Reconstruction of Last Glacial to early Holocene monsoon variability from relict lake sediments of the Higher Central Himalaya, Uttrakhand, India

Juyal, Navin; Pant, R. K.; Basavaiah, N.; Bhushan, Ravi; Jain, Mayank; Saini, N. K.; Yadava, M. G.; Singhvi, A. K.

doi:10.1016/j.jseaes.2008.07.007

Cited by 118 publications

(55 citation statements)

References 59 publications

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“…Al and Ti are viewed as resistant elements, and an indicator of detrital flux (Juyal et al, 2009). Besides detrital contribution, aluminium may be contributed from scavenging, volcanic dust and aeolian sources in the marine environment (Murray et al, 1993;Murray and Leinen, 1996;Pattan and Shane, 1999).…”

Section: Methodsmentioning

confidence: 99%

“…4), we infer a discordant, diverse climatic response to changes in solar irradiance in the different regions of the globe, more specifically on SWM With respect to the SWM, solar irradiance is expected to regulate (i) evaporation, (ii) extent of low pressure at the Tibetan Plateau, enhancing the land-ocean heat gradient, (iii) position of the Inter-Tropical Convergence Zone (ITCZ), and (iv) glacialinterglacial boundary conditions vis-à-vis the Himalayan albedo (Pant and Kumar, 1997;Beer et al, 2000;Sinha et al, 2007;Juyal et al, 2009). It has been postulated that a pronounced low due to heating of Tibet during high solar insolation deflects westerlies northward, as explained in the swing model of Fang et al (1999), and aids in a northward migration of the ITCZ, together with an enhanced moisture advection into arid and semiarid regions of the Himalayas (Fang et al, 1997;Pant and Kumar, 1997;Bookhagen et al, 2005;Juyal et al, 2009). The available data are, however, not adequate to decipher which of these specific processes influence SWM precipitation in the different climatic zones of India.…”

Section: Solar Irradiance (Sunspots) and Swm Precipitationmentioning

confidence: 99%

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Reconstruction of the variability of the southwest monsoon during the past 3 ka, from the continental margin of the southeastern Arabian Sea

Chauhan

Vogelsang

Basavaiah

et al. 2009

J Quaternary Science

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2010. Reconstruction of the variability of the southwest monsoon during the past 3 ka, from the continental margin of the southeastern Arabian Sea.ABSTRACT: From temporal variation in d 18 O in Globigerinoides ruber and G. sacculifer and geochemical indices of weathering/erosion (chemical index of alteration, Al and Ti), we infer rapid southwest monsoon (SWM) deterioration with dwindling fluvial and detrital fluxes at ca. 450-650, 1000 and 1800-2200 cal. a BP during the late Holocene. We have evaluated the role of solar influx (reconstructed) and high-latitude climate variability (archived in GRIP and GISP-2 cores) on SWM precipitation. Broadly, our d 18 O climate reconstruction is concordant with GRIP and GISP-2, and supports a teleconnection through atmospheric connection between the SWM and the North Atlantic climate -albeit temporal extents of the Little Ice Age and Medieval Warm Period from high latitude are not entirely coeval. Moreover, there is a humid climate and enhanced precipitation during the terminal stages of the Little Ice Age. The medieval warming (ca. AD 800-1300) is not synchronous either, and is punctuated by an arid event centred at 1000 a BP. Although the delineation of the specific influence of solar influx on SWM precipitation is elusive, we surmise that SWM precipitation is a complex phenomenon and local orography along southwestern India may have a role on the entrapment of moisture from the southwest trade winds, when these hit land.

