摘要
在没有可靠参考序列的前提下,利用RHtestsV3软件包对天津1891 1950年逐日最高和最低气温序列的非均一性进行了检验和订正,并通过分析判别订正后序列与"多地点"、"多来源"参证序列的一致性,检验订正的合理性。结果表明,日最低气温序列有6个断点,主要出现在1897 1927年之间;日最高气温序列有2个断点,出现在1919年2月和1932年1月。用订正后的天津日最高和最低气温计算的日平均气温序列,与参证序列的相关性明显提高,变化趋势也接近于华北区域的平均状况,表明其具有较好的均一性。
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 to1950 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.
出处
《高原气象》
CSCD
北大核心
2014年第3期855-860,共6页
Plateau Meteorology
基金
公益性行业(气象)科研专项(GYHY201206012)
关键词
气温序列
均一性
订正
天津
Temperature series
Homogenization
Adjustment
Tianjin
