Annual temperature history in Southwest Tibet during the last 400 years recorded by tree rings

Yang, Bao; Kang, Xueyan; Liu, Jingjing; Bräuning, Achim; Qin, Chun

doi:10.1002/joc.1956

Cited by 39 publications

(20 citation statements)

References 42 publications

(60 reference statements)

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“…the Hengduan Mountains (Fan et al, 2008a(Fan et al, , 2010Li et al, 2011a), the Nyainqentanglha Mountains (Zhu et al, 2011a), the Tanggula Mountains (Zhu et al, 2011b;, the Sygera Mountains (Liang et al, 2009), and the Himalaya Mountains (Yang et al, 2009aCook et al, 2003;Hughes, 2001;Yadav et al, 2004). However, few millennial-scale temperature series are available.…”

Section: Published By Copernicus Publications On Behalf Of the Europementioning

confidence: 99%

Millennial minimum temperature variations in the Qilian Mountains, China: evidence from tree rings

et al. 2014

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Abstract.A 1343-year tree-ring chronology was developed from Qilian junipers in the central Qilian Mountains of the northeastern Tibetan Plateau (TP), China. The climatic implications of this chronology were investigated using simple correlation, partial correlation and response function analyses. The chronology was significantly positively correlated with temperature variables prior to and during the growing season, especially with monthly minimum temperature. Minimum temperature anomalies from January to August since AD 670 were then reconstructed based on the treering chronology. The reconstruction explained 58 % of the variance in the instrumental temperature records during the calibration period and captured the variation patterns in minimum temperature at the annual to centennial timescales over the past millennium. The most recent 50 years were the warmest period, while 1690-1880 was the coldest period since AD 670. Comparisons with other temperature series from neighbouring regions and for the Northern Hemisphere as a whole supported the validity of our reconstruction and suggested that it provided a good regional representation of temperature change in the northeastern Tibetan Plateau. The results of wavelet analysis showed the occurrence of significant quasi-periodic patterns at a number of recurring periods (2-4, 40-50, and 90-170 years), which were consistent with those associated with El Niño-Southern Oscillation (ENSO), Pacific Decadal Oscillation (PDO) and solar activity. The comparison between the reconstructed temperature and the index of tropical volcanic radiative forcing indicated that some cold events recorded by tree rings may be due to the impact of tropical volcanic eruptions.

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Section: Published By Copernicus Publications On Behalf Of the Europementioning

confidence: 99%

Millennial minimum temperature variations in the Qilian Mountains, China: evidence from tree rings

et al. 2014

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“…Most of the samples were collected from high elevation (>3400 m) [6][7][8][9][10][11], and with the rich precipitation in this area, most of these studies had reconstructed temperature variation. Only a few of them were related to variations in precipitation or the Palmer Drought Severity Index (PDSI) [12,13] and their samples were usually collected from lower altitudes (<3240 m).…”

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A 457-year reconstruction of precipitation in the southeastern Qinghai-Tibet Plateau, China using tree-ring records

et al. 2013

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This paper presents a 457-year reconstruction of precipitation in the southeastern Qinghai-Tibet Plateau using tree-ring records. Tree-ring samples were collected from the Hengduan Mountains in the southeastern part of the Qinghai-Tibet Plateau, China. A nearly 500-year chronology was developed using tree-ring width records. Correlation analysis shows moisture is the main factor limiting tree growth in this region. Ring-widths were significantly positively correlated with the Palmer Drought Severity Index (PDSI) and precipitation in many months. The highest correlation coefficient was found between the annual growth of trees and precipitation from the previous September to the current June (0.738). Based on this relationship, we reconstructed the precipitation history from 1509 to 2006. The reconstruction explains 54.4% (R 2 adj =53.5%, N=49, F=56.12) of the actual precipitation variation during the calibration period . During the reliable period of the reconstruction (1549-2006), some low-frequency climate signals are included, indicating this region has been getting wetter in the last 20 years. The reconstruction documents six apparently dry and five pluvial periods and the 17th century dry period lasted longer than any other. When compared with other recent studies, this study and these earlier reconstructions show a similar trend in the variation of drought and pluvial. Further spatial correlation analysis confirms that the reconstructed precipitation adequately represents the rainfall history of the entire Hengduan Mountain area. The Multi-taper method, a type of spectral analysis, reveals that precipitation in this area had significant (P<0.01) spectral peaks at 3-5 a, 60 a and 79-85 a.Abies Mill., Hengduan Mountains, precipitation reconstruction, Qinghai-Tibet Plateau, tree-ring width Citation:Gou X H, Yang T, Gao L L, et al. A 457-year reconstruction of precipitation in the southeastern Qinghai-Tibet Plateau, China using tree-ring records.

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“…Many researchers have recently reconstructed the climate history for the area (Fang et al, 2010;Gou et al, 2007;Li et al, 2011Li et al, , 2012Liang et al, 2009;Yang et al, 2010aYang et al, , 2010bYang et al, , 2010cZhang et al, 2003Zhang et al, , 2011Zhu et al, 2008); however, very few studies have focused on the southern TP (Bräuning, 2001;Bräuning and Mantwill, 2004;Fan et al, 2008;Grießinger et al, 2011) because of its remote location. Therefore, an improved tree-ring data set with a dense spatial coverage and long time span is needed for the southern and south-central TP region.…”

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Tree-ring derived millennial precipitation record for the south-central Tibetan Plateau and its possible driving mechanism

Yang

Bräuning

et al. 2012

The Holocene

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Knowledge of Asian monsoon variability remains limited because of sparse instrumental data available only for short time series. Here, an updated tree-ring width record covering the period ad 1037–2009 was developed for the south-central Tibetan Plateau (TP). Correlation analysis revealed a significant relationship ( r = 0.71) between the tree-ring index and annual (previous July to current June) precipitation series for the instrumental period 1963–2008, which accounts for 50.41% of the rainfall variability. Based on a linear regression model, the longest available regional precipitation history was reconstructed. Spatial correlation between tree ring width and annual precipitation data from previous July to current June indicates that the reconstruction is representative of precipitation changes on the south-central TP. Regional wet conditions occurred during ad 1095–1161, 1376–1403, 1414–1446, 1518–1537, 1549–1572, 1702–1757, 1848–1878 and 1891–1913, while dry periods were identified during ad1189–1242, 1256–1314, 1329–1357, 1470–1491, 1573–1623, 1636–1686, 1761–1821, 1823–1847, 1879–1890 and 1931–1985. The negative correlation between our reconstructed precipitation and India monsoon rainfall series indicates the seesaw pattern over northern and southern monsoon Asia. It is suggested that solar radiation-induced sea surface temperature (SST) anomalies over the tropical Pacific influence regional rainfall patterns. The degree of this influence has been stable at the multidecadal scale during the past 1000 years.

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Annual temperature history in Southwest Tibet during the last 400 years recorded by tree rings

Cited by 39 publications

References 42 publications

Millennial minimum temperature variations in the Qilian Mountains, China: evidence from tree rings

Millennial minimum temperature variations in the Qilian Mountains, China: evidence from tree rings

A 457-year reconstruction of precipitation in the southeastern Qinghai-Tibet Plateau, China using tree-ring records

Tree-ring derived millennial precipitation record for the south-central Tibetan Plateau and its possible driving mechanism

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