Reconstructed temperature for Yong'an, Fujian, Southeast China: Linkages to the Pacific Ocean climate variability

摘要

Variations in ring width of Pinus massoniana were used to develop high-resolution climate proxy data to extend the existing climate record in Yong'an, Fujian Province, Southeast China. Growth-climate response analyses showed that the total ring width (TRW) in the subtropical zone of Fujian Province is mainly influenced by summer-autumn temperature variability. Based on the total ring width chronology derived from one chronology site (LBY), we developed July-October minimum temperature reconstruction for the period A.D. 1803-2008. The climate/tree-growth model accounts for 42.2% of the instrumental temperature variance during the period 1954-2008. Warm periods occurred during 1808-1815, 1833-1853, 1862-1871, 1895-1906, 1914-1927 and 1973-present; while the periods of 1803-1807, 1816-1832, 1854-1861, 1872-1894, 1907-1913 and 1928-1972 were relatively cold. There is a reasonable agreement with the cold and warcum periods previously estimated from tree-rings around Western Pacific Ocean. The climate correlation analyses with summer APO and gridded climate dataset revealed that our season temperature reconstruction contains the strong climate signals for Asian-Pacific.