NDLI: Decadal-scale precipitation variations in arid and semiarid zones of northern China during the last 500 years

Content Provider	SpringerLink
Author	Wang, Tao Yang, Bao Braeuning, A. Xia, Dunsheng
Copyright Year	2004
Abstract	Regional decadal precipitation reconstructions for the arid and semi-arid zones of northern China were established by the use of different palaeoclimate archives such as ice-cores, tree-rings, lake sediments and written historical documents. Local rainfall reconstructions from single sites were averaged to obtain regional precipitation records for western and eastern regions of an arid and semiarid zone of northern China, respectively. All established regional precipitation curves display 5 dry periods, each lasting about 50 years. Meanwhile, precipitation reconstructions show regional dissimilarities. During the last 500 years, the trends of precipitation change in the eastern arid region are basically consistent with those in the western and eastern regions of the semiarid zone. Precipitation variations in the western arid region are unique, showing significant local patterns of rainfall variability. Maximum entropy method (MEM) spectral estimates show that each regional precipitation series contains stationary century-scale periodicities of about 120 a. Singular spectrum analysis was applied to isolating the century-scale oscillation signals from the regional proxy precipitation series. Significant periods with wavelengths of 121.4a, 154.6a, 124.3a, 118.6a, 108.5a and 121.4a were found 26.56%, 26.44%, 28.87%, 18.67%, 33.48% and 34.04% of the variances of the original series for the western arid zone, the eastern arid zone, the whole arid zone, the western semiarid zone, the eastern semiarid zone and whole northern China, respectively.
Starting Page	842
Ending Page	848
Page Count	7
File Format	PDF
ISSN	10016538
Journal	Chinese Science Bulletin
Volume Number	49
Issue Number	8
e-ISSN	18619541
Language	English
Publisher	Science in China Press
Publisher Date	2004-01-01
Publisher Place	Beijing
Access Restriction	Subscribed
Subject Keyword	last 500 years arid and semiarid zones ice-cores tree-rings historical documents precipitation variation Life Sciences Physics Chemistry/Food Science Science Geosciences Engineering
Content Type	Text
Resource Type	Article

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