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《Journal of Glaciolgy and Geocryology》 2002-01
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Comparison of the Winter Temperature in the Yangtze Delta in the Last 1000 a with the Record in Guliya Ice Core

CHEN Jia-qi 1, SHI Ya-feng 1,2(1. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing Jiangsu 210008, China; 2. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou  
With the help of abundant historical documents in the Yangtze Delta, winter temperature starting from 820's AC has been reconstructed. In order to calibrate the effect of the record in Guliya ice core, a comparison of the winter temperature with the record has been established. The result shows that it was a close temporal and spatial relation before the 13 th century considering cold and warm variations. After the 13 th century, it is difficult to find a correlation. During the last 1000 a, a cold trend is clear in the Yangtze Delta, but a warm trend could be found in the record in Guliya ice core. This trend is resulted from the warm phase during the middle centuries (7 th and 8 th century) both in the Yangtze Delta and the whole China; however, the warm phase could not be seen in the record in Guliya ice core or in the Tibetan Plateau. During the Little Ice Age, 3 typical periods can be found both in Guliya and in the Yangtze Delta. The first phase of the Little Ice Age started earlier and concluded later in the Yangtze Delta than that in Guliya. As the decadal variation, nearly half of the peaks show a simultaneous change in both sites, but the changing amplitude is different. The composition of warm-cold also shows a similarity. Although there is a distance of several thousand kilometers for the two sites, the same decadal climatic response can still be found in the records of temperature and precipitation. Sun activities and volcanic eruptions dominate the regional climate change in both sites.
【Fund】: 中国科学院“九五”重大项目 (KZ95 1 A1 2 0 2 0 4)资助
【CateGory Index】: P343.6
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