Tree-ring-based hydrological records for western Himalaya, India, since a.d. 1560

Singh, Jayendra; Park, Won-Kyu; Yadav, Ram R.

doi:10.1007/s00382-005-0089-1

Cited by 88 publications

(45 citation statements)

References 31 publications

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“…However, the PDSI value in our results is higher, indicating that the spring PDSI values vary in the Hengduan Mountains due to the complex topography since the general climatic conditions are strongly modified by the topography (Bräuning, 1999). The wet period from the 1780s to the 1800s was also reported in Vietnam, Thailand, and Myanmar (Singh et al, 2006;D'Arrigo et al, 2011). Moreover, the 1930s-1950s were characterized by the longest and wettest humid period during the past 361 years in our study, and similar results were discovered from tree-ring-based hydrological regime reconstruction in northern Vietnam, Thailand, western India, Daocheng (Sichuan), Baima Snow Mountain (Yunnan), and Jade Dragon Snow Mountain (Sano et al, 2005(Sano et al, , 2009Buckley et al, 2007;Fan et al, 2008;Guo et al, 2009;Singh et al, 2009;Fang et al, 2010;Yadav, 2011;Gou et al, 2013), and from ice-core-and stalagmite-based reconstruction in the eastern Tibetan Plateau and Hunan Province (Yao et al, 1999;Yin et al, 2010), suggesting that this wet period influenced a large area of southeast Asia.…”

Section: Discussioncontrasting

confidence: 36%

Assessing drought variability since 1650 AD from tree‐rings on the Jade Dragon Snow Mountain, southwest China

Gebrekirstos

et al. 2015

Intl Journal of Climatology

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Southwest China has experienced significant drought during the past few years. To better understand the tendency of drought changes over time, this study applies dendroclimatological techniques to assess drought variations in Lijiang Prefecture, southwest China. So far, the longest chronology (387 years) of Picea likiangensis on the Jade Dragon Snow Mountain was constructed, and the relationships between the tree-ring width and climate variables were analysed. The spring season Palmer Drought Severity Index (PDSI) was reconstructed based on a standard chronology. Tree-ring width is positively related to precipitation and relative humidity from February to March and the PDSI from January to May. Conversely, tree-ring width is also negatively related with mean temperature from January to May, suggesting that growth of P. likiangensis is affected both by temperature and precipitation. The reconstructed PDSI showed that the Jade Dragon Snow Mountain has experienced considerable variations in spring drought conditions during the past 361 years. Four distinct periods were recognized: (1) 1650-1730, a relatively humid period with an average PDSI value above zero; (2) 1730-1860, a period with greatly fluctuating PDSI and intermittent wet periods (1746-1755, 1782-1800, and 1820-1830) and several dry periods (1735-1745, 1756-1780, 1810-1820, and 1830-1860); (3) 1870-1945, a humid period, with the highest PDSI value during 1930-1945; and (4) 1945-2011, a period with decreasing humidity. The results are consistent with hydrological studies in nearby regions and related species, as well as historical records of natural disasters. The recently observed spring drought follows a trend of decreasing humidity over the past 60 years, suggesting that a sound strategy for management and land-use planning is required to secure ecosystem and human well-being.

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Section: Discussioncontrasting

confidence: 36%

Assessing drought variability since 1650 AD from tree‐rings on the Jade Dragon Snow Mountain, southwest China

Gebrekirstos

et al. 2015

Intl Journal of Climatology

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“…The incidence of severe cold in the 1910s-1920s is confirmed by tree-ring records and ice cores from the Tibetan Plateau (Bräuning 2006, Singh et al 2006, Yao et al 2006. The 1930s-1950s period was a relatively prolonged warm period, which was synchronous with a prolonged warm phase in the Himalayan region (Yadav et al 1999, Cook et al 2003 as well as the source region of the Yangtze River (Liang et al 2008) and the western Sichuan Plateau (Li et al 2010).…”

Section: Changes In Reconstructed Summer Minimum Temperatures Over Timementioning

confidence: 90%

Summer mean temperature variation from 1710–2005 inferred from tree-ring data of the Baimang Snow Mountains, northwestern Yunnan, China

Li¹,

Shi²,

Liu³

et al. 2011

Clim. Res.

