Regular observation of near surface air temperature in Tianjin began in October 1890. There is a temperature series over 110 years and the continuity of the temperature observations has been well conserved. However, there seems to be considerable inhomogeneity in the series before 1951 with less metadata can be collected. Unfortunately as well, there is no available reference series can be used to detect the possible inhomogeneity. In this paper, the inhomogeneity in daily minimum and maximum temperature observations in Tianjin from 1891 to 1950 was examined and adjusted using the RHtestV3 software package, without reliable reference series available. To verify the rationality of the adjustment, multiple temperature series from areas around Tianjin were collected from different sources and employed as consistency references. The examination indicated 6 breakpoints in the minimum temperature series mainly during 1897-1927 and 2 breakpoints in the maximum temperature series in February 1919 and January 1932. Annual mean temperatures are calculated as the mean of the adjusted minimum and maximum temperatures and the series is much better related with the consistency references and resulted in a trend of climate warming close to the average trend of North China, which verified the homogenization in the adjusted Tianjin temperature series.
[1]王绍武. 近百年我国及全球气温变化趋势[J]. 气象, 1990, 16(2): 11-15.
[2]王绍武, 叶瑾琳, 龚道溢, 等. 近百年中国年气温序列的建立[J]. 应用气象学报, 1998, 9(4): 392-401.
[3]唐国利, 林学椿. 1921-1990年我国气温序列及变化趋势[J]. 气象, 1992, 18(7): 3-6.
[4]林学椿, 于淑秋, 唐国利. 中国近百年温度序列[J]. 大气科学, 1995, 19(5): 525-534.
[5]杜予罡, 唐国利, 王元. 近100年中国地表平均气温变化的误差分析[J]. 高原气象, 2012, 31(2): 456-462.
[6]王澄海, 李健, 许晓光. 中国近50年气温变化准3年周期的普遍性及气温未来的可能变化趋势[J]. 高原气象, 2012, 31(1): 126-136.
[7]赵传成, 王雁, 丁永建, 等. 西北地区近50 年气温及降水的时空变化[J]. 高原气象, 2011, 30(2): 385-390.
[8]张世轩, 张璐, 孙树鹏, 等. 全球变暖情况下中国季节的变化[j]. 高原气象, 2011, 30(3): 659-667.
[9]李艳春, 李艳芳. 宁夏近百年来的气候变化及突变分析[J]. 高原气象, 2001, 20(1): 100-104.
[10]唐国利, 任国玉. 近百年中国地表气温变化趋势的再分析[J]. 气候与环境研究, 2005, 10(4): 791-798.
[11]唐国利, 丁一汇. 由最高最低气温求算的平均气温对我国年平均气温序列影响[J]. 应用气象学报, 2007, 18(2): 187-192.
[12]Potter K W. Illustration of a new test for detecting a shift in mean precipitation series[J]. Mon Wea Rev, 1981, 109: 2040-2045.
[13]Easterling D R, Peterson T C. A new method for detecting undocumented discontinuities in climatological time series[J]. Int J Climatol, 1995, 15: 369-377.
[14]宋超辉, 刘小宁, 李集明. 气温序列非均一性检验方法的研究[J]. 应用气象学报, 1995, 6(3): 289-296.
[15]田红, 江双五, 鲁俊. 江淮流域年降水量和温度的均一性检验[J]. 气象科学, 2008, 28(2): 227-231.
[16]崔宜少, 李建华, 丛美环, 等. 威海气象站年平均气温等气象要素资料的非均一性检验[J]. 应用气象学报, 2006, 17(4): 511-512.
[17]李庆祥, 刘小宁, 张洪, 等. 定点观测气候序列的均一性研究[J]. 气象科技, 2003, 31(1): 3-10.
[18]Alexandersson H. A homogeneity test applied to precipitation data[J]. J Climatol, 1986, 6: 661-675.
[19]Alexandersson H, Moberg A. Homogenization of Swedish temperature data part I: Homogeneity test for linear trends[J]. Int J Climatol, 1997, 17: 25-34.
[20]Gonzalez-Rouco J F, Jimenez J L, Quesada V, et al. Quality control and homogeneity of precipitation data in the southwest of europe[J]. J Climate, 2001, 14: 964-978.
[21]Li Q X, Liu X N, Zhang H Z, et al, Detecting and adjusting temporal inhomogeneity in Chinese mean surface air temperature data[J]. Adv Atmos Sci, 2004, 21(2): 260-268.
[22]黄嘉佑, 李庆祥. 一种诊断序列非均一性的新方法[J]. 高原气象, 2007, 26(1): 62-66.
[23]吴必文, 温华洋, 惠军. 一种新的基于(分布气温序列非均一性检验方法[J]. 合肥工业大学学报: 自然科学版, 2008, 31(9): 1521-1524.
[24]Wang X L. Accounting for autocorrelation in detecting mean-shifts in climate data series using the penalized maximal t or F test[J]. J Appl Meteor Climatol, 2008, 47: 2423-2444.
[25]Wang X L. Penalized maximal F-test for detecting undocumented mean-shifts without trend-change[J]. J Atmos Ocean Technd, 2008, 25(3): 368-384, doi: 10.1175/2007/JTECHA982.1.
[26]Wang X L, Wen Q H, Wu Y. Penalized maximal t test for detecting undocumented mean change in climate data series[J]. J Appl Meteor Climatol, 2007, 46(6): 916-931, doi: 10.1175/JAM2504.1
[27]Wang X L, Chen H, Wu Y, et al. New techniques for the detection and adjustment of shifts in daily precipitation data series[J]. J Appl Meteor Climatol, 2010, 49: 2416-2436.
[28]任国玉, 周薇. 辽东半岛本世纪气温变化的初步研究[J]. 气象学报, 1994, 52(4): 493-498.
[29]Wang X L. Comments on "detection of undocumented change points: A revision of the two-phase regression model"[J]. J Climate, 2003, 16: 3383-3385.
[30]Wang X L. Penalized maximal F test for detecting undocumented mean shift without trend change[J]. J Atmos Ocean Technol, 2008, 25: 368-384.
[31]《第二次气候变化国家评估报告》编写委员会. 第二次气候变化国家评估报告[M]. 北京: 科学出版社, 2011: 38.
[32]王绍武, 叶瑾琳, 龚道溢, 等. 近百年中国年气温序列的建立[J]. 应用气象学报, 1998, 19(4): 392-401.
