A global-scale test for monsoon indices used in palaeoclimatic reconstruction
Jacques, Frederic M. B.1; Su, Tao1,3; Huang, Yong-Jiang2,3; Wang, Li1,3; Zhou, Zhe-Kun1,2
2013-12-01
发表期刊PALAEOWORLD
ISSN1871-174X
卷号22期号:3-4页码:93-100
摘要The monsoon has received broad attention because of its economic and ecological importance. Many studies based on isotopic, palaeomagnetic, sedimentological, palaeobotanical or palaeontological proxy data have addressed the Neogene evolution of the Asian monsoon. Quantitative estimations of monsoon intensity in geological history are needed to study its evolution. Good tools are also needed to discriminate between past monsoonal or non-monsoonal climates. Several indices have been proposed to describe the seasonality in precipitation or monsoon strength based mainly on precipitation parameters. However, these indices have never been tested nor validated on a global scale. Herein, we look at four indices used in recent studies. The values of these indices are calculated for the present condition on a global scale using a geographical information system. We found that all four indices reconstruct false positive scenarios, i.e., non-monsoonal regions (either high latitudes or equatorial regions) with high index values. And some indices fail to give high values for some monsoonal regions like India. These indices cannot be used to discriminate between monsoonal and non-monsoonal climates through geological time. However, they can be used when the presence of the monsoon is confirmed by other means, and in such cases they are useful for measuring monsoon intensity. The monsoonal precipitation is characterized by its amount, annual range, and seasonal distribution but these three aspects of the monsoon are not sufficiently summarized in one index value. Parameters useful for palaeomonsoon description, such as the ratio of summer precipitation and the daily rate of summer precipitation, should be directly included in methods of palaeoclimatic reconstruction. (C) 2013 Published by Elsevier B.V. on behalf of Nanjing Institute of Geology and Palaeontology, CAS.
关键词Monsoon Index Climate Geographical Information System Palaeoclimatic Reconstruction
资助信息973 Programme of MoST of China [20120CB821900]; National Natural Science Foundation of China [41272007, 31100166, 41030212]; Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences [KLBB 201201]; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) [123106, 123107, 123108]; 973 Programme of MoST of China(20120CB821900); National Natural Science Foundation of China(41272007; Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences(KLBB 201201); State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)(123106; 31100166; 123107; 41030212); 123108)
DOI10.1016/j.palwor.2013.02.002
收录类别SCI
语种英语
WOS研究方向Paleontology
WOS类目Paleontology
WOS记录号WOS:000328710300004
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/17514
专题中国科学院东亚植物多样性与生物地理学重点实验室
作者单位1.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla 666303, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650204, Peoples R China
3.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, State Key Lab Paleobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
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Jacques, Frederic M. B.,Su, Tao,Huang, Yong-Jiang,et al. A global-scale test for monsoon indices used in palaeoclimatic reconstruction[J]. PALAEOWORLD,2013,22(3-4):93-100.
APA Jacques, Frederic M. B.,Su, Tao,Huang, Yong-Jiang,Wang, Li,&Zhou, Zhe-Kun.(2013).A global-scale test for monsoon indices used in palaeoclimatic reconstruction.PALAEOWORLD,22(3-4),93-100.
MLA Jacques, Frederic M. B.,et al."A global-scale test for monsoon indices used in palaeoclimatic reconstruction".PALAEOWORLD 22.3-4(2013):93-100.
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