Tree-ring-based reconstruction of the April to September mean temperature since 1826 AD for north-central Shaanxi Province, China |
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| Authors: | QiuFang Cai Yu Liu HuiMing Song and JunYan Sun |
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| Institution: | (1) The State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710075, China;(2) School of Human Settlements and Civil Engineering of Xi’an Jiaotong University, Xi’an, 710049, China |
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| Abstract: | Long-time series of high-resolution temperature record from Chinese Loess Plateau is rare. An April-September mean temperature reconstruction (1826-2004) has been developed for the north-central Shaanxi Province, China, based on tree-ring width analysis. The reconstruction captures 39.3% (p<0.001) of the variance in the instrumental data over the calibration period from 1951 to 2002. The reconstruction shows a high temperature period of 1928-1933, which coincides with the timing of the extreme drought event in 1920s in the entire northern China. The two low temperature periods in reconstruction are 1883-1888 and 1938-1942. With the global warming, the April-September mean temperature in study area has also increased since the 1970s, but has not exceeded the temperature in 1928-1933. Besides the statistical analysis, the reconstruction is also verified by the local dryness/wetness index and other dendroclimatological results. |
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| Keywords: | Huanglong Mountain Shaanxi Pinus tabulaeformis tree-ring width April-September mean temperature |
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