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| DOI | 10.1016/j.palaeo.2020.109641 |
| Latest Neogene monsoon of the Chotanagpur Plateau; eastern India; as revealed by fossil leaf architectural signatures | |
| Hazra T.; Spicer R.A.; Hazra M.; Mahato S.; Spicer T.E.V.; Bera S.; Valdes P.J.; Farnsworth A.; Hughes A.C.; Jian Y.; Khan M.A. | |
| 发表日期 | 2020 |
| ISSN | 0031-0182 |
| 卷号 | 545 |
| 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 (~1 km2) 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 °C ± 2.3 °C; a cold month mean temperature (CMMT) of 16.7 °C ± 3.5 °C and a warm month mean temperature (WMMT) of 26.9 °C ± 2.9 °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. © 2020 |
| 英文关键词 | CLAMP; Environmental variables; Fossil leaves; Jharkhand; Pliocene; Precipitation seasonality |
| 语种 | 英语 |
| scopus关键词 | calibration; fossil record; growing season; hydrological regime; Neogene; paleobotany; paleoecology; Pliocene; potential evapotranspiration; precipitation intensity; proxy climate record; vapor pressure; Bihar; Chotanagpur; India; Jharkhand |
| 来源期刊 | Palaeogeography, Palaeoclimatology, Palaeoecology
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/150560 |
| 作者单位 | Department of Botany, Sidho-Kanho-Birsha University, Ranchi Road, Purulia, 723104, India; CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, 666303, China; School of Environment, Earth and Ecosystem Sciences, The Open University, Milton Keynes, MK7 6AA, United Kingdom; Presidency University, 86/1, College Street, Calcutta University Road, Kolkata, West Bengal 70073, India; Centre of Advanced Study, Department of Botany, University of Calcutta, 35, B.C. Road, Kolkata, 700019, India; School of Geographical Sciences, University of Bristol, Bristol, BS8 1SS, United Kingdom; State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China |
| 推荐引用方式 GB/T 7714 | Hazra T.,Spicer R.A.,Hazra M.,et al. Latest Neogene monsoon of the Chotanagpur Plateau; eastern India; as revealed by fossil leaf architectural signatures[J],2020,545. |
| APA | Hazra T..,Spicer R.A..,Hazra M..,Mahato S..,Spicer T.E.V..,...&Khan M.A..(2020).Latest Neogene monsoon of the Chotanagpur Plateau; eastern India; as revealed by fossil leaf architectural signatures.Palaeogeography, Palaeoclimatology, Palaeoecology,545. |
| MLA | Hazra T.,et al."Latest Neogene monsoon of the Chotanagpur Plateau; eastern India; as revealed by fossil leaf architectural signatures".Palaeogeography, Palaeoclimatology, Palaeoecology 545(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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