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Section: Methodsmentioning

confidence: 99%

Section: Solar Irradiance (Sunspots) and Swm Precipitationmentioning

confidence: 99%

Reconstruction of the variability of the southwest monsoon during the past 3 ka, from the continental margin of the southeastern Arabian Sea

Chauhan

Vogelsang

Basavaiah

et al. 2009

J Quaternary Science

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“…Although various archive-proxy based palaeoclimatic researches through Pleistocene-Holocene transition are available from the Indian Himalaya [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] but the poorly dated profiles obstructs their being most ideal high resolution records except for the Tsokar and Tso Moriri multi-proxy high resolution studies [39][40][41] respectively. Further, precisely dated stalagmite based multi-decadal records are rare through the Late Pleistocene-Holocene transition [42] although δ 18 O precipitation variability during Middle to Late Holocene has been obtained through U/Th dated speleothems [21,22,43,44].…”

Section: Introductionmentioning

confidence: 99%

Stalagmite Inferred High Resolution Climatic Changes through Pleistocene-Holocene Transition in Northwest Indian Himalaya

Kotlia

Singh

Sanwal

et al. 2016

J Earth Sci Clim Change

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Investigated for d 18 O and d 13 C isotopes, mineralogy and growth rate, a 20 cm long and 230Th-dated calcite stalagmite from Kalakot (Jammu and Kashmir Himalaya), has recorded high resolution precipitation variability during the Pleistocene-Holocene transition. At present, the study area is influenced by both the Indian Summer Monsoon (ISM) and Westerlies. The StalAge model indicates that the stalagmite grew between 16.3 ka to 9.5 ka BP under the ideal isotopic equilibrium conditions as revealed by the Hendy test results. The d18 O and d 13 C values range from -5.41 to -8.82% and -7.09 to -10.84% respectively. Although the U/Th chronology is poor due to low Uranium content in the samples resulting in relatively large errors, the first stalagmite inferred precipitation variability reconstructed from NW Indian Himalaya makes this study significant. The near footprints of three global events, e.g., Older Dryas (OD), Allerød period and Younger Drays (YD) can be noticed at ~14.3-13.9, 13.9-12.7 and 12.7-12.2 ka BP. The precipitation strength was weaker during the OD and YD, but was stronger during the Allerød interstadial. By the termination of YD interval, the climate seems fluctuating in the NW Himalaya. There seems variation in commencement, duration and termination of the above mentioned events in different parts of the globe due to latitude location and response time.

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“…The circulation of the North Atlantic Ocean probably plays an important role in triggering as well as amplifying rapid climatic changes in the historical and recent geological records (Jones et al 1998). The centennial-scale abrupt change in the monsoon variability has been attributed to the result of albedo changes in the Himalaya and the Tibetan Plateau (Juyal et al 2008). Nearly all the ice sheets were at their LGM positions from 26.5 to 19 to 20 ka in response to decrease in northern summer insolation, tropical pacific sea surface temperature, and atmospheric CO 2 .…”

Section: Causes For Past Climatic Changesmentioning

confidence: 99%

Is the recessional pattern of Himalayan glaciers suggestive of anthropogenically induced global warming?

et al. 2010

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Following the Intergovernmental Panel on Climate Change report of 2001, a hype regarding the future of Himalayan glaciers, flooding of Indo-Gangetic plains and coastal areas and drying of glacially fed rivers has been created. However, the recent studies of some of the Himalayan glaciers indicate that the rate of recession of most of the glaciers in general is on decline. These observations are in contradiction to the widely popularized concept of anthropogenically induced global warming. It is believed that the rise of temperature of around 0.6°C since mid-nineteenth century is a part of decadal to centennial-scale climatic fluctuations that have been taking place on this Earth for the past few thousands of years.

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Reconstruction of Last Glacial to early Holocene monsoon variability from relict lake sediments of the Higher Central Himalaya, Uttrakhand, India

Cited by 118 publications

References 59 publications

Reconstruction of the variability of the southwest monsoon during the past 3 ka, from the continental margin of the southeastern Arabian Sea

Reconstruction of the variability of the southwest monsoon during the past 3 ka, from the continental margin of the southeastern Arabian Sea

Stalagmite Inferred High Resolution Climatic Changes through Pleistocene-Holocene Transition in Northwest Indian Himalaya

Is the recessional pattern of Himalayan glaciers suggestive of anthropogenically induced global warming?

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