Station No.	Station name	Break points of maximum temperature series	Break points of minimum temperature series
57584	Yueyang	1937	—
57679	Changsha	1950	1932,1950
57872	Hengyang	1947	—

	1	2	3	4	5	6	7	8	9	10	11	12
Changsha	0.977	0.982	0.981	0.959	0.973	0.970	0.958	0.926	0.957	0.962	0.982	0.974
Yueyang	0.955	0.966	0.963	0.908	0.905	0.888	0.872	0.902	0.906	0.894	0.956	0.919
Average of 2 stations	0.971	0.977	0.978	0.944	0.956	0.948	0.938	0.938	0.945	0.943	0.975	0.955

	Winter	Spring	Summer	Autumn
Ascending rate during 1910-2014	0.13^**	0.11^**	0.03	0.05 ^*
Ascending rate during 1961-2014	0.19^**	0.22^**	0.07	0.17 ^**