Zheng Jingyun; Wu Maowei; Ge Quansheng; Hao Zhixin; Zhang Xuezhen
Source Publicationjournalofmeteorologicalresearch
AbstractBased on observations made during recent decades, reconstructed precipitation for the period A. D. 1736-2000, dry-wet index data for A. D. 500-2000, and a 1000-yr control simulation using the Community Earth System Model with fixed pre-industrial external forcing, the decadal variability of summer precipitation over eastern China is studied. Power spectrum analysis shows that the dominant cycles for the decadal variation of summer precipitation are: 22-24 and quasi-70 yr over the North China Plain; 32-36,44-48, and quasi-70 yr in the Jiang-Huai area; and 32-36 and 44-48 yr in the Jiang-Nan area. Bandpass decomposition from observation, reconstruction, and simulation reveals that the variability of summer precipitation over the North China Plain, Jiang-Huai area, and Jiang-Nan area, at scales of 20-35, 35-50, and 50-80 yr, is not consistent across the entire millennium. We also find that the warm (cold) phase of the Pacific Decadal Oscillation generally corresponds to dry (wet) conditions over the North China Plain, but wet (dry) conditions in the Jiang-Nan area, from A. D. 1800, when the PDO became strengthened. However, such a correspondence does not exist throughout the entire last millennium. Data-model comparison suggests that these decadal oscillations and their temporal evolution over eastern China, including the decadal shifts in the spatial pattern of the precipitation anomaly observed in the late 1970s, early 1990s, and early 2000s, might result from internal variability of the climate system.
Funding Project[National Natural Science Foundation of China] ; [Chinese Academy of Sciences] ; [Institute of Geographic Sciences and Natural Resources Research]
Document Type期刊论文
First Author Affilication中国科学院地理科学与资源研究所
Recommended Citation
GB/T 7714
Zheng Jingyun,Wu Maowei,Ge Quansheng,et al. observedreconstructedandsimulateddecadalvariabilityofsummerprecipitationovereasternchina[J]. journalofmeteorologicalresearch,2017,31(1):49.
APA Zheng Jingyun,Wu Maowei,Ge Quansheng,Hao Zhixin,&Zhang Xuezhen.(2017).observedreconstructedandsimulateddecadalvariabilityofsummerprecipitationovereasternchina.journalofmeteorologicalresearch,31(1),49.
MLA Zheng Jingyun,et al."observedreconstructedandsimulateddecadalvariabilityofsummerprecipitationovereasternchina".journalofmeteorologicalresearch 31.1(2017):49.
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