IB-CAS  > 系统与进化植物学国家重点实验室
Latest Neogene monsoon of the Chotanagpur Plateau, eastern India, as revealed by fossil leaf architectural signatures
Hazra, Taposhi; Spicer, Robert A.; Hazra, Manoshi3; Mahato, Sumana; Spicer, Teresa E. V.; Bera, Subir4; Valdes, Paul J.; Farnsworth, Alexander5; Hughes, Alice C.; Jian, Yang6; Khan, Mahasin Ali
2020
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
Volume545
AbstractA 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.
KeywordFossil leaves CLAMP Pliocene Environmental variables Precipitation seasonality Jharkhand
Subject AreaGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
DOI10.1016/j.palaeo.2020.109641
Indexed BySCI
Language英语
WOS KeywordSOUTH ASIAN MONSOON ; MAHUADANR VALLEY ; LATEHAR DISTRICT ; CHINA EVIDENCE ; CLIMATE ; SEDIMENTS ; SIWALIK ; FLORA ; PALEOCLIMATE ; JHARKHAND
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS IDWOS:000526825900014
PublisherELSEVIER
SubtypeArticle
Publication PlaceAMSTERDAM
EISSN1872-616X
Funding OrganizationNERC/NSFC BETR Project [NE/P013805/1]
Corresponding Author Emailmahasin-ali-khan@skbu.ac.in
Citation statistics
Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ibcas.ac.cn/handle/2S10CLM1/21799
Collection系统与进化植物学国家重点实验室
Affiliation1.Sidho Kanho Birsha Univ, Dept Bot, Ranchi Rd, Purulia 723104, India
2.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
3.Spicer, Robert A.] Open Univ, Sch Environm Earth & Ecosyst Sci, Milton Keynes MK7 6AA, Bucks, England
4.Presidency Univ, 86-1 Coll St,Calcutta Univ Rd, Kolkata 70073, West Bengal, India
5.Univ Calcutta, Dept Bot, Ctr Adv Study, 35 BC Rd, Kolkata 700019, India
6.Univ Bristol, Sch Geog Sci, Bristol BS8 1SS, Avon, England
7.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
Recommended Citation
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).
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