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

Gou, Xiaohua; Yang, Tao; Gao, Linlin; Deng, Yang; Yang, Meixue; Chen, Fahu

doi:10.1007/s11434-012-5539-7

Cited by 39 publications

(12 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the contrary, low average minimum temperature would inhibit the cell activities; thus, a narrow ring would form. Such phenomena also existed in many other tree-ring studies (Fritts 1976;Gou et al 2013;Song et al 2007;Shao and Fan 1999).…”

Section: Resultssupporting

confidence: 65%

Interannual variability of average minimum temperatures derived from tree rings in the mid-Qinling Mountains, China, for the past 138 years

et al. 2016

View full text Add to dashboard Cite

In this study, spruce tree rings from the southern slope of mid-Qinling Mountains were adopted to investigate the characteristics of average minimum temperatures during the past 138 years. Analysis showed that the interannual variability in radial growth of trees was positively correlated with the interannual variability of average minimum temperatures from previous December to current September (VTM ) in the study area during 1955-2010 AD. Based on the correlation analysis, the VTM were reconstructed for 1876-2013 AD with an explained variance of 42.5 % for the calibration period. Among the 22 dramatic changing years, extreme changes occurred more times when it was cooling, while the warming was comparatively gentle. Both the 10-year filtering of VTM series and the frequency of occurrences for those dramatic changing years showed a relatively stationary variation after the early 1950s. Over the last five decades, the accumulated VTM series showed an obvious warming trend, and the increase of the minimum temperature had contributed to the regional warming. The comparison of VTM and the dryness/wetness indices generally reflected cold-wet and warm-dry climate conditions in the study area. Significant positive correlations between the reconstructed VTM and the gridded minimum temperature indicated a regional representative of the temperature reconstruction, and positive correlations between VTM and sea surface temperature (SST) of the Indian Ocean and western Pacific regions suggested a possible linkage between the VTM variations and the Asian summer monsoon. Synchronous fluctuations in three tree-ring study series and connections of VTM with Arctic oscillation (AO) and El Niño-Southern Oscillation (ENSO) activities suggested that the minimum temperature variations in the TTH area responded sensitively to large-scale climate fluctuations and were the results of atmosphere-ocean interactions.

show abstract

Section: Resultssupporting

confidence: 65%

Interannual variability of average minimum temperatures derived from tree rings in the mid-Qinling Mountains, China, for the past 138 years

et al. 2016

View full text Add to dashboard Cite

show abstract

“…To find the strongest climate-growth relationship, we analyzed the response of different tree-ring parameters to multi-month averaged scPDSI (which had the stronger impacts on tree growth than other climatic factors; see the results for details). Finally, we adopted the wavelet coherence method (Grinsted et al, 2004) to test the temporal stability and possible lags of the climate-growth relationship on different frequency domains.…”

Section: Methodsmentioning

confidence: 99%

“…The data covering the period 1868-2005 were obtained from the National Oceanic and Atmospheric Administration and Cooperative Institute for Research in Environmental Sciences 20th Century Reanalysis V2c (NOAA-20C; Compo et al, 2011). The relationship between EASMI and our reconstruction was firstly evaluated using the wavelet coherence method (Grinsted et al, 2004). To explore the connections between precipitation and temperature with scPDSI and EASMI, 21-year moving window correlation analyses were conducted between the decadal-filtered MJJ EASMI, reconstructed scPDSI, local precipitation, and temperature.…”

Section: Methodsmentioning

confidence: 99%

Early summer hydroclimatic signals are captured well by tree-ring earlywood width in the eastern Qinling Mountains, central China

