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Indo-Pacific Hydroclimate in Response to Changes of the Intertropical Convergence Zone: Discrepancy on Precession and Obliquity Bands Over the Last 410 kyr
Zhang, Peng1; Xu, Jian1; Holbourn, Ann2; Kuhnt, Wolfgang2; Beil, Sebastian2; Li, Tiegang3; Xiong, Zhifang3; Dang, Haowen4; Yan, Hong5; Pei, Renjie2; Ran, Yazhou1; Wu, Hanning1
Corresponding AuthorXu, Jian(jx08@live.cn)
2020-07-27
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
Volume125Issue:14Pages:10
AbstractThe Intertropical Convergence Zone (ITCZ), which is the heaviest rain belt on Earth, significantly influences global hydroclimate change and livelihood of nearly 40% of the global population. However, long-term precipitation records are sparse from the Indo-Pacific region, especially from the southern margin of the Indo-Pacific ITCZ, restricting our understanding of the overall natural variability of the ITCZ in the past. In this study, we present a new summer monsoonal precipitation record that spans the last 410 kyr from the southern margin of the Indo-Pacific ITCZ, based on the logarithmic ratio between terrigenous fraction K and pelagic fraction Ca (ln(K/Ca)). Contents of both elements were derived from X-ray fluorescence scanning on sediment cores from Site U1483 (13 degrees 05.24 ' S, 121 degrees 48.25 ' E, water depth 1,733 m) that was drilled offshore northwestern Australia during International Ocean Discovery Program Expedition 363. Comparison of the new precipitation record with published precipitation records from the northern margin and meteorological center of the Indo-Pacific ITCZ shows that precipitation changed nearly in-phase between the hemispheres on the precession band, possibly linked to expansion and contraction in the latitudinal extent of the Indo-Pacific ITCZ. In contrast, interhemispheric precipitation was nearly in anti-phase on the obliquity band, likely due to latitudinal migration of the Indo-Pacific ITCZ. Our findings imply that tropical hydroclimate cycles were regulated by the orbital forcing but with significantly different response to changes of the ITCZ on precession and obliquity bands.
DOI10.1029/2019JD032125
WOS KeywordEAST-ASIAN MONSOON ; WESTERN EQUATORIAL PACIFIC ; WARM POOL ; MILLENNIAL-SCALE ; VARIABILITY ; CLIMATE ; SUMMER ; RECORD ; AGE ; PRECIPITATION
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41806066] ; National Natural Science Foundation of China[41776060] ; National Natural Science Foundation of China[41830539] ; National Natural Science Foundation of China[41576045] ; National Natural Science Foundation of China[91855211] ; Undergraduate Training Program for Innovation and Entrepreneurship of Northwest University[2020258] ; Institute of Geosciences, Kiel University, Germany
WOS Research AreaMeteorology & Atmospheric Sciences
Funding OrganizationNational Natural Science Foundation of China ; Undergraduate Training Program for Innovation and Entrepreneurship of Northwest University ; Institute of Geosciences, Kiel University, Germany
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000556876500021
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/15138
Collection古环境研究室
Corresponding AuthorXu, Jian
Affiliation1.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian, Peoples R China
2.Univ Kiel, Inst Geosci, Kiel, Germany
3.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao, Peoples R China
4.Tongji Univ, State Key Lab Marine Geol, Shanghai, Peoples R China
5.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Peng,Xu, Jian,Holbourn, Ann,et al. Indo-Pacific Hydroclimate in Response to Changes of the Intertropical Convergence Zone: Discrepancy on Precession and Obliquity Bands Over the Last 410 kyr[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(14):10.
APA Zhang, Peng.,Xu, Jian.,Holbourn, Ann.,Kuhnt, Wolfgang.,Beil, Sebastian.,...&Wu, Hanning.(2020).Indo-Pacific Hydroclimate in Response to Changes of the Intertropical Convergence Zone: Discrepancy on Precession and Obliquity Bands Over the Last 410 kyr.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(14),10.
MLA Zhang, Peng,et al."Indo-Pacific Hydroclimate in Response to Changes of the Intertropical Convergence Zone: Discrepancy on Precession and Obliquity Bands Over the Last 410 kyr".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.14(2020):10.
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