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The tree-ring chronologies of Abies georgei Orr were developed for 3 sites at different elevations: the southern (2750 m), middle (3050 m), and northern (3400 m) parts of the Baimang Snow Mountains in northwestern Yunnan Province, China. The climate-growth response analysis indicated that trees at different elevations respond differently to environmental changes. The radial growth of trees found at the middle and high elevation sites was determined by temperature variables (mean, maximum, and minimum temperatures), particularly during the summer season (June to August), while moisture availability (precipitation and relative humidity) during spring (in March) was the crucial climate factor for tree growth at the low elevation site. The linear climate-growth model derived from the composite chronology of the 2 high elevation sites was verified with independent data from 1958 to 2005, and accounted for 33.4% of the mean temperature variation during summer (June to August). Based on this model, summer minimum temperature variations were reconstructed for the past 296 yr. The reconstruction revealed that cool climates mainly occurred in 1732-1743, 1758-1780, 1791-1824, 1836-1847, 1853-1862, 1908-1929, 1964-1976, and 1979-1993, while warm climates prevailed in 1718-1731, 1744-1756, 1781-1790, 1825-1835, 1883-1907, 1930-1963, and 1995 to present. Spectral analysis of the reconstruction using the multi-taper method (MTM) indicated the existence of some multidecadal (about 70 yr) and bidecadal (about 20 yr) cycles, which might correspond to the related cycles of solar activity, and significant peaks at about 2 to 8 yr, in agreement with the spectral mode of El Niño Southern Oscillation (ENSO)-type variability. KEY WORDS: Summer temperature · Climate reconstruction · Tree-ring · Northwestern YunnanResale or republication not permitted without written consent of the publisher Clim Res 47: 207-218, 2011 Tree-ring measurements provide a particularly valuable indicator of climatic history as they offer precise dating, extensive spatial availability, and climatologically high sensitivity (Fritts 1976, Schweingruber 1996. Tree-ring data play an important role in reconstructing the climate variability of the Northern Hemisphere and have been integrated worldwide into research on global change (Esper et al. 2002, Mann et al. 2008. The coniferous forests in northwestern Yunnan are ancient and diverse (Wu 1987), offering a compelling opportunity to explore tree-ring data, but few dendroclimatological studies have been conducted in this region. The earliest such study in this region was carried out at Haba Snow Mountains, in which Wu et al. (1988) reported a tree-ring chronology indicative of air temperature during the last 400 yr and suggested the existence of similar variations in the Tibetan Plateau. Based on the tree-ring data of the central Hengduan Mountains, variability in summer temperatures and spring droughts during the past several centuries have also been reconstructed (Fan et al. 2008, 2009a, Li et al. 2...

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“…Spring precipitation since 1560 was reconstructed for the western Himalayan region (Singh et al 2006). An unprecedented precipitation increase occurred during the late twentieth century.…”

Section: Tree-ring Recorded Variations Of Precipitationmentioning

confidence: 99%

Asian Monsoon Variability Recorded in Other Archives

Cai

Jin

Zhou

et al. 2014

Late Cenozoic Climate Change in Asia

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This chapter provides an extensive review of paleomonsoon variability on millennial-to decadal time scales in various archives other than loess, including speleothems, lake sediments, peat deposits, desert deposits, marine sediments, corals, ice cores, tree rings, pollen archives and historical documents. Case studies will be presented to introduce the major proxy indexes associated with these archives, and the reconstructed history of Asian monsoon variability. Advances in the study of monsoon variability and the peculiarity of different archives will also be introduced in this chapter.Keywords Speleothems · Lake sediments · Peat · Desert · Marine sediments · Coral · Ice cores · Tree ring · Pollen · Historical documents Overview of Various Paleoclimate ArchivesAs described in the previous chapter, the eolian loess sequence, a unique geological archive in the world, plays an important role in studying the climatic and environmental changes in China as it documents the variability of both Asian monsoon and the aridification of inland Asia. It has the advantages of being relatively continuous and long-lasting for studying the monsoon changes and inland aridifications on tectonic and orbital time scales, and even has the potential for studies of monsoon variations on millennial time scales at some sites. However, other geo-biological archives and historical records are also essential in studying the Asian monsoon changes, as they provide indispensable information for fully understanding Asian monsoon changes and its dynamic forces and environmental effects, especially on the millennial to decadal time scales. For example, taking advantage of high-precision absolute U-series dating, speleothems from karst caves, provide the ages of the abrupt events that occurred within the Asian monsoon regions and make it possible to correlate these events with global climate changes, enhancing greatly our understanding of the linkage between Asian monsoon and global climate change. With multiple proxies, lake sediments are good at providing the integrated information on hydrology, weathering processes, biomass and other aspects within the drainage systems. Coral records may indicate the changes in moisture supply from the tropical ocean, ocean circulation, sea surface temperature and other parameters linked closely with monsoon climate. Tree-ring records provide annual changes of regional temperature, precipitation and the hydrological environment, and are the basis to fully describe the present global warming and the anthropogenic contribution. As the direct index of vegetation, pollen assemblages indicate the succession of vegetation associated with monsoon changes, revealing variations in moisture availability and temperature. Therefore, studies of these various archives, as well as peatbogs, ice cores, marine and desert deposits and historical records, greatly expanded our knowledge of the variability of Asian monsoons and their driving forces.This chapter will focus on various archives used in the study of Asian mon...

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Tree-ring-based hydrological records for western Himalaya, India, since a.d. 1560

Cited by 88 publications

References 31 publications

Assessing drought variability since 1650 AD from tree‐rings on the Jade Dragon Snow Mountain, southwest China

Assessing drought variability since 1650 AD from tree‐rings on the Jade Dragon Snow Mountain, southwest China

Summer mean temperature variation from 1710–2005 inferred from tree-ring data of the Baimang Snow Mountains, northwestern Yunnan, China

Asian Monsoon Variability Recorded in Other Archives

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