scholarly journals Tree ring based precipitation reconstruction in the south slope of the middle Qilian Mountains, northeastern Tibetan Plateau, over the last millennium

2012 ◽  
Vol 117 (D8) ◽  
pp. n/a-n/a ◽  
Author(s):  
Junyan Sun ◽  
Yu Liu
Keyword(s):  
Tibetan Plateau ◽  
Tree Ring ◽  
Qilian Mountains ◽  
Last Millennium ◽  
The South ◽  
Precipitation Reconstruction ◽  
Northeastern Tibetan Plateau ◽  
South Slope

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

2014 ◽  
Vol 10 (5) ◽  
pp. 1763-1778 ◽  
Author(s):  
Y. Zhang ◽  
X. M. Shao ◽  
Z.-Y. Yin ◽  
Y. Wang
Keyword(s):  
Tibetan Plateau ◽  
Tree Ring ◽  
Tree Rings ◽  
Minimum Temperature ◽  
Volcanic Eruptions ◽  
Qilian Mountains ◽  
Tree Ring Chronology ◽  
Northeastern Tibetan Plateau ◽  
Reconstructed Temperature ◽  
The Impact

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 tree-ring chronology. The reconstruction explained 58% of the variance in the instrumental temperature records during the calibration period (1960–2012) 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.

scholarly journals A Tree-Ring-Based Precipitation Reconstruction since 1760 CE from Northeastern Tibetan Plateau, China

Atmosphere ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 416
Author(s):  
Youping Chen ◽  
Feng Chen ◽  
Heli Zhang
Keyword(s):  
Tibetan Plateau ◽  
Tree Ring ◽  
Yellow River ◽  
Regional Scale ◽  
Ring Width ◽  
Yellow River Basin ◽  
The Tibetan Plateau ◽  
Precipitation Reconstruction ◽  
Picea Crassifolia ◽  
Northeastern Tibetan Plateau

Hydroclimatic conditions and related water resources change in the Tibetan Plateau is one of the main concerns for future sustainable development in China. This study presents a 254-year precipitation reconstruction from August of the previous year to June of the current year for the northeastern Tibetan Plateau based on tree-ring width data of tree-ring cores of Picea crassifolia from three sampling sites. The precipitation reconstruction explained 51.4% of the variance in instrumental precipitation during the calibration period 1958–2013. Dry periods with precipitation below the 254-year average value occurred during 1848–1865, 1873–1887, 1898–1923, and 1989–2003, and wet periods (precipitation above the mean) occurred during 1769–1785, 1798–1833, 1924–1938, 1957–1968, and 2004–2013. Spatial correlation analyses with the precipitation gridded dataset showed that our reconstruction contains some strong regional-scale precipitation signals for the upper Yellow River Basin. Our precipitation reconstruction also agreed in general with other dendroclimatic precipitation reconstructions from surrounding regions. In addition, reconstructed precipitation changes were consistent with the streamflow variation of the Yellow River.

scholarly journals A 406-year non-growing-season precipitation reconstruction in the southeastern Tibetan Plateau

2021 ◽  
Vol 17 (6) ◽  
pp. 2381-2392
Author(s):  
Maierdang Keyimu ◽  
Zongshan Li ◽  
Bojie Fu ◽  
Guohua Liu ◽  
Fanjiang Zeng ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Tree Ring ◽  
Tree Growth ◽  
Ring Width ◽  
Growing Season ◽  
Climatic Conditions ◽  
Forest Growth ◽  
Drought Severity ◽  
Precipitation Reconstruction ◽  
Southeastern Tibetan Plateau

Abstract. Trees record climatic conditions during their growth, and tree rings serve as proxy to reveal the features of the historical climate of a region. In this study, we collected tree-ring cores of hemlock forest (Tsuga forrestii) from the northwestern Yunnan area of the southeastern Tibetan Plateau (SETP) and created a residual tree-ring width (TRW) chronology. An analysis of the relationship between tree growth and climate revealed that precipitation during the non-growing season (NGS) (from November of the previous year to February of the current year) was the most important constraining factor on the radial tree growth of hemlock forests in this region. In addition, the influence of NGS precipitation on radial tree growth was relatively uniform over time (1956–2005). Accordingly, we reconstructed the NGS precipitation over the period spanning from 1600–2005. The reconstruction accounted for 28.5 % of the actual variance during the common period of 1956–2005. Based on the reconstruction, NGS was extremely dry during the years 1656, 1694, 1703, 1736, 1897, 1907, 1943, 1982 and 1999. In contrast, the NGS was extremely wet during the years 1627, 1638, 1654, 1832, 1834–1835 and 1992. Similar variations of the NGS precipitation reconstruction series and Palmer Drought Severity Index (PDSI) reconstructions of early growing season from surrounding regions indicated the reliability of the present reconstruction. A comparison of the reconstruction with Climate Research Unit (CRU) gridded data revealed that our reconstruction was representative of the NGS precipitation variability of a large region in the SETP. Our study provides the first historical NGS precipitation reconstruction in the SETP which enriches the understanding of the long-term climate variability of this region. The NGS precipitation showed slightly increasing trend during the last decade which might accelerate regional hemlock forest growth.

scholarly journals A 3,500-year tree-ring record of annual precipitation on the northeastern Tibetan Plateau

2014 ◽  
Vol 111 (8) ◽  
pp. 2903-2908 ◽  
Author(s):  
B. Yang ◽  
C. Qin ◽  
J. Wang ◽  
M. He ◽  
T. M. Melvin ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Tree Ring ◽  
Annual Precipitation ◽  
Northeastern Tibetan Plateau

Quaternary drainage evolution of the Datong River, Qilian Mountains, northeastern Tibetan Plateau, China

Geomorphology ◽  
2020 ◽  
Vol 353 ◽  
pp. 107021 ◽  
Author(s):  
Zhenhua Ma ◽  
Zhantao Feng ◽  
Tingjiang Peng ◽  
Shanpin Liu ◽  
Meng Li ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Qilian Mountains ◽  
Northeastern Tibetan Plateau
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