Latest Neogene monsoon of the Chotanagpur Plateau, eastern India, as revealed by fossil leaf architectural signatures

doi:10.1016/j.palaeo.2020.109641

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	Latest Neogene monsoon of the Chotanagpur Plateau, eastern India, as revealed by fossil leaf architectural signatures
	Hazra, Taposhi ; Spicer, Robert A.; Hazra, Manoshi 4; Mahato, Sumana ; Spicer, Teresa E. V.; Bera, Subir 5; Valdes, Paul J.; Farnsworth, Alexander 6; Hughes, Alice C.; Jian, Yang 7
刊名	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
	2020
卷号	545
关键词	Fossil leaves CLAMP Pliocene Environmental variables Precipitation seasonality Jharkhand
ISSN号	0031-0182
DOI	10.1016/j.palaeo.2020.109641
文献子类	Article
英文摘要	A fossil leaf assemblage from latest Neogene (Pliocene) sediments exposed in Jharkhand of Chotonagpur Plateau, eastern India, is subjected to a CLAMP (Climate Leaf Analysis Multivariate Program) analysis using a new high spatial resolution (similar to 1 km(2)) WorldClim2 gridded climate data and PhysgAsia2 calibration. The CLAMP analysis of 80 different morphotypes of fossil leaves indicates a mean annual temperature (MAT) of 21.9 degrees C +/- 2.3 degrees C; a cold month mean temperature (CMMT) of 16.7 degrees C +/- 3.5 degrees C and a warm month mean temperature (WMMT) of 26.9 degrees C +/- 2.9 degrees C. Precipitation estimates have high uncertainties but suggest a weak monsoon with a growing season (11.7 +/- 1 months) precipitation (GSP) of 201.2 +/- 64.3 cm. The new calibration also provides for the first time in India more detailed insights into the hydrological regime through the return of annual and seasonal vapour pressure deficit (VPD) and potential evapotranspiration (PET) estimates, as well as new thermal overviews through measures of thermicity and growing degree days. The new results confirm the overall warmth of the region. Although rainfall estimates have large uncertainties due to year-round wet soils, measures of VPD and PET show persistent high humidity, but with higher evaporative stress in the summer during late Neogene times than now.
学科主题	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
电子版国际标准刊号	1872-616X
出版地	AMSTERDAM
WOS关键词	SOUTH ASIAN MONSOON ; MAHUADANR VALLEY ; LATEHAR DISTRICT ; CHINA EVIDENCE ; CLIMATE ; SEDIMENTS ; SIWALIK ; FLORA ; PALEOCLIMATE ; JHARKHAND
WOS研究方向	Physical Geography ; Geology ; Paleontology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000526825900014
资助机构	NERC/NSFC BETR Project [NE/P013805/1]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/21799]
专题	系统与进化植物学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 2.Sidho Kanho Birsha Univ, Dept Bot, Ranchi Rd, Purulia 723104, India 3.Spicer, Robert A.; Spicer, Teresa E. V.; Hughes, Alice C.] Chinese Acad Sci, Xishuangbanna Trop Bot Garden, CAS Key Lab Trop Forest Ecol, Mengla 666303, Peoples R China 4.Spicer, Robert A.] Open Univ, Sch Environm Earth & Ecosyst Sci, Milton Keynes MK7 6AA, Bucks, England 5.Presidency Univ, 86-1 Coll St,Calcutta Univ Rd, Kolkata 70073, West Bengal, India 6.Univ Calcutta, Dept Bot, Ctr Adv Study, 35 BC Rd, Kolkata 700019, India 7.Univ Bristol, Sch Geog Sci, Bristol BS8 1SS, Avon, England
推荐引用方式 GB/T 7714	Hazra, Taposhi,Spicer, Robert A.,Hazra, Manoshi,et al. Latest Neogene monsoon of the Chotanagpur Plateau, eastern India, as revealed by fossil leaf architectural signatures[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,545.
APA	Hazra, Taposhi.,Spicer, Robert A..,Hazra, Manoshi.,Mahato, Sumana.,Spicer, Teresa E. V..,...&Khan, Mahasin Ali.(2020).Latest Neogene monsoon of the Chotanagpur Plateau, eastern India, as revealed by fossil leaf architectural signatures.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,545.
MLA	Hazra, Taposhi,et al."Latest Neogene monsoon of the Chotanagpur Plateau, eastern India, as revealed by fossil leaf architectural signatures".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 545(2020).