DOI: 10.1016/j.earscirev.2021.103503
论文题名: Phanerozoic paleotemperatures: The earth's changing climate during the last 540 million years
作者: Scotese C.R. ; Song H. ; Mills B.J.W. ; van der Meer D.G.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2021
卷: 215 语种: 英语
中文关键词: climate change
; climate history
; End Triassic Extinction
; Future Global Warming
; Hirnantian Ice Age
; hothouse
; ice age
; icehouse
; K/T Extinction
; K/T Impact Winter
; paleoclimate
; paleotemperature
; Permo-Carboniferous Ice Age
; PETM
; Phanerozoic
; Pleistocene Ice Age
; ∂13C
; ∂18O
英文关键词: climate modeling
; climate variation
; extinction
; glaciation
; global change
; large igneous province
; oxygen isotope
; paleoceanography
; paleoclimate
; paleotemperature
; Phanerozoic
; quantitative analysis
; Triassic
英文摘要: This study provides a comprehensive and quantitative estimate of how global temperatures have changed during the last 540 million years. It combines paleotemperature measurements determined from oxygen isotopes with broader insights obtained from the changing distribution of lithologic indicators of climate, such as coals, evaporites, calcretes, reefs, and bauxite deposits. The waxing and waning of the Earth's great polar icecaps have been mapped using the past distribution of tillites, dropstones, and glendonites. The global temperature model presented here includes estimates of global average temperate (GAT), changing tropical temperatures (∆T° tropical), deep ocean temperatures, and polar temperatures. Though similar, in many respects, to the temperature history deduced directly from the study of oxygen isotopes, our model does not predict the extreme high temperatures for the Early Paleozoic required by isotopic investigations. The history of global changes in temperature during the Phanerozoic has been summarized in a “paleotemperature timescale” that subdivides the many past climatic events into 8 major climate modes; each climate mode is made up of 3-4 pairs of warming and cooling episodes (chronotemps). A detailed narrative describes how these past temperature events have been affected by geological processes such as the eruption of Large Igneous Provinces (LIPS) (warming) and bolide impacts (cooling). The paleotemperature model presented here allows for a deeper understanding of the interconnected geologic, tectonic, paleoclimatic, paleoceanographic, and evolutionary events that have shaped our planet, and we make explicit predictions about the Earth's past temperature that can be tested and evaluated. By quantitatively describing the pattern of paleotemperature change through time, we may be able to gain important insights into the history of the Earth System and the fundamental causes of climate change on geological timescales. These insights can help us better understand the problems and challenges that we face as a result of Future Global Warming. © 2021 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166500
Appears in Collections: 气候变化与战略
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作者单位: Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL 60208, United States; State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, United States; School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, United Kingdom; CNOOC International, 945 Bunker Hill Road, Houston, TX 77024, United States
Recommended Citation:
Scotese C.R.,Song H.,Mills B.J.W.,et al. Phanerozoic paleotemperatures: The earth's changing climate during the last 540 million years[J]. Earth Science Reviews,2021-01-01,215