Zhao¹,

Shi²,

Shi³

et al. 2019

Clim. Past

View full text Add to dashboard Cite

Abstract. In the humid and semi-humid regions of China, tree-ring-width (TRW) chronologies offer limited moisture-related climatic information. To gather additional climatic information, it would be interesting to explore the potential of the intra-annul tree-ring-width indices (i.e., the earlywood width, EWW, and latewood width, LWW). To achieve this purpose, TRW, EWW, and LWW were measured from the tree-ring samples of Pinus tabuliformis originating from the semi-humid eastern Qinling Mountains, central China. Standard (STD) and signal-free (SSF) chronologies of all parameters were created using these detrending methods including (1) negative exponential functions combined with linear regression with negative (or zero) slope (NELR), (2) cubic smoothing splines with a 50 % frequency cutoff at 67 % of the series length (SP67), and (3) age-dependent splines with an initial stiffness of 50 years (SPA50). The results showed that EWW chronologies were significantly negatively correlated with temperature but positively correlated with precipitation and soil moisture conditions during the current early-growing season. By contrast, LWW and TRW chronologies had weaker relationships with these climatic factors. The strongest climatic signal was detected for the EWW STD chronology detrended with the NELR method, explaining 50 % of the variance in the May–July self-calibrated Palmer Drought Severity Index (MJJ scPDSI) during the instrumental period 1953–2005. Based on this relationship, the MJJ scPDSI was reconstructed back to 1868 using a linear regression function. The reconstruction was validated by comparison with other hydroclimatic reconstructions and historical document records from adjacent regions. Our results highlight the potential of intra-annual tree-ring indices for reconstructing seasonal hydroclimatic variations in humid and semi-humid regions of China. Furthermore, our reconstruction exhibits a strong in-phase relationship with a newly proposed East Asian summer monsoon index (EASMI) before the 1940s on the decadal and longer timescales, which may be due to the positive response of the local precipitation to EASMI. Nonetheless, the cause for the weakened relationship after the 1940s is complex, and cannot be solely attributed to the changing impacts of precipitation and temperature.

show abstract

“…Additionally, the northern China has shown a drying trend in the instrumental period and prominent drought epoch at the later 1990s, while southwestern China has exhibited a relative wet spell (Figure ) and wetting trend (Figure ) during those periods. To evaluate whether the negative relationship also exists beyond the instrumental period, SPEI reconstruction was compared to a precipitation reconstruction from the negatively correlated area (Gou et al , ). The correlation between the two reconstructions is significantly negative ( r = −0.3.14, p < 0.01) during their common period (1804–2006).…”

Section: Resultsmentioning

confidence: 99%

Tree‐ring recorded drought variability in the northern Min Mountains of northwestern China

Deng

Gou

Gao

et al. 2015

Intl Journal of Climatology

Self Cite

View full text Add to dashboard Cite

Drought is a recurrent natural disaster in northwestern China and it can have a substantial impact on the affected region; therefore, knowledge of drought variability is very important for drought adaptation and mitigation. However, the observed climate data are generally limited in length, which may hamper our understanding the full range of drought variability. Using tree‐ring width measurements of 155 series from 81 Pinus tabulaeformis trees at three sites in the northern Min Mountains of northwestern China, the standardized precipitation evapotranspiration index (SPEI) for May–August from 1804 to 2011 were reconstructed, which account for 64.8% of the variance in the instrumental record over 1954–2011. The new reconstruction is generally consistent with other moisture reconstructions nearby. Two notable features of the SPEI reconstruction is the severe drought starting in the late 1990s and the gradual drying trend since 1954. These features are also apparent in areas located in the north boundaries of Eastern Asian Summer Monsoon (EASM), which indicates that the study area may be affected by the EASM.

show abstract

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

Cited by 39 publications

References 28 publications

Interannual variability of average minimum temperatures derived from tree rings in the mid-Qinling Mountains, China, for the past 138 years

Interannual variability of average minimum temperatures derived from tree rings in the mid-Qinling Mountains, China, for the past 138 years

Early summer hydroclimatic signals are captured well by tree-ring earlywood width in the eastern Qinling Mountains, central China

Tree‐ring recorded drought variability in the northern Min Mountains of northwestern China

Contact Info

Product

Resources

About